[0001]The present disclosure relates to the field of multi cables.
More particularly, the present disclosure relates to the multi optical fiber cable for outdoor applications.
BACKGROUND
[0002] Due to increasing demand of optical fibres for increasing
data capacity and adding more customers in future, there is a need for installing additional cables. Installing new cables along the track of already installed cable is difficult as it needs digging, new duct laying and new cable installation. Also, Intracity access/metro networks may require multiple cables with few cables for long distance data transfer and few cables for accessing or branching at some intervals, this would require multiple ducts to be laid and multiple cables to be installed in series which is a time consuming process.
[0003] In light of the above-mentioned drawbacks, there exists a
need of a cable which overcomes the above-cited drawbacks of conventionally known cable designs.
OBJECT OF THE DISCLOSURE
[0004] A primary object of the present disclosure is to provide a
multi cable for enhanced network capacity.

[0005] Another object of the present disclosure is to provide the
multi cable to reduce cost and time of installation.
[0006] Yet another object of the present disclosure is to provide the
multi cable with high tensile strength and minimum bend radius.
[0007] Yet another object of the present disclosure is to provide the
multi cable which is easy to separate.
[0008] Yet another object of the present disclosure is to provide a
multi cable for outdoor applications.
SUMMARY
[0009] In an aspect, the present disclosure provides a multi cable.
The multi cable is defined by a first longitudinal axis. The multi cable includes a plurality of optical fiber cable units. In addition, the multi cable includes a structural connector. The plurality of optical fiber cable units is associated with a plurality of longitudinal axis. The first longitudinal axis associated with the multi cable and the plurality of longitudinal axis associated with the plurality of optical fiber cable units is substantially parallel. The structural connector keeps the plurality of optical fiber cable units in a predefined physical constrain. Each of the plurality of optical fiber cable units is substantially an outdoor optical fiber cable unit. Each of the plurality of optical fiber cable units includes atleast one strength member lying along the corresponding plurality of longitudinal axis of the plurality of optical fiber cable units. Each of the plurality of optical fiber cable units includes a jacket. The jacket is made of

polyethylene material. The multi cable includes at least 24 optical fibers.
[0010] In an embodiment of the present disclosure, the multi cable
has a tensile strength rating of about 2700 Newton.
[0011] In an embodiment of the present disclosure, the multi cable
has a minimum bend radius of about 20 D.
[0012] In an embodiment of the present disclosure, atleast one of
the plurality of optical fiber cable units includes an armored optical fiber cable.
[0013] In an embodiment of the present disclosure, one optical
fiber cable unit of the plurality of optical fiber cable unit is armored and other optical fiber cable unit is non-armored.
[0014] In an embodiment of the present disclosure, each of the two
optical fiber cable units is armored.
[0015] In an embodiment of the present disclosure, each of the two
optical fiber cable units is non-armored.
[0016] In an embodiment of the present disclosure, the atleast one
strength member is one of a central strength member, one or more embedded strength member and a peripheral strength member. The atleast one strength member is made of one of aramid, fiber reinforced plastic, glass yarns and steel wire.
[0017] In an embodiment of the present disclosure, the structural
connector is continuous throughout a length of the multi cable.

[0018] In an embodiment of the present disclosure, the structural
connector is non continuous throughout a length of the multi cable.
[0019] In an embodiment of the present disclosure, the structural
connector has a dot matrix structure.
[0020] In an embodiment, the structural connector is a continuous
portion of a jacket material of the plurality of optical fiber cable units extending from a first optical fiber cable to at least a second optical fiber cable. The structural connector separates the plurality of optical fiber units. The structural connector has a thickness of about 2.20 millimeter.
[0021] In an embodiment, the multi cable is surrounded by a
common sheath. The common sheath is made of one of high density polyethylene material and medium density polyethylene material, low smoke zero halogen, Polypropylene and Polyamide. The common sheath has a thickness in a range of about 1.5 millimeters -2 millimeters. The multi cable includes at least one ripcord positioned in a free space between the multi cable and the common sheath and wherein the at least one ripcord facilitates stripping of the common sheath to enable access to the multi cable.
[0022] In an embodiment of the present disclosure, atleast one
cable unit of the plurality of optical fiber cable units has a unitube construction.
[0023] In an embodiment of the present disclosure, wherein at least
one cable unit of the plurality of optical fiber cable units has a multitube construction.

[0024] In an embodiment of the present disclosure, each of the
plurality of optical fiber cable units includes one or more buffer tubes. Each of the one or more buffer tubes includes one of loose fibers, tight buffered fibers and optical fiber ribbon. Each of the one or more buffer tubes is characterized by a first diameter and a second diameter. The first diameter of each of the one or more buffer tubes is about 1.3 millimeters and the second diameter of each of the one or more buffer tubes is about 1.8 millimeters.
[0025] In an embodiment of the present disclosure, each of the
plurality of optical fiber cable units includes a water swellable tape. The water swellable tape has a width of about 25.0 millimeters. The water swellable tape has a thickness in a range of about 0.15 + 0.05 millimeter.
[0026] In an embodiment of the present disclosure, the multi cable
has a width of about 23.4 millimeters and a height of about 11.1 millimeters when the multi cable includes one unarmored optical fiber cable and one armored optical fiber cable.
[0027] In an embodiment of the present disclosure, the multi cable
has a width of about 23.5 millimeters and a height of about 13.4 millimeters when the multi cable includes two armored optical fiber cables.
[0028] In an embodiment of the present disclosure, the multi cable
has a width of about 21.5 millimeters and a height of about 12.4 millimeters when the multi cable includes two unarmored optical fiber cables.

