DESC:TECHNICAL FIELD
[0001] The present disclosure relates to the field of fibre optics. More particularly, the present disclosure relates to a flexible optical fibre ribbon.The
present application is based on, and claims priority from an Indian Application
Number 201821022743 filed on 18th June 2018, the disclosure of which is hereby incorporated by reference herein.

BACKGROUND
[0002] Optical fibre cables have secured an important position in building a network of modern communication systems across the world. One such type of optical fibre cables are optical fibre ribbon cables. These optical fibre ribbon cables include a plurality of optical fibre ribbons. Each optical fibre ribbon includes a number of optical fibres placed adjacent and bonded together with a matrix material. Currently, the optical fibre ribbons have flat surface and are arranged in vertical and horizontal manner inside a buffer tube of the optical fibre ribbon cables. This kind of arrangement inherently takes more space inside the optical fibre ribbon cable. Further, this leads to a larger diameter of the optical fibre ribbon cable. Furthermore, this leads to higher cable weight which further attracts problems during manufacturing, transporting and installation. These problems have more prominent effects in the optical fibre ribbon cables having large number of optical fibres/optical fibre ribbons.

[0003] In light of the above stated discussion, there is a need for a bendable optical fibre ribbon that overcomes the above sited drawbacks.

OBJECT OF THE DISCLOSURE
[0004] A primary object of the present disclosure is to provide a flexible and rollable optical fibre ribbon.

[0005] Yet another object of the present disclosure is to provide the optical fibre ribbon that reduces overall diameter of an optical fibre cable in which the optical fibre ribbon is installed.

[0006] Yet another object of the present disclosure is to provide the optical fibre ribbon that is easy to splice.

[0007] Yet another object of the present disclosure is to provide the optical fibre ribbon that is easily rollable both in forward and backward directions.

[0008] Yet another object of the present disclosure is to provide the optical fibre ribbon that reduces overall weight of the optical fibre cable in which the optical fibre ribbon is installed.

[0009] Yet another object of the present disclosure is to provide the optical fibre ribbon that is compatible with optical fibre ribbons having 250 micron optical fibres.

[0010] Yet another object of the present disclosure is to provide the optical fibre ribbon that enables mass fusion splicing.

SUMMARY
[0011] In an aspect, the present disclosure provides a flexible optical fibre ribbon. The flexible optical fibre ribbon includes a plurality of optical fibres arranged in parallel. In addition, the flexible optical fibre ribbon includes a matrix material enclosing the plurality of optical fibres. The plurality of optical fibres are corrugated. In addition, each optical fibre of the plurality of optical fibres has diameter in range of about 210 ± 5 micron. The matrix material is made of a flexible material. The matrix material has a pre-defined desirable flexibility. The matrix material imparts flexibility to the flexible optical fibre ribbon. The flexible optical fibre ribbon has height ‘h’ in range of about 0.25 millimeter and 0.3 millimeter. The flexible optical fibre ribbon has width ‘w’ in range of about 1220 micrometer to 3220 micrometer. The flexible optical fibre ribbon is easy to roll in desired direction.

[0012] In an embodiment of the present disclosure, the flexible optical fibre ribbon has a fibre to fibre pitch (dpitch) of about 0.25 millimeter to 0.255 millimeter when the each optical fibre of the plurality of optical fibres has a diameter of about 210 ± 5 micron.

[0013] In an embodiment of the present disclosure, the flexible optical fibre ribbon has a distance ‘x’ between extreme fibres in the flexible optical fibre ribbon in a range of about 786 micrometer to 2882 micrometer.

[0014] In an embodiment of the present disclosure, the flexible optical fibre ribbon has planarity in a range of about 50 micrometer and 75 micrometer.

[0015] In an embodiment of the present disclosure, the flexible optical fibre ribbon is compatible for fusion splicing with an existing standard 250 micron fibre ribbon.

[0016] In an embodiment of the present disclosure, the plurality of optical fibres in the flexible optical fibre ribbon is in range of 4 to 12.

[0017] In an embodiment of the present disclosure, the matrix material is of curable UV acrylate.

