Abstract

We demonstrate a 10 wavelength, 200 GHz spaced, monolithically integrated, polarization-multiplexed, InP differential quadrature phase shift keying receiver operating at 45.6 Gb/s per wavelength. The receiver is based on a novel technique for polarization demodulation and phase tracking that does not require any external components.

© 2011 IEEE

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  1. R. Nagarajan, C. Joyner, R. Schneider, Jr.J. Bostak, T. Butrie, A. Dentai, V. Dominic, P. Evans, M. Kato, M. Kauffman, D. Lambert, S. Mathis, A. Mathur, R. Miles, M. Mitchell, M. Missey, S. Murthy, A. Nilsson, F. Peters, S. Pennypacker, J. Pleumeekers, R. Salvatore, R. Schlenker, R. Taylor, H. Tsai, M. V. Leeuwen, J. Webjorn, M. Ziari, D. Perkins, J. Singh, S. Grubb, M. Reffle, D. Mehuys, F. Kish, D. Welch, "Large-scale photonic integrated circuits," IEEE J. Sel. Top. Quantum Electron. 11, 50-65 (2005).
  2. R. Nagarajan, M. Kato, J. Pleumeekers, P. Evans, D. Lambert, A. Chen, V. Dominic, A. Mathur, P. Chavarkar, M. Missey, A. Dentai, S. Hurtt, J. Baeck, R. Muthiah, S. Murthy, R. Salvatore, S. Grubb, C. Joyner, J. Rossi, R. Schneider, M. Ziari, F. Kish, D. Welch, "Single-chip 40-channel InP transmitter photonic integrated circuit capable of aggregate data rate of 1.6 Tbit/s," Electron. Lett. 42, 771-773 (2006).
  3. R. Nagarajan, M. Kato, J. Pleumeekers, P. Evans, S. Corzine, S. Hurtt, A. Dentai, S. Murthy, M. Missey, R. Muthiah, R. Salvatore, C. Joyner, R. Schneider, Jr.M. Ziari, F. Kish, D. Welch, "InP photonic integrated circuits," IEEE J. Sel. Top. Quantum Electron. 16, 1113-1125 (2010).
  4. P. Winzer, R. Essiambre, Optical Fiber Telecommunications V B (Academic, 2008) pp. 23-93.
  5. S. Corzine, P. Evans, M. Kato, G. He, M. Fisher, M. Raburn, A. Dentai, I. Lyubomirsky, A. Nilsson, J. Rahn, R. Nagarajan, C. Tsai, J. Stewart, D. Christini, M. Missey, V. Lal, H. Dinh, A. Chen, J. Thomson, W. Williams, P. Chavarkar, S. Nguyen, D. Lambert, S. Agashe, J. Rossi, P. Liu, J. Webjorn, T. Butrie, M. Reffle, R. Schneider, M. Ziari, C. Joyner, S. Grubb, F. Kish, D. Welch, "10-Channel $\times\,$ 40 Gb/s per channel DQPSK monolithically integrated InP-based transmitter PIC," Optical Fiber Commun. Conf. (OFC)/Natl. Fiber Optic Eng. Conf. (NFOEC) San DiegoCA (2008) paper PDP18.
  6. M. Kato, P. Evans, S. Corzine, J. Gheorma, M. Fisher, M. Raburn, A. Dentai, R. Salvatore, I. Lyubomirsky, A. Nilsson, J. Rahn, R. Nagarajan, C. Tsai, B. Behnia, J. Stewart, D. Christini, M. Missey, A. Spannagel, D. Lambert, S. Agash e, P. Liu, D. Pavinski, M. Reffle, R. Schneider, M. Ziari, C. Joyner, F. Kish, D. Welch, "Transmitter PIC for 10-channel $\times\,$40 Gb/s per channel polarization-multiplexed RZ-DQPSK Modulation," Proc. Optical Fiber Commun. Conf. (OFC)/Natl. Fiber Optic Eng. Conf. (NFOEC) (2009) pp. 1-3.
  7. K. Roberts, M. O'Sullivan, K. Wu, H. Sun, A. Awadalla, D. Krause, C. Laperle, "Performance of dual-polarization QPSK for optical transport systems," J. Lightw. Technol. 27, 3546-3559 (2009).
  8. D. van den Borne, S. Jansen, E. Gottwald, Krummrich, G. Khoe, H. de Waardt, "1.6-b/s/Hz spectrally efficient transmission over 1700 km of SSMF using 40$\,\times\,$85.6-Gb/s POLMUX-RZ-DQPSK," J. Lightw. Technol. 25, 222-232 (2007).
  9. A. Gnauck, G. Charlet, P. Tran, P. Winzer, C. Doerr, J. Centanni, E. Burrows, T. Kawanishi, T. Sakamoto, K. Higuma, "25.6-Tb/s WDM transmission of polarization-multiplexed RZ-DQPSK signals," J. Lightw. Technol. 26, 79-84 (2008).
  10. M. Yagi, S. Satomi, S. Ryu, "Field trial of 160-Gb/s, polarization-division multiplexed RZ-DQPSK transmission system using automatic polarization control," Proc. Optical Fiber Commun. Conf. (OFC)/Natl. Fiber Optic Eng. Conf. (NFOEC) (2008) pp. 1-3.
  11. B. Koch, R. Noé, V. Mirvoda, D. Sandel, V. Filsinger, K. Puntsri, "40-krad/s polarization tracking in 200-Gb/s PDM-RZ-DQPSK transmission over 430 km," IEEE Photon. Technol. Lett. 22, 613-615 (2010).
