DESC:

TECHNICAL FIELD

The present disclosure relates to passive optical network architecture. In particular, the present disclosure relates to Gigabit Passive Optical Network (GPON) ring architecture.

BACKGROUND

As in traditional GPON systems, the fiber cuts or any other situation which causes the break in connectivity between optical line terminal (OLT) and optical network terminal (ONT), then due to no end to end protection all services will be halted. There need to be a solution to avoid the breaking of connectivity i.e. breaking in communication between the OLT and the ONT due to fiber cuts.

Hence, there exists a need to provide a GPON ring architecture which manages performance and prevents failures due to fiber cuts in any GPON architecture.

SUMMARY

The shortcomings of the prior art are overcome and additional advantages are provided through the present disclosure. Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.

In one embodiment, the present disclosure provides a gigabit passive optical network (GPON) ring architecture. The GPON ring architecture comprising one or more optical line terminal (OLT), each of the one or more OLT comprising plurality of input/ output (I/O) ports. The each of the plurality of I/O ports of the OLT is a small form factor pluggables (SFP). The GPON ring architecture also comprises a plurality of optical network terminals (ONTs) in communication with one of the one or more OLTs through one of a first optical fibre link and a second optical fiber link. Each of the plurality of ONTs comprises a control unit to detect failure in one of the first optical fiber link and second optical fiber link, and switch to one of the second optical link and a first optical fiber link after detecting failure in one of the first optical fiber link and a second optical fiber link respectively. The first optical fiber link and the second optical fiber link are configured as ring shaped communication channels connected to a corresponding one of a plurality of I/O port of the one or more OLTs. Further, the GPON ring architecture comprise plurality of optical splitters to distribute optical signals from the one or more OLT to the plurality of ONTs through one of the first optical fiber link and second optical fiber link.

In an embodiment, the present disclosure provides to an optical network terminal (ONT). The ONT comprises a pair of diplexers, wherein each of the pair of diplexers converts received optical signals coming from a first optical fiber link and a second optical fiber link into electrical signals and convert electrical signals into optical signals to transmit over the first optical fiber link and the second optical fiber link. Each of the pair of diplexer is connected to one of first optical fiber link and second optical fiber link. Also, the ONT comprises current mode logic (CML) module to receive electrical signals from the pair of diplexers and output one of the received electrical signals from the pair of diplexer. Further, the ONT comprises a control unit in communication with a pair of diplexer and the CML module through an inter integrated circuit (I2C) bus. The control unit dynamically switches the connectivity of the ONT with one of the first optical fiber link and the second optical fiber link based on the output of the CML module. The control unit detects failure in one of the first optical fiber link and the second optical fiber link based on the output of the CML logic.

In one embodiment, the present disclosure provides a gigabit passive optical network (GPON) ring architecture. The GPON ring architecture comprising one or more optical line terminal (OLT), each of the one or more OLT comprising plurality of input/ output (I/O) ports. Also, the GPON ring architecture comprises a plurality of optical network terminals (ONTs) in communication with one of the one or more OLTs through one of a first optical fibre link and a second optical fiber link. The each of the plurality of ONTs comprises a pair of diplexers, wherein each of the pair of diplexers converts received optical signals coming from a first optical fiber link and a second optical fiber link into electrical signals and convert electrical signals into optical signals to transmit over the first optical fiber link and the second optical fiber link. Each of the pair of diplexer is connected to one of first optical fiber link and second optical fiber link. Also, the ONT comprises current mode logic (CML) module to receive electrical signals from the pair of diplexers and output one of the received electrical signals from the pair of diplexer. Further, the ONT comprises a control unit in communication with a pair of diplexer and the CML module through an inter integrated circuit (I2C) bus. The control unit dynamically switches the connectivity of the ONT with one of the first optical fiber link and the second optical fiber link based on the output of the CML module. The control unit detects failure in one of the first optical fiber link and the second optical fiber link based on the output of the CML logic. Further, the GPON ring architecture comprises plurality of optical splitters to distribute optical signals from the one or more OLT to the plurality of ONTs through one of the first optical fiber link and second optical fiber link.