[0029] In an embodiment of the present disclosure, the multi cable
has a crush resistance of about 2000 Newton per 10,000 millimeters.
[0030] In an embodiment of the present disclosure, the multi cable
has impact strength of about 25 Newton-meter.
[0031] In an embodiment of the present disclosure, the multi cable
has a tensile strength rating of about 2700 Newton.
[0032] In an embodiment of the present disclosure, the multi cable
has a minimum bend radius of about 20D.
[0033] In an embodiment of the present disclosure, the multi cable
has a weight of about 210 ± 10% kg/km.
STATEMENT OF THE DISCLOSURE
[0034] In an aspect, the present disclosure provides a multi cable.
The multi cable is defined by a first longitudinal axis. The multi cable includes a plurality of optical fiber cable units. In addition, the multi cable includes a structural connector. The plurality of optical fiber cable units is associated with a plurality of longitudinal axis. The first longitudinal axis associated with the multi cable and the plurality of longitudinal axis associated with the plurality of optical fiber cable units is substantially parallel. The structural connector keeps the plurality of optical fiber cable units in a predefined physical constrain. Each of the plurality of optical fiber cable units is substantially an outdoor optical fiber cable unit. Each of the plurality of optical fiber cable units includes atleast one strength member lying along the corresponding plurality of longitudinal axis of the plurality of optical fiber cable units. Each of the plurality of

optical fiber cable units includes a jacket. The jacket is made of polyethylene material. The multi cable includes at least 24 optical fibers.
BRIEF DESCRIPTION OF FIGURES
[0035] Having thus described the disclosure in general terms,
reference will now be made to the accompanying figures, wherein:
[0036] FIG. 1A illustrates a cross sectional view of a multi cable,
in accordance with an embodiment of the present disclosure;
[0037] FIG. IB illustrates a cross sectional view of the multi cable
of FIG. 1A in a common sheath, in accordance with an embodiment
of the present disclosure;
[0038] FIG. IC illustrates a cross sectional view of another multi
cable, in accordance with another embodiment of the present
disclosure;
[0039] FIG. ID illustrates a cross sectional view of yet another
multi cable, in accordance with yet another embodiment of the
present disclosure;
[0040] FIG.1E illustrates another cross sectional view of the multi
cable, in accordance with another embodiment of the present
disclosure;
[0041] FIG.1F illustrates another cross sectional view of the multi
cable of FIG. IC with common sheath, in accordance with another
embodiment of the present disclosure;
[0042] FIG.1G illustrates yet another cross sectional view of the
multi cable, in accordance with yet another embodiment of the
present disclosure;
[0043] FIG.1H illustrates yet another cross sectional view of the
multi cable with a common sheath in accordance with yet another
embodiment of the present disclosure;

[0044] FIG. II illustrates a perspective view of the multi cable
with a continuous structural connector, in accordance with an embodiment of the present disclosure;
[0045] FIG. 1J illustrates another perspective view of the multi
cable with a non-continuous structural connector, in accordance with an embodiment of the present disclosure; and
[0046] FIG. IK illustrates yet another perspective view of the
multi cable with a structural connector having a dot matrix structure, in accordance with an embodiment of the present disclosure.
[0047] It should be noted that the accompanying figures are
intended to present illustrations of exemplary embodiments of the present disclosure. These figures are not intended to limit the scope of the present disclosure. It should also be noted that accompanying figures are not necessarily drawn to scale.

DETAILED DESCRIPTION
[0048] Reference will now be made in detail to selected
embodiments of the present disclosure in conjunction with accompanying figures. The embodiments described herein are not intended to limit the scope of the disclosure, and the present disclosure should not be construed as limited to the embodiments described. This disclosure may be embodied in different forms without departing from the scope and spirit of the disclosure. It should be understood that the accompanying figures are intended and provided to illustrate embodiments of the disclosure described below and are not necessarily drawn to scale. In the drawings, like numbers refer to like elements throughout, and thicknesses and dimensions of some components may be exaggerated for providing better clarity and ease of understanding.
[0049] It should be noted that the terms "first", "second", and the
like, herein do not denote any order, ranking, quantity, or importance, but rather are used to distinguish one element from another. Further, the terms "a" and "an" herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.
[0050] FIG. 1A illustrates a cross sectional view of a multi cable
100, in accordance with an embodiment of the present disclosure. The multi cable 100 is a type of cable which combines at least two cables. In addition, the multi cable 100 combines at least two optical fiber cable units. The multi cable 100 is used to increase network capacity.
[0051] The multi cable 100 is defined by a first longitudinal axis
104 passing through a first geometrical center 102. The multi cable 100 includes a plurality of optical fiber cable units. In an