  12. S. Chandrasekhar, X. Liu, A. Konczykowska, F. Jorge, J. Dupuy, J. Godin, "Direct detection of 107-Gb/s polarization-multiplexed RZ-DQPSK without optical polarization demultiplexing," IEEE Photon. Technol. Lett. 20, 1878-1880 (2008).
  13. J. Rahn, G. Goldfarb, H.-S. Tsai, W. Chen, S. Chu, B. Little, J. Hryniewicz, F. Johnson, W. Chen, T. Butrie, J. Zhang, M. Ziari, J. Tang, A. Nilsson, S. Grubb, I. Lyubomirsky, J. Stewart, R. Nagarajan, F. Kish, D. Welch, "Low-power, polarization tracked 45.6 GB/s per wavelength PM-DQPSK receiver in a 10-channel integrated module," Proc. Opt. Fiber Commun. Conf. (OFC)/Natl. Fiber Opt. Eng. Conf. (NFOEC) (2010) pp. 1-3.
  14. R. Nagarajan, M. Kato, J. Pleumeekers, D. Lambert, V. Lal, A. Dentai, M. Kuntz, J. Rahn, H. Tsai, R. Malendevich, G. Goldfarb, J. Tang, J. Zhang, T. Butrie, M. Raburn, B. Little, A. Nilsson, M. Reffle, F. Kish, D. Welch, "10 channel, 45.6 Gb/s per channel, polarization multiplexed DQPSK InP receiver photonic integrated circuit," Proc. Optical Fiber Commun. Conf. (OFC)/Natl. Fiber Optic Eng. Conf. (NFOEC) (2010) pp. 1-3.
  15. R. Alferness, "Guided-wave devices for optical communication," IEEE J. Quantum Electron. QE-17, 946-959 (1981).
  16. L. Soldano, E. Pennings, "Optical multi-mode interference devices based on self-imaging: Principles and applications," J. Lightw. Technol. 13, 615-627 (1995).
  17. L. Soldano, A. de Vreede, M. Smit, B. Verbeek, E. Metaal, F. Groen, "Mach–Zehnder interferometer polarization splitter in InGaAsP/InP," IEEE Photon. Technol. Lett. 6, 402-405 (1994).
  18. L. Augustin, J. van der Tol, R. Hanfoug, W. de Laat, M. van de Moosdijk, P. van Dijk, Y. Oei, M. Smit, "A single etch-step fabrication-tolerant polarization splitter," J. Lightw. Technol. 25, 740-746 (2007).
  19. J. van der Tol, F. Hakimzadeh, J. Pedersen, D. Li, H. van Brug, "A new short and low-loss passive polarization converter on InP," IEEE Photon. Technol. Lett. 7, 32-34 (1995).
  20. H. El-Refaei, D. Yevick, T. Jones, "Slanted-rib waveguide InGaAsP-InP polarization converters," J. Lightw. Technol. 22, 1352-1357 (2004).
  21. L. Augustin, J. van der Tol, E. Geluk, M. Smit, "Short polarization converter optimized for active-passive integration in InGaAsP-InP," IEEE Photon. Technol. Lett. 19, 1673-1675 (2007).
  22. M. Kotlyar, L. Bolla, M. Midrio, L. O'Faolain, T. Krauss, "Compact polarization converter in InP-based material," Opt. Exp. 13, 5040-5045 (2005).
  23. S. Kim, R. Takei, Y. Shoji, T. Mizumoto, "Single-trench waveguide TE-TM mode converter," Opt. Exp. 17, 11267-11273 (2009).
  24. C. van Dam, L. Spiekman, F. van Ham, F. Groen, J. van der Tol, I. Moerman, W. Pascher, M. Hamacher, H. Heidrich, C. Weinert, M. Smit, "Novel compact InP-based polarization converters using ultra short bends," Conf. Int. Photonics Res. BostonMA (1996) paper IWC5.
  25. S. Obayya, A. Rahman, K. Grattan, H. El-Mikati, "Improved design of a polarization converter based on semiconductor optical waveguide bends," Appl. Opt. 40, 5395-5401 (2001).
  26. M. Smit, C. van Dam, "PHASAR-based WDM-devices: Principles, design and applications," IEEE J. Sel. Top. Quantum Electron. 2, 236-250 (1996).
  27. K. Okamoto, "Recent progress of integrated optics planar lightwave circuits," Opt. Quantum Electron. 31, 107-129 (1999).
  28. M. Boudreau, M. Poirier, G. Yoffe, B. Pezeshki, "An integrated InP coherent receiver for 40 and 100 Gb/s telecommunications systems," Proc. Optical Fiber Commun. Conf. (OFC)/Natl. Fiber Optic Eng. Conf. (NFOEC) (2009) pp. 1-3.
  29. R. Kunkel, H.-G. Bach, D. Hoffmann, C. M. Weinert, I. Molina-Fernandez, R. Halir, "First monolithic InP-Based 90$^{\circ}$-hybrid OEIC comprising balanced detectors for 100 GE coherent frontends," Proc. Int. Conf. InP and Related Materials (2009) pp. 19.

