Abstract

A novel device that demodulates both quadratures of the optical differential quadrature phase-shift keying (DQPSK) format in a single interferometer by using a 4 × 4 star coupler was demonstrated. Simultaneous measurements of both DQPSK quadratures at 42.7 Gb/s are also presented.

© 2006 IEEE

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  1. R. A. Griffin, R. I. Johnstone, R. G. Walker, J. Hall, S. D. Wadsworth, K. Berry, A. C. Carter, M. J. Wale, J. Hughes, P. A. Jerram and N. J. Parsons, "10 Gb/s optical differential quadrature phase shift key (DQPSK) transmission using GaAs/AlGaAs integration", in Proc. Optical Fiber Communication (OFC), Anaheim, CA, 2002, pp. FD6-1-FD6-3.
  2. T. Tokle, C. R. Davidson, M. Nissov, J.-X. Cai, D. Foursa and A. Pilipetskii, "6500 km transmission of RZ-DQPSK WDM signals", Electron. Lett., vol. 40, no. 7, pp. 444-445, Apr. 2004.
  3. P. S. Cho, V. S. Grigoryan, Y. A. Godin, A. Salamon and Y. Achiam, "Transmission of 25-Gb/s RZ-DQPSK signals with 25-GHz channel spacing over 1000 km of SMF-28 fiber", IEEE Photon. Technol. Lett., vol. 15, no. 3, pp. 473-475, Mar. 2003.
  4. H. Kim and R.-J. Essiambre, "Transmission of 8 × 20 Gb/s DQPSK signals over 310-km SMF with 0.8-b/s/Hz spectral efficiency", IEEE Photon. Technol. Lett., vol. 15, no. 5, pp. 769-771, May 2003.
  5. K. Ishida, K. Shimizu, T. Mizuochi, K. Motoshima, D.-S. Ly-Gagnon and K. Kikuchi, "Transmission of 20 × 20 Gb/s RZ-DQPSK signals over 5090 km with 0.53 b/s/Hz spectral efficiency", presented at the Optical Fiber Communication (OFC), Los Angeles, CA, Paper FM2, 2004.
  6. A. H. Gnauck, P. J. Winzer, S. Chandrasekhar and C. Dorrer, "Spectrally efficient (0.8 b/s/Hz) 1-Tb/s (25 × 42.7 Gb/s) RZ-DQPSK transmission over 28 100-km SSMF spans with 7 optical add/drops", presented at the Eur. Conf. Optical Communication (ECOC), Stockholm, Sweden,Postdeadline Paper Th4.4.1, 2004.
  7. N. Yoshikane and I. Morita, "1.14 b/s/Hz spectrally-efficient 50 × 85.4 Gb/s transmission over 300 km using copolarized CS-RZ DQPSK signals", presented at the Optical Fiber Communication (OFC), Los Angeles, CA, Paper PDP38, 2004.
  8. G. Kramer, A. Ashikhmin, A. J. van Wijngaarden and X. Wei, "Spectral efficiency of coded phase-shift keying for fiber-optic communication", J. Lightw. Technol., vol. 21, no. 10, pp. 2438-2445, Oct. 2003.
  9. H. Kim and P. J. Winzer, "Robustness to laser frequency offset in direct-detection DPSK and DQPSK systems", J. Lightw. Technol., vol. 21, no. 9, pp. 1887-1891, Sep. 2003.
  10. C. R. Doerr, D. M. Gill, A. H. Gnauck, L. L. Buhl, P. J. Winzer, M. A. Cappuzzo, A. Wong-Foy, E. Y. Chen and L. T. Gomez, "Simultaneous reception of both quadratures of 40-Gb/s DQPSK using a simple monolithic demodulator", presented at the Optical Fiber Communication Conf., Anaheim, CA, Paper PDP12, 2005.
  11. C. Dragone, "Efficient N × N star coupler base on Fourier optics", Electron. Lett., vol. 24, no. 15, pp. 942-944, Jul. 1988.
  12. A. R. L. Travis and J. E. Carroll, "A possible fused fibre in-phase/quadrature measuring multiport", Electron. Lett., vol. 21, no. 21, pp. 954-955, Oct. 1985.
  13. L. B. Soldano, M. K. Smit, A. H. De Vreede, J. W. M. van Ufflen, B. H. Verbeek, P. K. van Bennekom, W. H. C. de Krom and W. van Etten, "New all-passive 4 × 4 optical planar optical phase diversity network", in Proc. Eur. Conf. Optical Communication, Paris, France, 1991, pp. 96-99.
  14. C. Dragone, "An N × N optical multiplexer using a planar arrangement of two star couplers", IEEE Photon. Technol. Lett., vol. 3, no. 9, pp. 812-815, Sep. 1991.
  15. Y. P. Li, "Optical device having low insertion loss", U.S. Patent 5 745 618, Apr. <day>28</day>, 1998.
  16. C. R. Doerr, R. Pafchek and L. W. Stulz, "16-band integrated dynamic gain equalization filter with less than 2.8-db insertion loss", IEEE Photon. Technol. Lett., vol. 14, no. 3, pp. 334-336, Mar. 2002.