embodiment, the plurality of optical fiber cable units comprises a first optical fiber cable 106 and a second optical fiber cable 126 and a structural connector 134. Each of the plurality of optical fiber cable units is substantially an outdoor optical fiber cable unit. The design of the multi cable 100 is such that the multi cable 100 is configured for outdoor cable deployment. In addition, the plurality of optical fiber cable units has a plurality of longitudinal axis. The plurality of longitudinal axis passes through a plurality of geometrical centers. In addition, the FIG. 1A illustrates a cross sectional view of the multi cable 100 in which the first optical fiber cable 106 is an unarmored optical fiber cable and the second optical fiber cable 126 is an armored optical fiber cable. In an embodiment of the present disclosure, one optical fiber cable unit of the plurality of optical fiber cable unit is armored and other optical fiber cable unit is non-armored. In an embodiment of the present disclosure, each of the two optical fiber cable units is armored. In an embodiment of the present disclosure, each of the two optical fiber cable units is non-armored.
[0052] In addition, the unarmored optical fiber cable is defined
along a second longitudinal axis 110 of the plurality of longitudinal axis passing through a second geometrical center 108 of the plurality of geometrical centers. The multi cable 100 includes atleast one strength member. In an embodiment of the present disclosure, the atleast one strength member is one of a central strength member 112, one or more embedded strength member 140 and a peripheral strength member 142. The atleast one strength member is made of one of aramid, fiber reinforced plastic, glass yarns and steel wire. The atleast one strength member provides tensile strength to the multi cable 100. In an embodiment of the present disclosure, the

unarmored optical fiber cable includes a central strength member 112 (as shown in FIG. 1A). In another embodiment of the present disclosure, the unarmored optical fiber cable includes one or more embedded strength member 140 (as shown in FIG. 1C). In yet another embodiment of the present disclosure, the unarmored optical fiber cable includes a peripheral strength member 142 (as shown in FIG. ID). In addition, the unarmored optical fiber cable includes a plurality of loose tubes 114, a plurality of optical fibers 116, a water swellable tape 118, a jacket 120, a plurality of water swellable yarns 122 and a plurality of ripcords 124 (as shown in FIGS 1A, IB and 1C). The multi cable 100 includes at least 24 optical fibers.
[0053] In an embodiment of the present disclosure, the unarmored
optical fiber cable includes the central strength member 112. The central strength member 112 lies substantially along the second longitudinal axis 110 of the plurality of longitudinal axis. In addition, the second longitudinal axis 110 is passing through the second geometrical center 108 of the plurality of geometrical centers of the unarmored optical fiber cable. Further, the central strength member 112 provides physical strength to the unarmored optical fiber cable and resists over bending of the unarmored optical fiber cable. Moreover, the central strength member 112 provides tensile strength to the unarmored optical fiber cable. The tensile strength corresponds to a resistance shown by the unarmored optical fiber cable against buckling.
[0054] The central strength member 112 is made of a fiber
reinforced plastic. The fiber reinforced plastic is a composite material having a polymer matrix reinforced with glass fibers. In an embodiment of the present disclosure, the central strength member

112 is made of any other suitable material. The central strength
member 112 has a diameter of about 3 millimeters.
[0055] In an embodiment of the present disclosure, each of the
plurality of optical fiber cable units includes one or more buffer tubes. Each of the one or more buffer tubes includes one of loose fibers, tight buffered fibers and optical fiber ribbon. In an embodiment of the present disclosure, the unarmored optical fiber cable includes the plurality of loose tubes 114. The plurality of loose tubes 114 is positioned around the central strength member 112. Each of the plurality of loose tubes 114 is a tube for encapsulating the plurality of optical fibers 116. Each of the plurality of loose tubes 114 provides mechanical isolation, physical damage protection and identification of each of the plurality of optical fibers 116. Each of the plurality of loose tubes 114 is made of a thermoplastic material. The thermoplastic material is a Polybutylene terephthalate (PBT). In an embodiment, the plurality of loose tubes 114 is made of any other suitable material. In addition, each of the plurality of loose tubes 114 is a colored loose tube. The color of the plurality of loose tubes 114 is selected from a group. The group includes blue, orange, green, brown, slate, white, red and black. In an embodiment, each of the plurality of loose tubes 114 may be of any other color. Further, each of the plurality of loose tubes 114 includes a water blocking element. The water blocking element is a thixotropic gel. In another embodiment of the present disclosure, the water blocking element is made of any other suitable water repellant material. The water blocking element prevents the ingression of water inside the plurality of loose tubes 114. Furthermore, each of the plurality of loose tubes 114 is characterized by a first diameter and a second diameter. The first diameter of each of the plurality of loose tubes