STATEMENT OF THE DISCLOSURE
[0018] The present disclosure relates to a flexible optical fibre ribbon. The flexible optical fibre ribbon includes a plurality of optical fibres arranged in parallel. In addition, the flexible optical fibre ribbon includes a matrix material enclosing the plurality of optical fibres. The plurality of optical fibres are corrugated. In addition, each optical fibre of the plurality of optical fibres has diameter in range of about 210 ± 5 micron. The matrix material is made of a flexible material. The matrix material has a pre-defined desirable flexibility. The matrix material imparts flexibility to the flexible optical fibre ribbon. The flexible optical fibre ribbon has height ‘h’ in range of about 0.25 millimeter and 0.3 millimeter. The flexible optical fibre ribbon has width ‘w’ in range of about 1220 micrometer to 3220 micrometer. The flexible optical fibre ribbon is easy to roll in desired direction.

BRIEF DESCRIPTION OF FIGURES
[0019] Having thus described the disclosure in general terms, reference will now be made to the accompanying figures, wherein:

[0020] FIG. 1 illustrates a cross-sectional view of a flexible optical fibre ribbon in normal position, in accordance with an embodiment of the present disclosure;

[0021] FIG. 2 illustrates a cross-sectional view of the flexible optical fibre ribbon in folding position, in accordance with another embodiment of the present disclosure;

[0022] FIG. 3 illustrates a cross-sectional view of the flexible optical fibre ribbon in normal position, in accordance with yet another embodiment of the present disclosure; and

[0023] FIG. 4 illustrates a cross-sectional view of the flexible optical fibre ribbon in folding position, in accordance with yet another embodiment of the present disclosure.

[0024] 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
[0025] 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.

[0026] 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.

[0027] FIG. 1 illustrates a cross-sectional view of a flexible optical fibre ribbon 100 in normal position, in accordance with an embodiment of the present disclosure. The flexible optical fibre ribbon 100 includes a plurality of optical fibres 102, and a matrix material 104. The flexible optical fibre ribbon 100 includes the plurality of optical fibres 102 arranged in parallel. In an embodiment of the present disclosure, the flexible optical fibre ribbon 100 is positioned inside a buffer tube. In general, buffer tube includes a water blocking tape to prevent ingression of water inside the flexible optical fibre ribbon 100. In an embodiment of the present disclosure, the flexible optical fibre ribbon 100 is used in an optical fibre ribbon cable.

[0028] In general, an optical fibre ribbon comprises various optical fibres placed side by side. In addition, optical fibre ribbon comprises number of optical fibres placed adjacently in a linear manner. In general, optical fibre is a thin strand of glass or plastic capable of transmitting optical signals. In general, optical fibre is a fibre used for transmitting information as light pulses from one end to another. In addition, the optical fibre is a thin strand of glass or plastic capable of transmitting optical signals. Moreover, the optical fibre is configured to transmit large amount of information over long distances.

[0029] The flexible optical fibre ribbon 100 includes the matrix material 104. The matrix material 104 encloses the plurality of optical fibres 102. In addition, the matrix material 104 imparts flexibility to the flexible optical fibre ribbon 100. The flexible optical fibre ribbon 100 is a rollable optical fibre ribbon. The flexibility is imparted in the flexible optical fibre ribbon 100 due to use of a flexible matrix material. The matrix material 104 is made of a flexible material. The matrix material 104 is of curable UV acrylate. The matrix material 104 has a pre-defined desirable flexibility. The matrix material 104 refers to a material with which the flexible optical fibre ribbon 100 is manufactured. The flexible optical fibre ribbon 100 is a corrugated optical fibre ribbon. The plurality of optical fibres 102 are corrugated. In general, corrugated means to shape a material or surface into a series of parallel ridges and grooves so as to give added rigidity and strength. In an embodiment of the present disclosure, the corrugation is on both sides of the flexible optical fibre ribbon 100 (as shown in the FIG. 1).