2010 (2)

R. Nagarajan, M. Kato, J. Pleumeekers, P. Evans, S. Corzine, S. Hurtt, A. Dentai, S. Murthy, M. Missey, R. Muthiah, R. Salvatore, C. Joyner, R. Schneider, Jr.M. Ziari, F. Kish, D. Welch, "InP photonic integrated circuits," IEEE J. Sel. Top. Quantum Electron. 16, 1113-1125 (2010).

B. Koch, R. Noé, V. Mirvoda, D. Sandel, V. Filsinger, K. Puntsri, "40-krad/s polarization tracking in 200-Gb/s PDM-RZ-DQPSK transmission over 430 km," IEEE Photon. Technol. Lett. 22, 613-615 (2010).

2009 (2)

K. Roberts, M. O'Sullivan, K. Wu, H. Sun, A. Awadalla, D. Krause, C. Laperle, "Performance of dual-polarization QPSK for optical transport systems," J. Lightw. Technol. 27, 3546-3559 (2009).

S. Kim, R. Takei, Y. Shoji, T. Mizumoto, "Single-trench waveguide TE-TM mode converter," Opt. Exp. 17, 11267-11273 (2009).

2008 (2)

A. Gnauck, G. Charlet, P. Tran, P. Winzer, C. Doerr, J. Centanni, E. Burrows, T. Kawanishi, T. Sakamoto, K. Higuma, "25.6-Tb/s WDM transmission of polarization-multiplexed RZ-DQPSK signals," J. Lightw. Technol. 26, 79-84 (2008).

S. Chandrasekhar, X. Liu, A. Konczykowska, F. Jorge, J. Dupuy, J. Godin, "Direct detection of 107-Gb/s polarization-multiplexed RZ-DQPSK without optical polarization demultiplexing," IEEE Photon. Technol. Lett. 20, 1878-1880 (2008).

2007 (3)

D. van den Borne, S. Jansen, E. Gottwald, Krummrich, G. Khoe, H. de Waardt, "1.6-b/s/Hz spectrally efficient transmission over 1700 km of SSMF using 40$\,\times\,$85.6-Gb/s POLMUX-RZ-DQPSK," J. Lightw. Technol. 25, 222-232 (2007).

L. Augustin, J. van der Tol, R. Hanfoug, W. de Laat, M. van de Moosdijk, P. van Dijk, Y. Oei, M. Smit, "A single etch-step fabrication-tolerant polarization splitter," J. Lightw. Technol. 25, 740-746 (2007).

L. Augustin, J. van der Tol, E. Geluk, M. Smit, "Short polarization converter optimized for active-passive integration in InGaAsP-InP," IEEE Photon. Technol. Lett. 19, 1673-1675 (2007).