In one embodiment, the present disclosure provides a method of communication in a gigabit passive optical network (GPON) ring architecture. The method comprising receiving communication data from at least one of optical line terminals (OLTs) through one of a first optical fiber link and a second optical fiber link by an optical network terminal (ONT). Also, the method comprises detecting the received communication data by the control unit after the received communication data being converted into electrical signals by current mode logic (CML) module of the ONT. Further, dynamically switching the connectivity between the ONT with one of the first optical fiber link and second optical fiber link based on the CML module output data, wherein after detecting failure in one of the first optical fiber link and the second optical fiber link based on the output of the CML logic the control unit switches the receiving of communication data from one of the second optical link and a fiber optical fiber link to the first optical fiber link and a second optical fiber link respectively. The first optical fiber link and second optical fiber link are configured as ring shaped communication channels.

The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects and features described above, further aspects, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

The novel features and characteristic of the disclosure are set forth in the appended claims. The embodiments of the disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying drawings. One or more embodiments are now described, by way of example only, with reference to the accompanying drawings.

Figure 1 illustrates an exemplary Gigabit Passive Optical Network (GPON) Ring Architecture, in accordance with an embodiment of the present disclosure;

Figure 2 illustrates an internal block diagram of OLT (Optical line termination) in accordance with an embodiment of the present disclosure;

Figure 3 illustrates an optical power distribution in the GPON ring architecture, in accordance with an embodiment of the present disclosure;

Figure 4 illustrates an internal block diagram of ONT (optical network termination) in the GPON ring architecture, in accordance with an embodiment of the present disclosure;

Figure 5 shows an embodiment illustrating a fibre cut at near the optical power distribution of the GPON ring architecture, in accordance with an example embodiment of the present disclosure;

Figure 6 shows an embodiment illustrating a fibre cut in the GPON ring architecture, in accordance with an example embodiment of the present disclosure;

Figure 7 shows an embodiment illustrating a fibre cut in middle stage of optical power distribution of the GPON ring architecture, in accordance with an example embodiment of the present disclosure; and

Figure 8 shows an embodiment illustrating a fibre cut at final stage of optical power distribution in the GPON ring architecture, in accordance with an example embodiment of the present disclosure;

The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION

The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the detailed description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which form the subject of the claims of the disclosure. It should be appreciated by those skilled in the art that the conception and specific aspect disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the disclosure as set forth in the appended claims. The novel features which are believed to be characteristic of the disclosure, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.
The present disclosure provides Gigabit Passive Optical Network (GPON) ring architecture with plurality of optical fibers for protecting against fibre cuts. The architecture provides cost effective, protocol agnostic solution with protection for GPON system in a long run.

In one embodiment, the present disclosure provides a gigabit passive optical network (GPON) ring architecture. The GPON ring architecture comprising one or more optical line terminal (OLT), each of the one or more OLT comprising plurality of input/ output (I/O) ports. The each of the plurality of I/O ports of the OLT is a small form factor pluggables (SFP). The GPON ring architecture also comprises a plurality of optical network terminals (ONTs) in communication with one of the one or more OLTs through one of a first optical fibre link and a second optical fiber link. Each of the plurality of ONTs comprises a control unit to detect failure in one of the first optical fiber link and second optical fiber link, and switch to one of the second optical link and a first optical fiber link after detecting failure in one of the first optical fiber link and a second optical fiber link respectively. The first optical fiber link and the second optical fiber link are configured as ring shaped communication channels connected to a corresponding one of a plurality of I/O port of the one or more OLTs. Further, the GPON ring architecture comprise plurality of optical splitters to distribute optical signals from the one or more OLT to the plurality of ONTs through one of the first optical fiber link and second optical fiber link.