114 is about 1.3 millimeters. The second diameter of each of the plurality of loose tubes 114 is about 1.8 millimeters. The first diameter is an inner diameter and the second diameter is an outer diameter of each of the plurality of loose tubes 114. In an embodiment of the present disclosure, the plurality of loose tubes 114 may have any suitable first diameter and the second diameter. Each of the plurality of loose tubes 114 includes the plurality of optical fibers 116. In an embodiment of the present disclosure, each of the plurality of loose tubes 114 includes 12 optical fibers. In another embodiment of the present disclosure, each of the plurality of loose tubes 114 includes any suitable number of optical fibers.
[0056] Each of the plurality of optical fibers 116 is a fiber used for
transmitting information as light pulses from one end to another. In addition, each of the plurality of optical fibers 116 is a thin strand of glass or plastic capable of transmitting optical signals. Further, each of the plurality of optical fibers 116 is configured to transmit a large amount of information over long distances with relatively low attenuation. Furthermore, each of the plurality of optical fibers 116 includes a core region and a cladding region. The core region is an inner part of an optical fiber and the cladding section is an outer part of the optical fiber. Each of the plurality of optical fibers 116 has a diameter of about 200-250 microns. In an embodiment of the present disclosure, the diameter of each of the plurality of optical fibers 116 may vary. In addition, each of the plurality of optical fibers 116 is a single mode optical fiber. In an embodiment of the present disclosure, each of the plurality of optical fibers 116 is a multimode fiber. Each of the plurality of optical fibers 116 has a maximum fiber attenuation of about 0.36 dB/km at a wavelength of

about 1310 nanometers. In addition, each of the plurality of optical fibers 116 has a maximum fiber attenuation of about 0.23 dB/km at a wavelength of about 1550 nanometers. The optical fiber attenuation may be referred to the loss of light energy as the light pulse travels from one end of the cable to the other.
[0057] Each of the plurality of optical fibers 116 is a colored fiber.
The color of the each of the plurality of optical fibers 116 is selected from a group. The group includes blue, orange, green, brown, slate, white, red, black, yellow, violet, pink and Aqua. In an embodiment of the present disclosure, the group may include any other suitable color. In addition, the unarmored optical fiber cable includes 8 loose tubes. Each loose tube includes 12 optical fibers. Thus, the unarmored optical fiber cable includes 96 optical fibers (8*12 = 96).
[0058] The unarmored optical fiber cable includes the water
swellable tape 118. The water swellable tape 118 surrounds the plurality of loose tubes 114 and the central strength member 112. The water swellable tape 118 is used to prevent water ingression inside the plurality of loose tubes 114. The water swellable tape 118 has a width of about 25.0 millimeters. In an embodiment of the present disclosure, the water swellable tape 118 has any suitable width. In addition, the water swellable tape 118 has a thickness of about 0.15 + 0.05 millimeter. The width of the water swellable tape corresponds to circumference of core which the tape covers with some overlap. In an embodiment of the present disclosure, the water swellable tape 118 may have any suitable thickness.
[0059] The unarmored optical fiber cable includes the jacket 120.
The jacket 120 surrounds the water swellable tape 118. In addition, the jacket 120 provides protection to the unarmored optical fiber cable. Further, the jacket 120 is made of a UV proof polyethylene

material. The UV proof polyethylene material is black in color. The polyethylene material is preferred for outdoor installation or deployment due to better mechanical properties and thermal stability. Furthermore, the jacket 120 has a thickness of about 1.6 millimeters. In an embodiment of the present disclosure, the jacket 120 is made of any other suitable material. In an embodiment of the present disclosure, the jacket 120 may have any suitable thickness.
[0060] The unarmored optical fiber cable includes the plurality of
water swellable yarns 122. The plurality of water swellable yarns 122 helically disposed between the central strength member 112 and the plurality of loose tubes 114. The plurality of water swellable yarns 122 prevents ingression of water inside the central strength member 112. In an embodiment of the present disclosure, the number of water swellable yarns present is 3. In another embodiment of the present disclosure, the number of water swellable yarns may vary.
[0061] The unarmored optical fiber cable includes the plurality of
ripcords 124. The plurality of ripcords 124 is positioned in between the water swellable tape 118 and the jacket 120. In general, the ripcords are used for easy stripping of one or more layers of the unarmored optical fiber cable. Further, each of the plurality of ripcords 124 is made of polyester-based twisted yarns. In an embodiment of the present disclosure, each of the plurality of ripcords 124 may be made of any other suitable material. Further, the unarmored optical fiber cable includes two ripcords 124. Furthermore, the two ripcords are placed diagonally opposite to each other between the water swellable tape 118 and the jacket 120. In an embodiment of the present disclosure, the unarmored optical fiber cable may include more or less number of ripcords.