2006 (1)

R. Nagarajan, M. Kato, J. Pleumeekers, P. Evans, D. Lambert, A. Chen, V. Dominic, A. Mathur, P. Chavarkar, M. Missey, A. Dentai, S. Hurtt, J. Baeck, R. Muthiah, S. Murthy, R. Salvatore, S. Grubb, C. Joyner, J. Rossi, R. Schneider, M. Ziari, F. Kish, D. Welch, "Single-chip 40-channel InP transmitter photonic integrated circuit capable of aggregate data rate of 1.6 Tbit/s," Electron. Lett. 42, 771-773 (2006).

2005 (2)

R. Nagarajan, C. Joyner, R. Schneider, Jr.J. Bostak, T. Butrie, A. Dentai, V. Dominic, P. Evans, M. Kato, M. Kauffman, D. Lambert, S. Mathis, A. Mathur, R. Miles, M. Mitchell, M. Missey, S. Murthy, A. Nilsson, F. Peters, S. Pennypacker, J. Pleumeekers, R. Salvatore, R. Schlenker, R. Taylor, H. Tsai, M. V. Leeuwen, J. Webjorn, M. Ziari, D. Perkins, J. Singh, S. Grubb, M. Reffle, D. Mehuys, F. Kish, D. Welch, "Large-scale photonic integrated circuits," IEEE J. Sel. Top. Quantum Electron. 11, 50-65 (2005).

M. Kotlyar, L. Bolla, M. Midrio, L. O'Faolain, T. Krauss, "Compact polarization converter in InP-based material," Opt. Exp. 13, 5040-5045 (2005).

2004 (1)

H. El-Refaei, D. Yevick, T. Jones, "Slanted-rib waveguide InGaAsP-InP polarization converters," J. Lightw. Technol. 22, 1352-1357 (2004).

2001 (1)

1999 (1)

K. Okamoto, "Recent progress of integrated optics planar lightwave circuits," Opt. Quantum Electron. 31, 107-129 (1999).

1996 (1)

M. Smit, C. van Dam, "PHASAR-based WDM-devices: Principles, design and applications," IEEE J. Sel. Top. Quantum Electron. 2, 236-250 (1996).

1995 (2)

J. van der Tol, F. Hakimzadeh, J. Pedersen, D. Li, H. van Brug, "A new short and low-loss passive polarization converter on InP," IEEE Photon. Technol. Lett. 7, 32-34 (1995).

L. Soldano, E. Pennings, "Optical multi-mode interference devices based on self-imaging: Principles and applications," J. Lightw. Technol. 13, 615-627 (1995).

1994 (1)

L. Soldano, A. de Vreede, M. Smit, B. Verbeek, E. Metaal, F. Groen, "Mach–Zehnder interferometer polarization splitter in InGaAsP/InP," IEEE Photon. Technol. Lett. 6, 402-405 (1994).

1981 (1)

R. Alferness, "Guided-wave devices for optical communication," IEEE J. Quantum Electron. QE-17, 946-959 (1981).

Appl. Opt. (1)

Electron. Lett. (1)

R. Nagarajan, M. Kato, J. Pleumeekers, P. Evans, D. Lambert, A. Chen, V. Dominic, A. Mathur, P. Chavarkar, M. Missey, A. Dentai, S. Hurtt, J. Baeck, R. Muthiah, S. Murthy, R. Salvatore, S. Grubb, C. Joyner, J. Rossi, R. Schneider, M. Ziari, F. Kish, D. Welch, "Single-chip 40-channel InP transmitter photonic integrated circuit capable of aggregate data rate of 1.6 Tbit/s," Electron. Lett. 42, 771-773 (2006).

IEEE J. Quantum Electron. (1)

R. Alferness, "Guided-wave devices for optical communication," IEEE J. Quantum Electron. QE-17, 946-959 (1981).

IEEE J. Sel. Top. Quantum Electron. (3)

R. Nagarajan, M. Kato, J. Pleumeekers, P. Evans, S. Corzine, S. Hurtt, A. Dentai, S. Murthy, M. Missey, R. Muthiah, R. Salvatore, C. Joyner, R. Schneider, Jr.M. Ziari, F. Kish, D. Welch, "InP photonic integrated circuits," IEEE J. Sel. Top. Quantum Electron. 16, 1113-1125 (2010).