[0030] In an embodiment of the present disclosure the plurality of optical fibres 102 in the flexible optical fibre ribbon 100 is in range of 4 to 12. In an embodiment of the present disclosure, each optical fibre of the plurality of optical fibres 102 has diameter in range of about 210 ± 5 micron. In an embodiment of the present disclosure, the flexible optical fibre ribbon 100 is compatible for fusion splicing with an existing standard 250 micron fibre ribbon. In an embodiment of the present disclosure, the flexible optical fibre ribbon 100 has a height ‘h’ in a range of about 0.25 millimeter and 0.3 millimeter. In an embodiment of the present disclosure, the flexible optical fibre ribbon 100 has a fibre to fibre pitch (dpitch) of about 0.25 millimeter to 0.255 millimeter when each optical fibre of the plurality of optical fibres 102 has a diameter of about 210 ± 5 micron.

[0031] In an embodiment of the present disclosure, the flexible optical fibre ribbon 100 has a width ‘w’ in a range of about 1220 micrometer to 3220 micrometer. The flexible optical fibre ribbon 100 is easy to roll in desired direction. In an embodiment of the present disclosure, the flexible optical fibre ribbon 100 has a distance ‘x’ between extreme fibres in the flexible optical fibre ribbon 100 in a range of about 786 micrometer to 2882 micrometer. In an embodiment of the present disclosure, the flexible optical fibre ribbon 100 has planarity in a range of about 50 micrometer and 75 micrometer.

[0032] FIG. 2 illustrates a cross-sectional view of the flexible optical fibre ribbon 100 in folding position, in accordance with an embodiment of the present disclosure. The flexible optical fibre ribbon 100 is a rollable optical fibre ribbon. In addition, the flexible optical fibre ribbon 100 is a corrugated optical fibre ribbon. The flexible optical fibre ribbon 100 may be rolled in any direction. (as shown in FIG. 2)

[0033] In an embodiment of the present disclosure, corrugation is on both sides of the flexible optical fibre ribbon 100. In another embodiment of the present disclosure, corrugation is on any one side of the flexible optical fibre ribbon 100. Moreover, the other side of the flexible optical fibre ribbon 100 is flat. Further, the flexible optical fibre ribbon 100 is made of the matrix material 104. The matrix material 104 is a curable UV acrylate. The matrix material 104 curable UV acrylate has a pre-defined desirable flexibility.

[0034] FIG. 3 illustrates a cross sectional view of the flexible optical fibre ribbon 100 in normal position, in accordance with another embodiment of the present disclosure. In another embodiment of the present disclosure, the corrugation is on any one side of the flexible optical fibre ribbon 100 and the other side of the flexible optical fibre ribbon 100 is flat (as shown in FIG. 3). In general, corrugation is defined as grooving or folds on any surface. In addition, corrugation enables the flexible optical fibre ribbon 100 to roll in a circular fashion. The rolling of the flexible optical fibre ribbon 100 allows it to consume less space when positioned inside the buffer tube. In an embodiment of the present disclosure, corrugation is on both sides of the flexible optical fibre ribbon 100 which allows it to roll in circular fashion from any of the two sides of the flexible optical fibre ribbon 100 (as shown in the FIG. 2).

[0035] FIG. 4 illustrates a cross sectional view of the flexible optical fibre ribbon 100 in folding position, in accordance with another embodiment of the present disclosure. In yet another embodiment of the present disclosure, the corrugation is on any one side of the flexible optical fibre ribbon 100 and the other side is flat (as shown in FIG. 3) which allows it to roll only from the side which is corrugated (as shown in FIG. 4).

[0036] The flexible optical fibre ribbon 100 includes the matrix material 104. The matrix material 104 imparts flexibility to the flexible optical fibre ribbon 100. The flexibility of the flexible optical fibre ribbon 100 enables it to roll easily. In general, flexibility is property of material with which the optical fibre ribbon is made. In addition, flexibility may be referred to ability of any material to undergo bending without any cracks or other failures when an external force is applied to it. In an embodiment of the present disclosure, the matrix material 104 is a curable UV acrylate. The matrix material 104 curable UV acrylate is a special kind of material having pre-defined flexibility. The matrix material 104 brings flexibility to the flexible optical fibre ribbon 100. In an embodiment of the present disclosure, the curable UV acrylate has predefined properties. The curable UV acrylate is soft material having high elongation along with fast cure speed. The fast cure speed of the curable UV acrylate leads to improvement in productivity of the flexible optical fibre ribbon 100. The cured film exhibits excellent film stability.