[0062] The plurality of loose tubes 114, the plurality of water
swellable yarns 122 and the central strength member 112 placed inside the water swellable tape 118 to form a core of the unarmored optical fiber cable. The core has a diameter of about 6.6 millimeters. The core with water swellable tape has a diameter of about 6.9 millimeters.
[0063] In an embodiment of the present disclosure, the unarmored
optical fiber cable has a diameter of about 10.0 ±1.0 millimeters. In another embodiment, the armored optical fiber cable may have any suitable diameter.
[0064] The multi cable 100 includes the second optical fiber cable
126. The second optical fiber cable 126 is the armored optical fiber cable. The armored optical fiber cable is defined along a third longitudinal axis 130 of the plurality of longitudinal axis. The third longitudinal axis 130 is passing through a third geometrical center 128 of the plurality of geometrical centers.
[0065] The armored optical fiber cable includes the central strength
member 112, the plurality of loose tubes 114, the plurality of optical fibers 116, the water swellable tape 118. In addition, the armored optical fiber cable includes a corrugated ECCS tape 132, the jacket 120, the plurality of water swellable yarns 122 and the plurality of ripcords 124. Further, the armored cable includes an armoring layer made of the corrugated ECCS (electrolytic chrome-coated steel) tape 132. The corrugated ECCS tape 132 surrounds the water swellable tape 118 in armored optical fiber cable. The corrugated ECCS steel tape 132 is used to make the armored optical fiber cable rodent resistance. Further, the corrugated ECCS tape 132 has a width of about 30 millimeters. Furthermore, the corrugated ECCS tape 132

has a thickness of about 0.125 millimeter. In an embodiment of the present disclosure, the corrugated ECCS tape 132 has any suitable width and thickness.
[0066] The armored optical fiber cable includes the plurality of
ripcords 124. The plurality of ripcords 124 of the armored optical fiber cable is positioned in between the corrugated ECCS tape 132 and the water swellable tape 118. The jacket 120 of the armored optical fiber cable surrounds the corrugated ECCS tape.
[0067] The core with the corrugated ECCS tape 132 has a diameter
of about 7.9 millimeters. The armored optical fiber cable has a diameter of about 11.0 ± 1.0 millimeters. In addition, the armored optical fiber cable has a tensile strength of about 2700 Newton. In an embodiment, the armored optical fiber cable may have any suitable diameter and tensile strength.
[0068] The multi cable 100 includes the structural connector 134.
The structural connector 134 keeps the plurality of optical fiber cable units in a predefined physical constrain. In addition, the structural connector 134 is a continuous portion of a jacket material of the plurality of optical fiber cable units extending from the first optical fiber cable 106 to at least the second optical fiber cable 126. The jacket material separates the plurality of optical fiber units. The structural connector 134 has a thickness of about 2.20 millimeters. The dimensions of the structural connector 134 are important to maintain the required adherence of the optical fiber cable units. In case the dimensions of the structural connector 134 are less than a certain value, the structural connector 134 could tear apart easily while loading or unloading the whole multi cable 100 over a drum. In case the dimensions of the structural connector 134 are greater than a certain value, the separation of the optical fiber cable units

will be difficult into the field. The structural connector 134 connects the corresponding jacket of the plurality of optical fiber cable units. The structural connector 134 is configured to be split to allow separation of at least one cable unit of the plurality of optical fiber cable units for independent use of each cable unit.
[0069] In an embodiment of the present disclosure, the structural
connector 134 connects the first optical fiber cable 106 and the second optical fiber cable 126 in such a way that the structural connector 134 forms a flat shape structure. In other words, the structural connector is flat in shape. In addition, the multi cable 100 has a breadth of about 23.4 millimeters and a height of about 11.1 millimeters when the first optical fiber cable 106 and the second optical fiber cable 126 are connected with the flat shape structural connector.
[0070] In another embodiment of the present disclosure, the
structural connector 134 connects the first optical fiber cable 106 and the second optical fiber cable 126 to form a figure-8 shape structure. In other words, the first optical fiber cable 106 and the second optical fiber cable 126 are connected to form a figure -8 type of structure.
[0071] In an embodiment of the present disclosure, the structural
connector 134 connects the first optical fiber cable 106 and the second optical fiber cable 126 in such a way that it can be zipped easily. This helps in the separation of one of the first optical fiber cable 106 and the second optical fiber cable 126 when required after installation. In addition, the multi cable 100 includes a dot matrix structure over the structural connector 134 which facilitates in separating the first optical fiber cable 106 and the second optical fiber cable 126 whenever required. In an embodiment of the present

disclosure, the structural connector 134 is continuous throughout a
length of the multi cable 100 (as shown in FIG. II). The
continuously extending structural connector 134 is manufactured
during the extrusion process of the jacket of the multi cable 100.
The continuously extending structural connector 134 enables
separation of the cable units along a length. In another embodiment
of the present disclosure, the structural connector 134 is non-
continuous throughout a length of the multi cable 100 (as shown in
FIG. 1 J). The non-continuous structural connector 134 corresponds
to a number of gaps along a length of the structural connector 134.
Each gap is located between successive portions of the structural
connector 134. In an embodiment of the present disclosure, a
distance covered by each gap is same throughout the length of the
structural connector 134. The non-continuously extending structural
connector 134 is manufactured during the extrusion process of the
jacket of the multi cable 100. The non-continuously extending
structural connector 134 enables separation of the cable units for
short lengths. In yet another embodiment of the present disclosure,
the structural connector 134 has a dot matrix structure (as shown in
FIG. IK). The structural connector 134 with the dot matrix
structure is manufactured during the extrusion process of the jacket
of the multi cable 100.
[0072] In an embodiment of the present disclosure, atleast one
optical fiber cable unit of the plurality of optical fiber cable units has a multitube construction. In an example, the atleast one optical fiber cable units of the plurality of optical fiber cable units includes a plurality of loose tubes and each loose tubes includes a plurality of optical fibers. In another embodiment of the present disclosure, atleast one optical fiber cable unit of the plurality of optical fiber