M. Smit, C. van Dam, "PHASAR-based WDM-devices: Principles, design and applications," IEEE J. Sel. Top. Quantum Electron. 2, 236-250 (1996).

R. Nagarajan, C. Joyner, R. Schneider, Jr.J. Bostak, T. Butrie, A. Dentai, V. Dominic, P. Evans, M. Kato, M. Kauffman, D. Lambert, S. Mathis, A. Mathur, R. Miles, M. Mitchell, M. Missey, S. Murthy, A. Nilsson, F. Peters, S. Pennypacker, J. Pleumeekers, R. Salvatore, R. Schlenker, R. Taylor, H. Tsai, M. V. Leeuwen, J. Webjorn, M. Ziari, D. Perkins, J. Singh, S. Grubb, M. Reffle, D. Mehuys, F. Kish, D. Welch, "Large-scale photonic integrated circuits," IEEE J. Sel. Top. Quantum Electron. 11, 50-65 (2005).

IEEE Photon. Technol. Lett. (5)

J. van der Tol, F. Hakimzadeh, J. Pedersen, D. Li, H. van Brug, "A new short and low-loss passive polarization converter on InP," IEEE Photon. Technol. Lett. 7, 32-34 (1995).

L. Augustin, J. van der Tol, E. Geluk, M. Smit, "Short polarization converter optimized for active-passive integration in InGaAsP-InP," IEEE Photon. Technol. Lett. 19, 1673-1675 (2007).

L. Soldano, A. de Vreede, M. Smit, B. Verbeek, E. Metaal, F. Groen, "Mach–Zehnder interferometer polarization splitter in InGaAsP/InP," IEEE Photon. Technol. Lett. 6, 402-405 (1994).

B. Koch, R. Noé, V. Mirvoda, D. Sandel, V. Filsinger, K. Puntsri, "40-krad/s polarization tracking in 200-Gb/s PDM-RZ-DQPSK transmission over 430 km," IEEE Photon. Technol. Lett. 22, 613-615 (2010).

S. Chandrasekhar, X. Liu, A. Konczykowska, F. Jorge, J. Dupuy, J. Godin, "Direct detection of 107-Gb/s polarization-multiplexed RZ-DQPSK without optical polarization demultiplexing," IEEE Photon. Technol. Lett. 20, 1878-1880 (2008).

J. Lightw. Technol. (6)

L. Augustin, J. van der Tol, R. Hanfoug, W. de Laat, M. van de Moosdijk, P. van Dijk, Y. Oei, M. Smit, "A single etch-step fabrication-tolerant polarization splitter," J. Lightw. Technol. 25, 740-746 (2007).

L. Soldano, E. Pennings, "Optical multi-mode interference devices based on self-imaging: Principles and applications," J. Lightw. Technol. 13, 615-627 (1995).

K. Roberts, M. O'Sullivan, K. Wu, H. Sun, A. Awadalla, D. Krause, C. Laperle, "Performance of dual-polarization QPSK for optical transport systems," J. Lightw. Technol. 27, 3546-3559 (2009).

D. van den Borne, S. Jansen, E. Gottwald, Krummrich, G. Khoe, H. de Waardt, "1.6-b/s/Hz spectrally efficient transmission over 1700 km of SSMF using 40$\,\times\,$85.6-Gb/s POLMUX-RZ-DQPSK," J. Lightw. Technol. 25, 222-232 (2007).

A. Gnauck, G. Charlet, P. Tran, P. Winzer, C. Doerr, J. Centanni, E. Burrows, T. Kawanishi, T. Sakamoto, K. Higuma, "25.6-Tb/s WDM transmission of polarization-multiplexed RZ-DQPSK signals," J. Lightw. Technol. 26, 79-84 (2008).

H. El-Refaei, D. Yevick, T. Jones, "Slanted-rib waveguide InGaAsP-InP polarization converters," J. Lightw. Technol. 22, 1352-1357 (2004).

Opt. Exp. (2)

M. Kotlyar, L. Bolla, M. Midrio, L. O'Faolain, T. Krauss, "Compact polarization converter in InP-based material," Opt. Exp. 13, 5040-5045 (2005).

S. Kim, R. Takei, Y. Shoji, T. Mizumoto, "Single-trench waveguide TE-TM mode converter," Opt. Exp. 17, 11267-11273 (2009).