[0037] The cured coating exhibits various mechanical properties. The mechanical properties of the cured coating includes but may not be limited to Secant Modulus, Elongation, Tensile strength, Degree of cure and Water Absorption. The secant modulus of the cured coating at 2.5 % strain is around 49 Mega Pascal. In general, secant modulus is defined as ratio of stress to strain at any point on curve in a stress-strain curve. The elongation of the cured coating is around 55%. In general, elongation is defined as ductility of a material as determined by a tension test. The tensile strength of the cured coating is around 15 Mega Pascal. In general, tensile strength of a material is defined as the ability of a material to be stretched without breaking. The degree of cure when the UV dose is at 95% of the ultimate secant modulus is around 0.5 J/cm2. The cured coating having a width of about 250 micro meter has a water absorption of about 3 percent after a time duration of about 24 hours.

[0038] In an embodiment of the present disclosure, the liquid coating exhibits various performance characteristics. The performance characteristics of the cured coating includes but may not be limited to viscosity and density. The liquid coating has a viscosity of about 9900 millipascal seconds at a temperature of 25 degree Celsius. In general, the viscosity of a fluid may be defined as the fluid’s internal resistance to flow. In other words, the viscosity of a fluid may be defined as the resistance of a fluid to deformation under shear stress. The liquid coating has a density of about 1110 kilogram per meter cube at a temperature of about 23 degree Celsius. In general, density is defined as the mass per unit volume.

[0039] In an embodiment of the present disclosure, the cured coating exhibits various performance characteristics. The performance characteristics of the cured coating includes but may not be limited to glass transition temperature. The glass transition temperature (DMA*) at E’ at 1000 Mega Pascal is about -18 degree Celsius. The glass transition temperature (DMA*) at E’ at 100 Mega Pascal is about -28 degree Celsius. In general, glass transition temperature is the point at which a material changes its state from hard brittle state to soft rubbery state.

[0040] The material curable UV acrylate has other predefined properties. The other predefined properties have predefined values. The material curable UV acrylate is under various test procedures and experiments for the determination of certain properties of the material along with the values of those properties of the material.

[0041] The flexible optical fibre ribbon 100 has ability of mass fusion splicing. In an embodiment of the present disclosure, the flexible optical fibre ribbon 100 is spliced with existing splicing technology. In general, fusion splicing is phenomenon of joining ends of the two optical fibres using heat. In addition, the joint should be made in such a way as to prevent scattering of light from splice when light travels through the optical fibre. The process of fusion splicing mainly involves the use of heat to melt ends of the optical fibre for joining or fusion together. Moreover, the process majorly involves four steps. The four steps include stripping of the fibre, cleaning of the fibre, cleaving of the fibre followed with splicing of the fibre.

[0042] The flexible optical fibre ribbon 100 includes the plurality of optical fibres 102. In an embodiment of the present disclosure, number of the plurality of optical fibres 102 in the flexible optical fibre ribbon 100 is 4. In another embodiment of the present disclosure, number of the plurality of optical fibres 102 in the flexible optical fibre ribbon 100 is 6. In yet another embodiment of the present disclosure, number of the plurality of optical fibres 102 in the flexible optical fibre ribbon 100 is 8. In yet another embodiment of the present disclosure, number of the plurality of optical fibres 102 in the flexible optical fibre ribbon 100 is 12. In yet another embodiment of the present disclosure, number of the plurality of optical fibres 102 in the flexible optical fibre ribbon 100 may vary.