cable units has a unitube construction. In an example, the atleast one optical fiber cable unit of the plurality of optical fiber cable units includes a central loose tube for enclosing a plurality of optical fibers. The multi cable 100 is configured to be utilized for one or more outdoor applications. The one or more outdoor applications include at least distribution application and feeder application.
[0073] In an embodiment of the present disclosure, the multi cable
100 has an overall width of about 23.4 millimeters and an overall height of about 11.1 millimeters when the multi cable 100 includes 1 unarmored optical fiber cable and 1 armored optical fiber cable. In another embodiment, the multi cable 100 may have any suitable overall width and overall height when the multi cable 100 includes one unarmored optical fiber cable and one armored optical fiber cables.
[0074] FIG. IB illustrates a cross sectional view of the multi cable
100 in a common sheath, in accordance with an embodiment of the present disclosure. In addition, the FIG. IB illustrates a cross sectional view of the multi cable 100 having at least one armored optical fiber cable and at least one unarmored optical fiber cable inside a common sheath 136. The multi cable 100 includes a first optical fiber cable 106 and a second optical fiber cable 126. The first optical fiber cable 106 is an unarmored optical fiber cable and the second optical fiber cable 126 is an armored optical fiber cable. In an embodiment of the present disclosure, the multi cable 100 is placed inside the common sheath 136. In general, the common sheath is designed for underground installations of the communications cable. The common sheath 136 includes the multi cable 100. In addition, the common sheath 136 includes atleast one ripcord 138. The atleast one ripcord is positioned in a free space

between the multi cable 100 and the common sheath 136. The atleast one ripcord 138 facilitates easy access of multi cable 100. The atleast one ripcord 138 facilitates stripping of the common sheath 136 to enable access to the multi cable 100. The common sheath is made of one of medium density polyethylene, high density polyethylene material, low smoke zero halogen, Polypropylene and Polyamide. In an embodiment of the present disclosure, the common sheath may be made of any other suitable material. In an embodiment of the present disclosure, the common sheath has a thickness of about 1.6 millimeters. In another embodiment of the present disclosure, the common sheath has a thickness in a range of about 1.5 millimeters - 2 millimeters. In yet another embodiment of the present disclosure, the common sheath may have any other suitable thickness.
[0075] FIG.1E illustrates another cross sectional view of the multi
cable 100, in accordance with another embodiment of the present disclosure. In addition, the FIG. IE illustrates a cross sectional view of the multi cable 100 having atleast two armored cables. Further, FIG. IE illustrates a cross sectional view of the multi cable 100 with another embodiment of the present disclosure. The multi cable 100 includes at least two optical fiber cables. The at least two optical fiber cable includes a first optical fiber cable 106 and a second optical fiber cable 126. In an embodiment, the first optical fiber cable 106 is an armored optical fiber cable (as explained in FIG. 1) and the second optical fiber cable 126 is also an armored optical fiber cable (as explained in FIG. 1).
[0076] In an embodiment of the present disclosure, the multi cable
100 has an overall width of about 23.5 millimeters and an overall height of about 13.4 millimeters when the multi cable 100 includes 2

armored optical fiber cables. In another embodiment, the multi cable
100 may have any suitable overall width and overall height when the
multi cable 100 includes two armored optical fiber cables.
[0077] FIG.IF illustrates yet another cross sectional view of the
multi cable 100 in a common sheath 136, in accordance with another embodiment of the present disclosure. In addition, the FIG. IF illustrates a cross sectional view of the multi cable 100 having at least two armored optical fiber cable inside the common sheath 136. The multi cable 100 includes a first optical fiber cable 106 and a second optical fiber cable 126. The first optical fiber cable 106 is an armored optical fiber cable and the second optical fiber cable 126 is also an armored optical fiber cable. In an embodiment of the present disclosure, the multi cable 100 is placed inside the common sheath 136. In general, the common sheath is designed for underground installations of communications cable. The common sheath 136 includes the multi cable 100. In addition, the common sheath 136 includes atleast one ripcord 138. The atleast one ripcord is positioned in a free space between the multi cable 100 and the common sheath 136. The atleast one ripcord 138 facilitates easy access of multi cable 100. The atleast one ripcord 138 facilitates stripping of the common sheath 136 to enable access to the multi cable 100. The common sheath is made of one of medium density polyethylene, high density polyethylene, low smoke zero halogen, Polypropylene and Polyamide. In an embodiment of the present disclosure, the common sheath may be made of any other suitable material. In an embodiment of the present disclosure, the common sheath has a thickness of about 1.6 millimeters. In another embodiment of the present disclosure, the common sheath has a thickness in a range of about 1.5 millimeters - 2 millimeters. In yet