Opt. Quantum Electron. (1)

K. Okamoto, "Recent progress of integrated optics planar lightwave circuits," Opt. Quantum Electron. 31, 107-129 (1999).

Other (9)

M. Boudreau, M. Poirier, G. Yoffe, B. Pezeshki, "An integrated InP coherent receiver for 40 and 100 Gb/s telecommunications systems," Proc. Optical Fiber Commun. Conf. (OFC)/Natl. Fiber Optic Eng. Conf. (NFOEC) (2009) pp. 1-3.

R. Kunkel, H.-G. Bach, D. Hoffmann, C. M. Weinert, I. Molina-Fernandez, R. Halir, "First monolithic InP-Based 90$^{\circ}$-hybrid OEIC comprising balanced detectors for 100 GE coherent frontends," Proc. Int. Conf. InP and Related Materials (2009) pp. 19.

C. van Dam, L. Spiekman, F. van Ham, F. Groen, J. van der Tol, I. Moerman, W. Pascher, M. Hamacher, H. Heidrich, C. Weinert, M. Smit, "Novel compact InP-based polarization converters using ultra short bends," Conf. Int. Photonics Res. BostonMA (1996) paper IWC5.

M. Yagi, S. Satomi, S. Ryu, "Field trial of 160-Gb/s, polarization-division multiplexed RZ-DQPSK transmission system using automatic polarization control," Proc. Optical Fiber Commun. Conf. (OFC)/Natl. Fiber Optic Eng. Conf. (NFOEC) (2008) pp. 1-3.

P. Winzer, R. Essiambre, Optical Fiber Telecommunications V B (Academic, 2008) pp. 23-93.

S. Corzine, P. Evans, M. Kato, G. He, M. Fisher, M. Raburn, A. Dentai, I. Lyubomirsky, A. Nilsson, J. Rahn, R. Nagarajan, C. Tsai, J. Stewart, D. Christini, M. Missey, V. Lal, H. Dinh, A. Chen, J. Thomson, W. Williams, P. Chavarkar, S. Nguyen, D. Lambert, S. Agashe, J. Rossi, P. Liu, J. Webjorn, T. Butrie, M. Reffle, R. Schneider, M. Ziari, C. Joyner, S. Grubb, F. Kish, D. Welch, "10-Channel $\times\,$ 40 Gb/s per channel DQPSK monolithically integrated InP-based transmitter PIC," Optical Fiber Commun. Conf. (OFC)/Natl. Fiber Optic Eng. Conf. (NFOEC) San DiegoCA (2008) paper PDP18.

M. Kato, P. Evans, S. Corzine, J. Gheorma, M. Fisher, M. Raburn, A. Dentai, R. Salvatore, I. Lyubomirsky, A. Nilsson, J. Rahn, R. Nagarajan, C. Tsai, B. Behnia, J. Stewart, D. Christini, M. Missey, A. Spannagel, D. Lambert, S. Agash e, P. Liu, D. Pavinski, M. Reffle, R. Schneider, M. Ziari, C. Joyner, F. Kish, D. Welch, "Transmitter PIC for 10-channel $\times\,$40 Gb/s per channel polarization-multiplexed RZ-DQPSK Modulation," Proc. Optical Fiber Commun. Conf. (OFC)/Natl. Fiber Optic Eng. Conf. (NFOEC) (2009) pp. 1-3.

J. Rahn, G. Goldfarb, H.-S. Tsai, W. Chen, S. Chu, B. Little, J. Hryniewicz, F. Johnson, W. Chen, T. Butrie, J. Zhang, M. Ziari, J. Tang, A. Nilsson, S. Grubb, I. Lyubomirsky, J. Stewart, R. Nagarajan, F. Kish, D. Welch, "Low-power, polarization tracked 45.6 GB/s per wavelength PM-DQPSK receiver in a 10-channel integrated module," Proc. Opt. Fiber Commun. Conf. (OFC)/Natl. Fiber Opt. Eng. Conf. (NFOEC) (2010) pp. 1-3.

R. Nagarajan, M. Kato, J. Pleumeekers, D. Lambert, V. Lal, A. Dentai, M. Kuntz, J. Rahn, H. Tsai, R. Malendevich, G. Goldfarb, J. Tang, J. Zhang, T. Butrie, M. Raburn, B. Little, A. Nilsson, M. Reffle, F. Kish, D. Welch, "10 channel, 45.6 Gb/s per channel, polarization multiplexed DQPSK InP receiver photonic integrated circuit," Proc. Optical Fiber Commun. Conf. (OFC)/Natl. Fiber Optic Eng. Conf. (NFOEC) (2010) pp. 1-3.

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