[0043] In addition, each optical fibre of the plurality of optical fibres 102 used in the flexible optical fibre ribbon 100 has a diameter of about 200 micron. In an embodiment of the present disclosure, each optical fibre of the plurality of optical fibres 102 used in the flexible optical fibre ribbon 100 has a diameter of about 205 micron. In another embodiment of the present disclosure, each optical fibre of the plurality of optical fibres 102 used in the flexible optical fibre ribbon 100 has a diameter of about 210 micron. In yet another embodiment of the present disclosure, each optical fibre of the plurality of optical fibres 102 used in the flexible optical fibre ribbon 100 has a diameter of about 215 micron. In yet another embodiment of the present disclosure, each optical fibre of the plurality of optical fibres 102 used in the flexible optical fibre ribbon 100 may have any suitable diameter.

[0044] The flexible optical fibre ribbon 100 with 200 micron optical fibres is compatible for fusion splicing with existing standard 250 micron fibre ribbon. In an embodiment of the present disclosure, the flexible optical fibre ribbon 100 with the plurality of optical fibres 102 of any suitable diameter is compatible for fusion splicing with existing standard 250 micron fibre ribbon.

[0045] In embodiment of the present disclosure, the flexible optical fibre ribbon 100 has a fibre to fibre pitch (dpitch) of about 0.255 millimeter when each optical fibre of the plurality of optical fibres 102 has a diameter of about 200 micron. In another embodiment of the present disclosure, the flexible optical fibre ribbon 100 has a fibre to fibre pitch (dpitch) of about 0.250 millimeter when each optical fibre of the plurality of optical fibres 102 has a diameter of about 200 micron. In general, fibre to fibre pitch is defined as distance between centers of any two consecutive optical fibres in the optical fibre ribbon. The spacing between any two consecutive optical fibres in the flexible optical fibre ribbon 100 is filled with the UV curable acrylate material. In an embodiment of the present disclosure, the fibre to fibre pitch (dpitch) is in a range of about 200 micron and 255 micron and the distance between two optical fibres is in a range of about 35 micron and 50 micron when each optical fibre of the plurality of optical fibres 102 has a fibre diameter in a range of about 210±5 micron.

[0046] The flexible optical fibre ribbon 100 has a height ‘h’ in a range of about 0.25 millimeter and 0.3 millimeter. The height ‘h’ of the flexible optical fibre ribbon 100 is measured as perpendicular distance between the two tangents, when the two tangents drawn at lowest most and upper most point in the flexible optical fibre ribbon 100.

[0047] In an embodiment of the present disclosure, the extreme fibre distance ‘x’ between each of the plurality of optical fibres 102 is measured. The distance between the two extreme optical fibres in the flexible optical fibre ribbon 100 is defined as the extreme fibre distance ‘x’ (as shown in FIG. 1 and FIG. 3). In an embodiment of the present disclosure, the planarity of the flexible optical fibre ribbon 100 is measured. One horizontal line is drawn from center of core of an optical fibre of the plurality of optical fibres 102 which is topmost. Another horizontal line is drawn from center of core of the optical fibre of the plurality of optical fibres 102 which is bottom most. A perpendicular (vertical) line is drawn between the two horizontal lines. This perpendicularly measured distance is defined as the ribbon planarity. Theoretically, all the fibres in the ribbon should be in same plane (central plane of ribbon), but practically during manufacturing process few fibres get shifted from central plane of the ribbon. This deviation is defined as planarity.

[0048] In an embodiment of the present disclosure, the flexible optical fibre ribbon 100 includes 4 optical fibres. The flexible optical fibre ribbon 100 has a width ‘w’ of about 1220 micrometer. The flexible optical fibre ribbon 100 has a height ‘h’ in a range of about 250 micrometer and 300 micrometer. The distance ‘x’ between the extreme optical fibres in the flexible optical fibre ribbon 100 is about 786 micrometer. The flexible optical fibre ribbon 100 has a planarity of about 50 micrometer.

[0049] In another embodiment of the present disclosure, the flexible optical fibre ribbon 100 includes 6 optical fibres. The flexible optical fibre ribbon 100 has a width ‘w’ of about 1648 micrometer. The flexible optical fibre ribbon 100 has a height ‘h’ in a range of about 250 micrometer and 300 micrometer. The distance ‘x’ between the extreme optical fibres in the flexible optical fibre ribbon 100 is about 1310 micrometer. The flexible optical fibre ribbon 100 has a planarity of about 50 micrometer.