another embodiment of the present disclosure, the common sheath may have any other suitable thickness.
[0078] FIG.1G illustrates yet another cross sectional view of the
multi cable 100, in accordance with yet another embodiment of the present disclosure. In addition, the FIG. IG illustrates yet another cross sectional view of the multi cable 100 having atleast two unarmored optical fiber cables. Further, FIG. IG illustrates a cross sectional view of the multi cable 100 with yet another embodiment of the present disclosure. The multi cable 100 includes at least two optical fiber cables. The at least two optical fiber cable includes a first optical fiber cable 106 and a second optical fiber cable 126. In an embodiment, the first optical fiber cable 106 is an unarmored optical fiber cable (as explained in FIG. 1A) and the second optical fiber cable 126 is also an unarmored optical fiber cable (as explained in FIG. 1A)
[0079] In an embodiment of the present disclosure, the multi cable
100 has an overall width of about 21.5 millimeters and an overall height of about 12.4 millimeters when the multi cable 100 includes 2 unarmored optical fiber cables. In another embodiment, the multi cable 100 may have any suitable overall width and overall height when the multi cable 100 includes two unarmored optical fiber cables.
[0080] FIG.1H illustrates yet another cross sectional view of the
multi cable 100 in a common sheath 136, in accordance with yet another embodiment of the present disclosure. In addition, the FIG. 1H illustrates a cross sectional view of the multi cable 100 having at least two unarmored optical fiber cable inside the common sheath 136. The multi cable 100 includes a first optical fiber cable 106 and a second optical fiber cable 126. The first optical fiber cable 106 is

an unarmored optical fiber cable and the second optical fiber cable
126 is also an unarmored optical fiber cable. In an embodiment of
the present disclosure, the multi cable 100 is placed inside the
common sheath 136. In general, the common sheath is designed for
underground installations of communications cable. The common
sheath 136 includes the multi cable 100. In addition, the common
sheath 136 includes atleast one ripcord 138. The atleast one ripcord
is positioned in a free space between the multi cable 100 and the
common sheath 136. The atleast one ripcord 138 facilitates easy
access of multi cable 100. The atleast one ripcord 138 facilitates
stripping of the common sheath 136 to enable access to the multi
cable 100. The common sheath is made of one of medium density
polyethylene, high density polyethylene, low smoke zero halogen,
Polypropylene and Polyamide. In an embodiment of the present
disclosure, the common sheath may be made of any other suitable
material. In an embodiment of the present disclosure, the common
sheath has a thickness of about 1.6 millimeters. In another
embodiment of the present disclosure, the common sheath has a
thickness in a range of about 1.5 millimeters - 2 millimeters. In yet
another embodiment of the present disclosure, the common sheath
may have any other suitable thickness.
[0081] The multi cable 100 includes 192 as the total number of
fibers when the multi cable includes two optical fiber cables. Each cable of the two optical fiber cable includes 96 fibers. In an embodiment, the multi cable 100 may include fibers in the range of about 24 fibers to 864 fibers. In another embodiment of the present disclosure, the multi cable 100 may include any number of fibers according to the requirement.

[0082] In an embodiment of the present disclosure, the multi cable
100 has a crush resistance of about 2000 Newton per 10,000 millimeters. Generally, crush resistance testing is the measurement of a compressive load to a point when a sample deforms, fractures, shatters or collapses. In addition, the multi cable 100 has impact strength of about 25 Newton-meter. Generally, impact strength is defined as the resistance of a material to fracture by a blow. Further, the multi cable 100 has torsion of about ±180 degrees. Generally, torsion is the twisting of an object due to an applied torque. The multi cable 100 has a tensile strength rating of about 2700 Newton. The tensile strength of any material corresponds to how much stress the material can endure before failure. The multi cable 100 has a minimum bend radius of about 20 D. Generally, the minimum bend radius of a cable is the radius one can bend a cable without kinking it, damaging it, or shortening its life. The multi cable 100 has temperature performance of about -10 degree Celsius to + 60 degree Celsius during installation. The multi cable 100 has temperature performance of about -20 degree Celsius to + 70 degree Celsius during service. The multi cable 100 has temperature performance of about -20 degree Celsius to + 70 degree Celsius during storage. The multi cable 100 has a weight of about 210 ± 10% kg/km. In an embodiment of the present disclosure, the multi cable 100 has any suitable value of crush resistance, torsion, tensile strength and impact strength.
[0083] The multi cable as disclosed herein is quite significant over
the prior arts. The multi cable can be used for outdoor applications due to having polyethylene material of the Jacket. In addition, each cable of the multi cable can be used separately based on the

requirement of network. Further, the multi cable increases the
network capacity and reduces the cost of installation.
[0084] The foregoing descriptions of pre-defined embodiments of
the present technology have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present technology to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the present technology and its practical application, to thereby enable others skilled in the art to best utilize the present technology and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omissions and substitutions of equivalents are contemplated as circumstance may suggest or render expedient, but such are intended to cover the application or implementation without departing from the spirit or scope of the claims of the present technology.