In another embodiment, the present disclosure provides a gigabit passive optical network (GPON) ring architecture. The GPON ring architecture comprising one or more optical line terminal (OLT), each of the one or more OLT comprising plurality of input/ output (I/O) ports. Also, the GPON ring architecture comprises a plurality of optical network terminals (ONTs) in communication with one of the one or more OLTs through one of a first optical fibre link and a second optical fiber link. The each of the plurality of ONTs comprises a pair of diplexers, wherein each of the pair of diplexers converts received optical signals coming from a first optical fiber link and a second optical fiber link into electrical signals and convert electrical signals into optical signals to transmit over the first optical fiber link and the second optical fiber link. Each of the pair of diplexer is connected to one of first optical fiber link and second optical fiber link. Also, the ONT comprises current mode logic (CML) module to receive electrical signals from the pair of diplexers and output one of the received electrical signals from the pair of diplexer. Further, the ONT comprises a control unit in communication with a pair of diplexer and the CML module through an inter integrated circuit (I2C) bus. The control unit dynamically switches the connectivity of the ONT with one of the first optical fiber link and the second optical fiber link based on the output of the CML module. The control unit detects failure in one of the first optical fiber link and the second optical fiber link based on the output of the CML logic. Further, the GPON ring architecture comprises plurality of optical splitters to distribute optical signals from the one or more OLT to the plurality of ONTs through one of the first optical fiber link and second optical fiber link.

One embodiment of the present disclosure provides a method of communication in a gigabit passive optical network (GPON) ring architecture. The method comprising receiving communication data from at least one of optical line terminals (OLTs) through one of a first optical fiber link and a second optical fiber link by an optical network terminal (ONT). Also, the method comprises detecting the received communication data by the control unit after the received communication data being converted into electrical signals by current mode logic (CML) module of the ONT. Further, dynamically switching the connectivity between the ONT with one of the first optical fiber link and second optical fiber link based on the CML module output data, wherein after detecting failure in one of the first optical fiber link and the second optical fiber link based on the output of the CML logic the control unit switches the receiving of communication data from one of the second optical link and a fiber optical fiber link to the first optical fiber link and a second optical fiber link respectively. The first optical fiber link and second optical fiber link are configured as ring shaped communication channels.

Figure 1 illustrates an exemplary embodiment of GPON ring architecture 100 comprising two optical fibers 103a, 103b hereafter referred as 103, which are terminated on plurality of GPON (Gigabit Passive Optical Network) ONTs (Optical network terminations or terminals) 102. Each of plurality of ONTs 102 gets connected to each other to form a ring type topology. The formed ring type topology is unlike traditional GPON system where only one optical fiber terminated on GPON ONTs. At any predefined time, one ONT 102 is logically connected to GPON OLT (Optical line terminations or terminals) 101 using any one of two available optical fibers. In case of fiber cut or because of any other circumstances which leads to the break in connectivity between the OLT 101 and ONT 102 then, the ONT 102 will automatically switch to another available optical fiber. Thereby, all the services will be restored. Thus, GPON Ring architecture 100 provides end to end protection for fiber cuts. As in traditional GPON system if fiber cuts or any other situation causes break in connectivity between the OLT and the ONT. Then, due to no end to end protection all services will be halted. Ring architecture will be proved very effective method to provide resilience for GPON architecture due to fiber cut problem. The beauty of this architecture is that it can provide protection in load sharing mode.

In one embodiment, as shown in the figure 1 an ellipse A illustrates the optical fiber termination points for
OLT which are small form factor pluggable (SFPs) modules. Figure 2 illustrates a connectivity diagram of the SFPs present in the OLT with the optical fibers or optical links of the GPON ring architecture. The SFP modules convert the electrical signals coming from control unit or main processor of the OLT, which has to be transmitted on to the GPON into optical signals. Also, the SFP modules convert optical signals coming from optical interface of the GPON into electrical signal and provided to the main processor of the OLT.

Figure 3 illustrates an optical power distribution in the GPON ring architecture, in accordance with an embodiment of the present disclosure. As shown in the figure 1, ellipse marked B and C represents the optical passive splitter which is shown separately in figure 3. The optical passive splitter or beam splitter or fiber optic splitter or splitter is based on a quartz substrate of integrated waveguide optical power distribution device. The optical network system needs optical signals coupled to the branch distribution, which requires the fiber optic splitter. The splitter is one of the important optical fiber devices in the optical fiber link which comprises many input terminals and many output terminals (1X16, 1x32, 2X32 etc.). Figure 3 shows optical power distribution with use of multiple 1Xn and 1Xm splitters. The splitter distributes optical signals transmitted through the OLT in a number of optical signals depending on split ratio and distance to be covered by optical signals.

