Software programmable flexible and dynamic optical transceivers
An optical transceiver includes an electro-optic front end; a digital-to-analog converter (DAC) and an analog-to-digital converter (ADC) connected to the electro-optic front end; and one or more Field Programmable Gate Arrays (FPGAs) connected to the DAC and the ADC, wherein the one or more FPGAs are connected to one or more of a local memory and a remote storage for loading FPGA bit files, and wherein the one or more FPGAs are loaded with a forward error correction (FEC) encoding app and a FEC decoding app. The FEC encoding app and the FEC decoding app can be selected based on any of an optical application and a standard compliance requirement.
1. An optical transceiver comprising:
an electro-optic front end;
a digital-to-analog converter (DAC) and an analog-to-digital converter (ADC) connected to the electro-optic front end; and
one or more Field Programmable Gate Arrays (FPGAs) and a Digital Signal Processor (DSP) connected to the DAC and the ADC,
wherein the one or more FPGAs are connected to one or more of a local memory and a remote storage for loading FPGA bit files for DSP applications, and
wherein the one or more FPGAs and the DSP processor are collectively configured to implement the DSP applications such that (i) the one or more FPGAs are loaded with a first set of the DSP applications including a forward error correction (FEC) encoding app and a FEC decoding app each being an app loaded in the one or more FPGAs selected from a plurality of apps for different FEC schemes, and (ii) the DSP is configured to perform a second set of the DSP applications including modulation/demodulation functions.
2. The optical transceiver of claim 1 , wherein the FEC encoding app and the FEC decoding app are a FEC scheme of the different FEC schemes selected based on any of an optical application and a standard compliance requirement.
3. The optical transceiver of claim 2 , wherein the optical application is based on distance.
4. The optical transceiver of claim 1 , wherein the FEC decoding app is one of hard decision and soft decision.
5. The optical transceiver of claim 1 , wherein the one or more FPGAs are loaded with a signal interleaving/deinterleaving app for use with the FEC encoding app and the FEC decoding app.
6. The optical transceiver of claim 1 , wherein the one or more FPGAs are loaded with an encryption and key management app for encrypting and decrypting a signal.
7. The optical transceiver of claim 1 , wherein the one or more FPGAs are loaded with a training sequence insertion and detection app configured to insert known sequences in a transmitted signal and to check demodulation/decoding against received known sequences.
8. The optical transceiver of claim 1 , wherein the one or more FPGAs are loaded with a framing app for framing and de-framing with overhead according to a standardized framing technique.
9. The optical transceiver of claim 1 , wherein the one or more FPGAs are loaded with a packet processing app.
10. The optical transceiver of claim 1 , wherein the one or more FPGAs are loaded with a pseudorandom binary sequence (PRBS) app for generation of testing sequences.
11. A method implemented in an optical transceiver that includes an electro-optic front end, a digital-to-analog converter (DAC) and an analog-to-digital converter (ADC) connected to the electro-optic front end, and one or more Field Programmable Gate Arrays (FPGAs) and a Digital Signal Processor (DSP) connected to the DAC and the ADC, the method comprising steps of:
connecting the one or more FPGAs to one or more of a local memory and a remote storage for loading FPGA bit files for DSP applications;
loading the one or more FPGAs with a first set of the DSP applications including a forward error correction (FEC) encoding app and a FEC decoding app each being an app loaded in the one or more FPGAs selected from a plurality of apps for different FEC schemes; and
performing modulation/demodulation functions with the DSP, wherein the one or more FPGAs and the DSP processor are collectively configured to implement the DSP applications such that the DSP is configured perform a second set of the DSP applications including the modulation/demodulation functions, and FEC encoding and decoding with the one or more FPGAs.
12. The method of claim 11 , wherein the FEC encoding app and the FEC decoding app are a FEC scheme of the different FEC schemes selected based on any of an optical application and a standard compliance requirement.
13. The method of claim 12 , wherein the optical application is based on distance.
14. The method of claim 11 , wherein the FEC decoding app is one of hard decision and soft decision.
15. The method of claim 11 , wherein the steps further include
loading the one or more FPGAs with a signal interleaving/deinterleaving app for use with the FEC encoding app and the FEC decoding app.
16. The method of claim 11 , wherein the steps further include
loading the one or more FPGAs with an encryption and key management app for encrypting and decrypting a signal.
17. The method of claim 11 , wherein the steps further include
loading the one or more FPGAs with a training sequence insertion and detection app configured to insert known sequences in a transmitted signal and to check demodulation/decoding against received known sequences.
18. The method of claim 11 , wherein the steps further include
loading the one or more FPGAs with a framing app for framing and de-framing with overhead according to a standardized framing technique.
19. The method of claim 11 , wherein the steps further include
loading the one or more FPGAs with a packet processing app.
20. The method of claim 11 , wherein the steps further include
loading the one or more FPGAs with a pseudorandom binary sequence (PRBS) app for generation of testing sequences.