WE CLAIM

1.A multi cable (100), wherein the multi cable (100) is defined by a first longitudinal axis (104), the multi cable (100) comprising:
a plurality of optical fiber cable units (106, 126), wherein the plurality of optical fiber cable units (106, 126) are lying along a corresponding plurality of longitudinal axis (110, 130), wherein the first longitudinal axis (104) associated with the multi cable (100) and the plurality of longitudinal axis (110, 130) associated with the plurality of optical fiber cable units (106, 126) are substantially parallel; and
a structural connector (134), wherein the structural connector (134) keeps the plurality of optical fiber cable units (106, 126) in a pre-defined physical constrain, wherein each of the plurality of optical fiber cable units (106, 126) is substantially an outdoor optical fiber cable unit, wherein each of the plurality of optical fiber cable units (106, 126) comprises atleast one strength member, wherein each of the plurality of optical fiber cable units (106, 126) comprises a jacket (120), wherein the jacket is made of polyethylene material, wherein the multi cable (100) comprises at least 24 optical fibers.
2.The multi cable (100) as recited in claim 1, wherein the multi cable (100) has a tensile strength rating of about 2700 Newton.
3.The multi cable (100) as recited in claim 1, wherein the multi cable (100) has a minimum bend radius of about 20 D.

4.The multi cable (100) as recited in claim 1, wherein one optical fiber cable unit of the plurality of optical fiber cable unit (106, 126) is armored and other optical fiber cable unit is non-armored.
5. The multi cable (100) as recited in claim 1, wherein each of the two optical fiber cable units (106, 126) is one of armored and non-armored.
6.The multi cable (100) as recited in claim 1, wherein the atleast one strength member (112, 140, 142) is one of a central strength member (112), one or more embedded strength member (140) and a peripheral strength member (142), wherein the atleast one strength member (112, 140, 142) is made of one of aramid, fiber reinforced plastic, glass yarns and steel wire, wherein the central strength member (112) has a diameter of about 3 millimeters.
7.The multi cable (100) as recited in claim 1, wherein the structural connector (134) is a continuous portion of a jacket material of the plurality of optical fiber cable units extending from a first optical fiber cable (106) to at least a second optical fiber cable (126), wherein the structural connector (134) separates the plurality of optical fiber cable units (106, 126), wherein the structural connector (134) has a thickness of about 2.20 millimeter.
8. The multi cable (100) as recited in claim 1, wherein the structural connector (134) is continuous throughout a length of the multi cable (100).

9. The multi cable (100) as recited in claim 1, wherein the structural
connector (134) is non continuous throughout a length of the multi
cable (100).
10. The multi cable (100) as recited in claim 1, wherein the structural
connector (134) has a dot matrix structure.
11. The multi cable (100) as recited in claim 1, wherein the multi cable (100) is surrounded by a common sheath (136), wherein the common sheath (136) is made of one of high density polyethylene material, medium density polyethylene material, low smoke zero halogen, Polypropylene and Polyamide, wherein the common sheath (136) has a thickness in a range of about 1.5 millimeters - 2 millimeters, wherein the multi cable (100) comprises at least one ripcord (138) positioned in a free space between the multi cable and the common sheath (136).
12. The multi cable (100) as recited in claim 1, wherein atleast one cable unit of the plurality of optical fiber cable units (106, 126) has one of a unitube construction and a multitube construction.
13. The multi cable (100) as recited in claim 1, wherein each of the plurality of optical fiber cable units (106, 126) comprises one or more buffer tubes, wherein each of the one or more buffer tubes comprises one of loose fibers, tight buffered fibers and optical fiber ribbon, wherein each of the one or more buffer tubes is characterized by a first diameter and a second diameter, the first diameter of each of the one or more buffer tubes is about 1.3 millimeters and wherein the second diameter of each of the one or more buffer tubes is about 1.8 millimeters.

14. The multi cable (100) as recited in claim 1, wherein each of the plurality of optical fiber cable units (106, 126) comprises a water swellable tape (118), wherein the water swellable tape (118) has a width of about 25.0 millimeters, wherein the water swellable tape (118) has a thickness in a range of of about 0.15 + 0.05 millimeter.
15. The multi cable (100) as recited in claim 1, wherein the multi cable (100) has a width of about 23.4 millimeters and a height of about 11.1 millimeters when the multi cable (100) comprises one unarmored optical fiber cable and one armored optical fiber cable.
16. The multi cable (100) as recited in claim 1, wherein the multi cable (100) has a width of about 23.5 millimeters and a height of about 13.4 millimeters when the multi cable (100) comprises two armored optical fiber cables.
17. The multi cable (100) as recited in claim 1, wherein the multi cable (100) has a width of about 21.5 millimeters and a height of about 12.4 millimeters when the multi cable (100) comprises two unarmored optical fiber cables.
18. The multi cable (100) as recited in claim 1, wherein the multi cable (100) has a crush resistance of about 2000 Newton per 10,000 millimeters.
19. The multi cable (100) as recited in claim 1, wherein the multi cable (100) has impact strength of about 25 Newton-meter.

20. The multi cable (100) as recited in claim 1, wherein the multi cable (100) has a tensile strength rating of about 2700 Newton.
21. The multi cable (100) as recited in claim 1, wherein the multi cable (100) has a minimum bend radius of about 20D.
22. The multi cable (100) as recited in claim 1, wherein the multi cable (100) has a weight of about 210 ± 10% kg/km.