[0050] In yet another embodiment of the present disclosure, the flexible optical fibre ribbon 100 includes 8 optical fibres. The flexible optical fibre ribbon 100 has a width ‘w’ of about 2172 micrometer. The flexible optical fibre ribbon 100 has a height ‘h’ in a range of about 250 micrometer and 300 micrometer. The distance ‘x’ between the extreme optical fibres in the flexible optical fibre ribbon 100 is about 1834 micrometer. The flexible optical fibre ribbon 100 has a planarity of about 50 micrometer.

[0051] In yet another embodiment of the present disclosure, the flexible optical fibre ribbon 100 includes 12 optical fibres. The flexible optical fibre ribbon 100 has a width ‘w’ of about 3220 micrometer. The flexible optical fibre ribbon 100 has a height ‘h’ in a range of about 250 micrometer and 300 micrometer. The distance ‘x’ between the extreme optical fibres in the flexible optical fibre ribbon 100 is about 2882 micrometer. The flexible optical fibre ribbon 100 has a planarity of about 75 micrometer.

[0052] The flexible optical fibre ribbon has numerous advantages over the prior art. The flexible optical fibre ribbon enables mass fusion splicing with reduction in optical fibre ribbon dimensions. In addition, the flexible optical fibre ribbon is compatible for fusion with conventional optical fibre ribbons with 250 micron optical fibres. Further, the flexible optical fibre ribbon can be rolled into a circular shape which reduces overall diameter of an optical fibre cable in which it is installed. Furthermore, the flexible optical fibre ribbon has small dimension which reduces overall weight of the optical fibre cable in which the flexible optical fibre ribbon is installed.

[0053] The foregoing descriptions of specific 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.

,CLAIMS:STATEMENT OF CLAIMS
We claim:
1. A flexible optical fibre ribbon (100) comprising:
a plurality of optical fibres (102) arranged in parallel, wherein the plurality of optical fibres (102) are corrugated, wherein each optical fibre of the plurality of optical fibres (102) has diameter in range of about 210 ± 5 micron; and
a matrix material (104) enclosing the plurality of optical fibres (102), wherein the matrix material (104) is made of a flexible material, wherein the matrix material (104) has a pre-defined desirable flexibility, wherein the matrix material (104) imparts flexibility to the flexible optical fibre ribbon (100),
wherein the flexible optical fibre ribbon (100) has height ‘h’ in range of about 0.25 millimeter and 0.3 millimeter, wherein the flexible optical fibre ribbon (100) has width ‘w’ in range of about 1220 micrometer to 3220 micrometer, wherein the flexible optical fibre ribbon (100) is easy to roll in desired direction.

2. The flexible optical fibre ribbon (100) as claimed in claim 1, wherein the flexible optical fibre ribbon (100) has a fibre to fibre pitch (dpitch) of about 0.25 millimeter to 0.255 millimeter when the each optical fibre of the plurality of optical fibres (102) has a diameter of about 210 ± 5 micron.

3. The flexible optical fibre ribbon (100) as claimed in claim 1, wherein the flexible optical fibre ribbon (100) has a distance ‘x’ between extreme fibres in the flexible optical fibre ribbon (100) is in a range of about 786 micrometer to 2882 micrometer.

4. The flexible optical fibre ribbon (100) as claimed in claim 1, wherein the flexible optical fibre ribbon (100) has planarity in a range of about 50 micrometer and 75 micrometer.

5. The flexible optical fibre ribbon (100) as claimed in claim 1, wherein the flexible optical fibre ribbon (100) is compatible for fusion splicing with an existing standard 250 micron fibre ribbon.

6. The flexible optical fibre ribbon (100) as claimed in claim 1, wherein the plurality of optical fibres (102) in the flexible optical fibre ribbon (100) is in range of 4 to 12.

7. The flexible optical fibre ribbon (100) as claimed in claim 1, wherein the matrix material (104) is of curable UV acrylate.

8. Dated this 17th Day of June, 2019
Signature:
Arun Kishore Narasani (IN/PA/1049)