Other (16)

R. A. Griffin, R. I. Johnstone, R. G. Walker, J. Hall, S. D. Wadsworth, K. Berry, A. C. Carter, M. J. Wale, J. Hughes, P. A. Jerram and N. J. Parsons, "10 Gb/s optical differential quadrature phase shift key (DQPSK) transmission using GaAs/AlGaAs integration", in Proc. Optical Fiber Communication (OFC), Anaheim, CA, 2002, pp. FD6-1-FD6-3.

T. Tokle, C. R. Davidson, M. Nissov, J.-X. Cai, D. Foursa and A. Pilipetskii, "6500 km transmission of RZ-DQPSK WDM signals", Electron. Lett., vol. 40, no. 7, pp. 444-445, Apr. 2004.

P. S. Cho, V. S. Grigoryan, Y. A. Godin, A. Salamon and Y. Achiam, "Transmission of 25-Gb/s RZ-DQPSK signals with 25-GHz channel spacing over 1000 km of SMF-28 fiber", IEEE Photon. Technol. Lett., vol. 15, no. 3, pp. 473-475, Mar. 2003.

H. Kim and R.-J. Essiambre, "Transmission of 8 × 20 Gb/s DQPSK signals over 310-km SMF with 0.8-b/s/Hz spectral efficiency", IEEE Photon. Technol. Lett., vol. 15, no. 5, pp. 769-771, May 2003.

K. Ishida, K. Shimizu, T. Mizuochi, K. Motoshima, D.-S. Ly-Gagnon and K. Kikuchi, "Transmission of 20 × 20 Gb/s RZ-DQPSK signals over 5090 km with 0.53 b/s/Hz spectral efficiency", presented at the Optical Fiber Communication (OFC), Los Angeles, CA, Paper FM2, 2004.

A. H. Gnauck, P. J. Winzer, S. Chandrasekhar and C. Dorrer, "Spectrally efficient (0.8 b/s/Hz) 1-Tb/s (25 × 42.7 Gb/s) RZ-DQPSK transmission over 28 100-km SSMF spans with 7 optical add/drops", presented at the Eur. Conf. Optical Communication (ECOC), Stockholm, Sweden,Postdeadline Paper Th4.4.1, 2004.

N. Yoshikane and I. Morita, "1.14 b/s/Hz spectrally-efficient 50 × 85.4 Gb/s transmission over 300 km using copolarized CS-RZ DQPSK signals", presented at the Optical Fiber Communication (OFC), Los Angeles, CA, Paper PDP38, 2004.

G. Kramer, A. Ashikhmin, A. J. van Wijngaarden and X. Wei, "Spectral efficiency of coded phase-shift keying for fiber-optic communication", J. Lightw. Technol., vol. 21, no. 10, pp. 2438-2445, Oct. 2003.

H. Kim and P. J. Winzer, "Robustness to laser frequency offset in direct-detection DPSK and DQPSK systems", J. Lightw. Technol., vol. 21, no. 9, pp. 1887-1891, Sep. 2003.

C. R. Doerr, D. M. Gill, A. H. Gnauck, L. L. Buhl, P. J. Winzer, M. A. Cappuzzo, A. Wong-Foy, E. Y. Chen and L. T. Gomez, "Simultaneous reception of both quadratures of 40-Gb/s DQPSK using a simple monolithic demodulator", presented at the Optical Fiber Communication Conf., Anaheim, CA, Paper PDP12, 2005.

C. Dragone, "Efficient N × N star coupler base on Fourier optics", Electron. Lett., vol. 24, no. 15, pp. 942-944, Jul. 1988.

A. R. L. Travis and J. E. Carroll, "A possible fused fibre in-phase/quadrature measuring multiport", Electron. Lett., vol. 21, no. 21, pp. 954-955, Oct. 1985.

L. B. Soldano, M. K. Smit, A. H. De Vreede, J. W. M. van Ufflen, B. H. Verbeek, P. K. van Bennekom, W. H. C. de Krom and W. van Etten, "New all-passive 4 × 4 optical planar optical phase diversity network", in Proc. Eur. Conf. Optical Communication, Paris, France, 1991, pp. 96-99.

C. Dragone, "An N × N optical multiplexer using a planar arrangement of two star couplers", IEEE Photon. Technol. Lett., vol. 3, no. 9, pp. 812-815, Sep. 1991.

Y. P. Li, "Optical device having low insertion loss", U.S. Patent 5 745 618, Apr. <day>28</day>, 1998.

C. R. Doerr, R. Pafchek and L. W. Stulz, "16-band integrated dynamic gain equalization filter with less than 2.8-db insertion loss", IEEE Photon. Technol. Lett., vol. 14, no. 3, pp. 334-336, Mar. 2002.

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