In an exemplary embodiment, the present disclosure provides to an optical network terminal (ONT) 102. The ONT comprises a pair of diplexers 403, wherein each of the pair of diplexers 403 converts received optical signals coming from a first optical fiber link 103a and a second optical fiber link 103b into electrical signals and convert electrical signals into optical signals to transmit over the first optical fiber link 103a and the second optical fiber link 103b. Each of the pair of diplexer 403 is connected to one of first optical fiber link 103a and second optical fiber link 103b. Also, the ONT 102 comprises current mode logic (CML) module 402 to receive electrical signals from the pair of diplexers 403 and output one of the received electrical signals from the pair of diplexer 403. Further, the ONT 102 comprises a control unit or a processor 401 in communication with a pair of diplexer 403 and the CML module 402 through an inter integrated circuit (I2C) bus 406. The control unit 401 dynamically switches the connectivity of the ONT 102 with one of the first optical fiber link 103a and the second optical fiber link 103b based on the output of the CML module 402. The control unit 401 detects failure in one of the first optical fiber link 103a and the second optical fiber link 103b based on the output of the CML module 402 logic.

Figure 4 illustrates an internal block diagram of an ONT (optical network terminal) 102 in the GPON ring architecture 100, in accordance with an embodiment of the present disclosure. Each of the plurality of ONTs 102 is connected to at least one of the OLT 101 via two fiber links or PON (passive optical network) links i.e. PON1 103a , PON2 103b (herein after 103a and 103b together are referred as 103). The two PON links 013 terminate at the optical interfaces of the ONT, which are diplexers 403. The pair of diplexers 403 of the ONT converts the electrical signal coming from control unit or system on chip (SOC) 401 in to optical signal and sends the converted optical signal over the fiber links 103. Also, the diplexers 403 convert optical signal coming from PON fiber links 103 in to electrical signal, and provide the converted electrical signal the SOC 401. The ONT 102 comprises current mode logic (CML) Multiplexer (Mux)/Demultiplexer (Demux) or CML module 402, which used in between the SOC 401 and the diplexers 403. The CML Mux/Demux 402 is an asynchronous single lane 2:1 switch with three differential CML inputs and three differential CML outputs. The CML Mux/Demux 402 consists of a 2:1 multiplexer and 1:2 de-multiplexer. Each port of the diplexer offers two levels of input equalization and four levels of output pre-emphasis. The CML Mux/Demux 402 provides data connectivity between the SOC 401 and the diplexers 403.

One embodiment of the present disclosure is about connectivity of single optical fiber link through the CML Mux/ Demux 402 with SOC 401 of the ONT 102. The CML Mux/Demux 402 allows connectivity of only one diplexer 403 with SOC 401 at an instant of time. The diplexer 403 serves as the logical connectivity between the ONT 102 and OLT 101, which is decided by control input of CML Mux 402. However, the control input for the CML Mux 402 is generated by the SOC 401 of the ONT 102. Whenever, the SOC 401 detects loss of receiver signal, which may be due to fiber cut or any other circumstances which lead to the break in connectivity between the OLT 101 and the ONT 102, i.e. either from diplexer 1 or diplexer 2 403, the SOC 401 will be interrupted by the interrupt signal. The interrupted signal is processed by the SOC 401 to generate an appropriate control input for CML Mux 402. The CML Mux 402 will switch the connectivity from diplexer 1 to diplexer 2 or diplexer 2 to diplexer 1 depending on current state of the interrupt signal. Thereafter, all services will be restored for the communication between the OLT 101 and the ONT 102.

In one embodiment, the ONT comprises a quad bi-directional translating switch 404 controlled through an inter integrated circuit (I2C) bus 406. The I2C bus 406 is used to provide I2C 404 connectivity to diplexers 403 and CML Mux/ Demux 402. The Serial Clock (SCL)/ Serial Data Line (SDA) upstream pair fans out to four downstream pairs or channels. Each of the SCL/SDA channel can be selected based on the contents of the programmable control register. The programmable control register is written after the I2C switch 404 has been addressed. The two LSBs of the control byte are used to determine which channel is to be selected. When a channel is selected, the channel becomes active after a stop condition has been placed on the I2C bus 406. The I2C interface signals (SCL, SDA) coming from the SOC 401 are de-multiplexed by I2C Mux/Demux and then connected to diplexers 403 and CML Mux 402. Both the diplexers and the CML Mux 402 work as slave I2C devices. The I2C connectivity for CML Mux 402 is optional, but is only required when it is needful to have an additional control. Each of the ONT further comprises an additional fan out buffer, which is used to distribute the transmitter enable signal generated by SOC 401 to the diplexers 403. The diplexers 403 transmits signals during the valid transmit enable (Burst enable) signal only.

