40, 50 and 100 Gb/s optical transceivers/transponders in 300pin and CFP MSA modules

1. An N-carrier optical wavelength division modulator (WDM) transponder/transceiver, comprising:

at least one pair of 10 Gb/s optical transmitters whose wavelengths are within a 50 or 100 GHz ITU-T window; and

an opto-electronic control circuit driving each optical transmitter, wherein said opto-electronic control circuit includes a multiplexer outputting a control signal, wherein each optical transmitter is driven by the electrical control signal output by the opto-electronic control circuit according to a band-limited optical duo binary modulation technique at 20˜28 Gb/s, wherein said opto-electronic control current further comprises:

at least one electronic device to convert a signal from an interface to N lanes of 20˜28 Gb/s differentially-encoded NRZ signals;

N driver amplifiers to amplify the N lanes of 20˜28 Gb/s NRZ signals, respectively, wherein the group delay variation of each amplifier is low enough so as not to distort the 20˜28 Gb/s NRZ signals; and

N electronic low-pass filters receiving the amplified signals and serving as duobinary encoders; and

wherein said at least one pair of 10 Gb/s optical transmitter further comprise:

N 10 Gb/s optical transmitters converting the encoded signals into optical signals having N different wavelengths; and

an optical combiner to combine the N wavelengths generated from the N 10 Gb/s optical transmitters, and

wherein said

electronic device has sufficient electronic buffer to manage a skew between the 20˜28 Gb/s lanes.

2. An N-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 1 , wherein the 10 Gb/s optical transmitters contains a standard or miniaturized integrated tunable laser assembly (ITLA).

3. An N-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 1 , wherein the 10 Gb/s optical transmitters contains a tunable or fixed-wavelength transmitter optical subassembly (TOSA).

4. An N-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 1 , wherein each tunable 10 Gb/s optical transmitter contains a zero-chirp or pre-chirped lithium-niobate, or InP, or polymer-based optical modulator.

5. An N-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 1 , wherein the optical combiner is a polarization maintaining beam combiner.

6. An N-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 1 , wherein the optical combiner is an optical coupler.

7. An N-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 1 , further comprising at least one pair of 20˜28 Gb/s optical receivers, wherein each 20˜28 Gb/s receiver contains at least one 20˜28 Gb/s electronic dispersion compensator (EDC).

8. An N-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 1 , wherein the at least one electronic output device that converts N lanes of 20˜28 Gb/s NRZ signals to SFI5.1 or Nx10 G interface contains N 20˜28 Gb/s EDCs.

9. A N-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 1 , wherein the entire transponder/transceiver is contained within one of a 300-pin MSA package or a CFP MSA package.

10. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver, comprising:

at least one electronic input device to convert a signal from an SFI5.1 interface to two lanes of 20˜28 Gb/s differentially-encoded NRZ signals;

one pair of driver amplifiers to amplify the two lanes of 20˜28 Gb/s NRZ signals, respectively, wherein the group delay variation of each amplifier is low enough so as not to distort the 20˜28 Gb/s NRZ signals;

one pair of electronic low-pass filters receiving the amplified signals and serving as duobinary encoders;

one pair of tunable 10 Gb/s optical transmitters converting the encoded signals into optical signals having two different wavelengths;

an optical combiner to combine the two wavelengths generated from the two tunable 10 Gb/s optical transmitters;

an optical wavelength slicer to separate the two wavelengths received from the transmission line;

one pair of 20˜28 Gb/s optical receivers; and

at least one electronic output device to convert two lanes of 20˜28 Gb/s NRZ signals to an SFI5.1 interface.

11. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 10 , wherein the electronic device has sufficient electronic buffer to manage skew between the two 20˜28 Gb/s lanes.

12. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 10 , wherein the wavelength slicer is a 1 input×2 output cyclic array-waveguide with a cycle of 50 or 100 GHz.

13. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver, comprising:

at least one electronic input device to convert 4×10 Gb/s XFI interface to two lanes of 20˜28 Gb/s differentially-encoded NRZ signals;

one pair of driver amplifiers to amplify the two lanes of 20˜28 Gb/s NRZ signals, respectively, wherein the group delay variation of each amplifier is low enough so as not to distort the 20˜28 Gb/s NRZ signals;

one pair of electronic low-pass filters receiving the amplified signals and serving as duobinary encoders;

one pair of tunable 10 Gb/s optical transmitters converting the encoded signals into optical signals having two different wavelengths;

an optical combiner to combine the two wavelengths generated from the two tunable 10 Gb/s optical transmitters;

an optical wavelength slicer to separate the two wavelengths received from the transmission line;

one pair of 20˜28 Gb/s optical receivers; and

at least one electronic output device to convert two lanes of 20˜28 Gb/s NRZ signals to an SFI5.1 interface.

14. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 13 , wherein the electronic device has sufficient electronic buffer to manage skew between the two 20˜28 Gb/s lanes.

15. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 13 , wherein the channel spacing between the two optical wavelengths of the two tunable 10 Gb/s optical transmitters is between 19 and 25 GHz.

16. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver, comprising:

at least one electronic input device to convert 5×10 Gb/s XFI interface to two lanes of 27˜28 Gb/s differentially-encoded NRZ signals;

one pair of driver amplifiers to amplify the two lanes of 27˜28 Gb/s NRZ signals, respectively, wherein the group delay variation of each amplifier is low enough so as not to distort the 27˜28 Gb/s NRZ signals;

one pair of electronic low-pass filters receiving the amplified signals and serving as duobinary encoders;

one pair of tunable 10 Gb/s optical transmitters converting the encoded signals into optical signals having two different wavelengths;

an optical combiner to combine the two wavelengths generated from the two tunable 10 Gb/s optical transmitters;

an optical wavelength slicer to separate the two wavelengths received from the transmission line;

one pair of 27˜28 Gb/s optical receivers; and

at least one electronic output device to convert two lanes of 27˜28 Gb/s NRZ signals to a 5×10 Gb/s XFI interface.

17. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 16 , wherein the electronic device has sufficient electronic buffer to manage skew between the two 20˜28 Gb/s lanes.

18. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 16 , wherein the optical combiner is a polarization maintaining beam combiner.

19. A four-carrier optical wavelength division modulator (WDM) transponder/transceiver, comprising:

at least one electronic input device to convert 10×XFI interface to four lanes of 25 Gb/s differentially-encoded NRZ signals;

four driver amplifiers to amplify the four lanes of 25 Gb/s NRZ signals, respectively, wherein the group delay variation of each amplifier is low enough so as not to distort the 25 Gb/s NRZ signals;

four electronic low-pass filters receiving the amplified signals and serving as duobinary encoders;

four 10 Gb/s optical transmitters converting the encoded signals into optical signals having four different wavelengths;

an optical combiner to combine the four wavelengths generated from the four 10 Gb/s optical transmitters;

an optical wavelength slicer to separate the four wavelengths received from the transmission line;

four 25 Gb/s optical receivers; and

at least one electronic output device to convert four lanes of 25 Gb/s NRZ signals to an 10×XFI interface.

20. A four-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 19 , wherein the electronic device has sufficient electronic buffer to manage skew among the four 25 Gb/s lanes.

21. A four-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 19 , wherein the channel spacing between any two neighbor optical wavelengths of the four transmitters is up to a few nanometers.

22. A four-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 19 , wherein said optical slicer is a 1 input×4 output cyclic array-waveguide with a cycle of 50 or 100 GHz.

23. An N-carrier optical wavelength division modulator (WDM) transponder/transceiver, comprising:

at least one electronic device to convert SFI5.1 or N×XFI interface to N lanes of 10 or 20˜23 Gb/s differentially-encoded NRZ signals;

N driver amplifiers to amplify the N lanes of 10 or 20˜23 Gb/s NRZ signals, respectively, wherein the group delay variation of each amplifier is low enough so as not to distort the 10 or 20˜23 Gb/s NRZ signals;

N electronic low-pass filters receiving the amplified signals and serving as duobinary encoders;

N 10 or 20˜23 Gb/s optical transmitters converting the encoded signals into optical signals having N different wavelengths, wherein all N different wavelengths are within one of a 50 GHz window or a 100 GHz window;

N 10 or 20˜23 Gb/s optical receivers; and

at least one electronic device to convert N lanes of 10 or 20˜23 Gb/s NRZ signals back to an SFI5.1 or N×XFI interface, wherein N is an positive integer.

24. An N-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 23 , wherein the electronic device has sufficient electronic buffer to manage the skew between the N 10 or 20˜23 Gb/s lanes.

25. An N-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 23 , wherein the channel spacing between the N optical wavelengths of the N transmitters is approximately one of 12.5 GHz or 25 GHz.

26. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver, comprising:

at least one electronic input device to convert 4×XFI interface to two lanes of 20˜23 Gb/s differentially-encoded NRZ signals;

one pair of driver amplifiers to amplify the two lanes of 20˜23 Gb/s NRZ signals, respectively, wherein the group delay variation of each amplifier is low enough so as not to distort the 20˜23 Gb/s NRZ signals;

one pair of electronic low-pass filters receiving the amplified signals and serving as duobinary encoders;

one pair of tunable 10 Gb/s optical transmitters converting the encoded signals into optical signals having two different wavelengths;

one pair of 20˜23 Gb/s optical receivers; and

at least one electronic output device to convert two lanes of 20˜23 Gb/s NRZ signals back to 4×XFI interface.

27. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 26 , wherein the electronic device has sufficient electronic buffer to manage skew between the two 20˜23 Gb/s lanes.

28. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 26 , wherein the channel spacing between the two optical wavelengths of the two transmitters is 25 GHz.

29. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver, comprising:

at least one electronic input device to convert 5×XFI interface to two lanes of 27˜28 Gb/s differentially-encoded NRZ signals;

one pair of driver amplifiers to amplify the two lanes of 27˜28 Gb/s NRZ signals, respectively; the group delay variation of each amplifier is low enough so as not to distort the 27˜28 Gb/s NRZ signals;

one pair of electronic low-pass filters receiving the amplified signals and serving as duobinary encoders;

one pair of tunable 10 Gb/s optical transmitters converting the encoded signals into optical signals having two different wavelengths;

one pair of 27˜28 Gb/s optical receivers; and

at least one electronic output device to convert two lanes of 27˜28 Gb/s NRZ signals back to an 5×XFI interface.

30. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 29 , wherein the electronic device has sufficient electronic buffer to manage skew between the two 27˜28 Gb/s lanes.

31. A two-carrier optical wavelength division modulator (WDM) transponder/transceiver in accordance with claim 29 , wherein the channel spacing between the two optical wavelengths of the two transmitters is 25 GHz.