Figure 5 illustrates managing connectivity of GPON ring architecture in case of failure in connectivity due to fiber cut at beginning stage optical power distribution of the OLT, in accordance with an embodiment of the present disclosure. As shown in figure 5, if there is a break in connectivity at very initial stage of power distribution, then all the ONTs logically connected with PON1 i.e. first optical fiber link will detect loss of receiver signal and diplexer will generate loss of signal (LOS) interrupt for SOC. After processing LOS interrupt signal, the SOC will generate an appropriate control input to the CML Mux, so that, the CML Mux switches data connectivity from PON1 to PON2 i.e. from the optical fiber link 1 to the optical fiber link 2. The switching of optical fiber link message is conveyed to all the OLTs, thereby restoring all the services.

Figure 6 illustrates managing connectivity of GPON ring architecture in case of failure in connectivity due to fiber cut in middle stage of optical power distribution of the OLT, in accordance with another embodiment of the present disclosure. As shown in figure 6, there is an optical fiber cut or breakage in connectivity in middle stage of the optical power distribution, which is shown using optical splitters in figure 7. All the ONTs logically connected on right side of first optical fiber PON1 cut position shown in figure 7, will detect loss of receiver signal. The diplexer of each of the ONTs which have detected the fiber cut will generate loss of signal (LOS) interrupt for the system on chip (SOC). After processing the LOS interrupt signal, the SOC will generate a predetermined control input for the CML Mux, which will switch data connectivity from first optical fiber PON1 to second optical fiber PON2. This message is conveyed the OLT that detected the fiber cut, thereafter all the services will be restored.

Figure 8 illustrates managing connectivity of GPON ring architecture in case of failure in connectivity due to fiber cut at final stage of optical power distribution near ONTs, in accordance with another embodiment of the present disclosure. As shown in figure 8, if there is a break in connectivity at the final stage of optical power distribution or just before the ONT, then the corresponding ONT will detect loss of receiver signal and an LOS interrupt will be generated for the SOC. After processing the LOC interrupt, the SOC will generate a predetermined control input for CML Mux which will switch data connectivity from optical fiber 1 i.e. PON1 to optical fiber 2 PON2 connected to the ONT. The switching of the optical fiber 1 to optical fiber 2 i.e. from PON1 to PON2 message is conveyed to the OLT. Thereby, all the services of the ONT will be restored.

Finally, the language used in the specification has been principally selected for readability and instructional purposes, and it may not have been selected to delineate or circumscribe the inventive subject matter. It is therefore intended that the scope of the invention be limited not by this detailed description, but rather by any claims that issue on an application based here on. Accordingly, the disclosure of the embodiments of the invention is intended to be illustrative, but not limiting, of the scope of the invention, which is set forth in the following claims.

With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.

In addition, where features or aspects of the disclosure are described in terms of Markush groups, those skilled in the art will recognize that the disclosure is also thereby described in terms of any individual member or subgroup of members of the Markush group.

While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

CLAIMS:

We claim:

1. A gigabit passive optical network (GPON) ring architecture comprising:

one or more optical line terminal (OLT), each of the one or more OLT comprising plurality of input/ output (I/O) ports;

plurality of optical network terminals (ONTs) in communication with one of the one or more OLTs through one of a first optical fibre link and a second optical fiber link, each of the plurality of ONTs comprises a control unit to detect failure in one of the first optical fiber link and second optical fiber link, and switch to one of the second optical link and a first optical fiber link after detecting failure in one of the first optical fiber link and a second optical fiber link respectively, the first optical fiber link and the second optical fiber link are configured as ring shaped communication channels connected to a corresponding one of a plurality of I/O port of the one or more OLTs; and

plurality of optical splitters to distribute optical signals from the one or more OLT to the plurality of ONTs through one of the first optical fiber link and second optical fiber link.

2. The GPON ring architecture as claimed in claim 1, wherein each of the plurality of I/O ports of the OLT is a small form factor pluggables (SFP).

3. The GPON ring architecture as claimed in claim 2, wherein the SFP converts optical signals received from the plurality of ONTs on the first optical fiber link and the second optical fiber link into electrical signals.

4. The GPON ring architecture as claimed in claim 2, wherein the SFP convert electrical signals of the OLT into optical signals to transmit over the first optical fiber link and the second optical fiber link.

5. The GPON ring architecture as claimed in claim 1, wherein each of the plurality of ONTs comprises a pair of diplexers to convert received optical signals coming from one of the first optical fiber link and second optical fiber link into electrical signals and convert electrical signals into optical signals to transmit over the first optical fiber link and second optical fiber link.

6. The GPON ring architecture as claimed in claim 1, each of the plurality of ONTs comprises current mode logic (CML) module to receive inputs from the pair of diplexers and generate an output.

7. The GPON ring architecture as claimed in claim 1, each of the plurality of ONTs comprises a control unit in communication with a pair of diplexer and the CML module through an inter integrated circuit (I2C) bus, the control unit dynamically switch the connectivity between the ONT with one of the first optical fiber link and the second optical fiber link based on the generated output by the CML module.

8. A gigabit passive optical network (GPON) ring architecture comprising:

one or more optical line terminal (OLT), each of the one or more OLT comprising plurality of input/ output (I/O) ports;

plurality of optical network terminals (ONTs) in communication with one of the one or more OLTs through a first optical fibre link and second optical fiber link, each of the plurality of ONTs comprises:

a pair of diplexers, each of the pair of diplexers converts received optical signals coming from a first optical fiber link and a second optical fiber link into electrical signals and convert electrical signals into optical signals to transmit over the first optical fiber link and the second optical fiber link, each of the pair of diplexer is connected to one of first optical fiber link and second optical fiber link;
current mode logic (CML) module to receive electrical signals from the pair of diplexers and output one of the received electrical signals from the pair of diplexer; and

a control unit in communication with a pair of diplexer and the CML module through an inter integrated circuit (I2C) bus, the control unit dynamically switches the connectivity between the ONT with one of the first optical fiber link and second optical fiber link based on the output data from the CML module, the control unit dynamically switches the connectivity of the ONT with one of the first optical fiber link and the second optical fiber link based on the output of the CML module, wherein the control unit detects failure in one of the first optical fiber link and the second optical fiber link based on the output of the CML logic and switch to one of the second optical link and a fiber optical fiber link after detecting failure in one of the first optical fiber link and a second optical fiber link respectively, said first and second optical fiber links are configured as ring shaped communication channels connected to corresponding one of a plurality of I/O port of the one or more OLTs; and

plurality of optical splitters to distribute optical signals from the one or more OLT to the plurality of ONTs through one of the first optical fiber link and second optical fiber link.

9. The GPON ring architecture as claimed in claim 11, wherein each of the plurality of I/O ports of the OLT is a small form factor pluggables (SFP).

10. The GPON ring architecture as claimed in claim 12, wherein the SFP converts optical signals received from the plurality of ONTs on the first optical fiber link and the second optical fiber link into electrical signals.

11. The GPON ring architecture as claimed in claim 12, wherein the SFP convert electrical signals of the OLT into optical signals to transmit over the first optical fiber link and the second optical fiber link.

12. A method of communication in a gigabit passive optical network (GPON) ring architecture, said method comprising:

receiving communication data from at least one of optical line terminals (OLTs) through one of a first optical fibre link and a second optical fiber link by an optical network terminal (ONT);

detecting the received communication data by the control unit after the received communication data being converted into electrical signals by current mode logic (CML) module of the ONT; and

dynamically switching the connectivity between the ONT with one of the first optical fiber link and second optical fiber link based on the CML module output data, wherein after detecting failure in one of the first optical fiber link and the second optical fiber link based on the output of the CML logic the control unit switches the receiving of communication data from one of the second optical link and a fiber optical fiber link to the first optical fiber link and a second optical fiber link respectively;

wherein the first optical fiber link and second optical fiber link are configured as ring shaped communication channels.