Abstract

Polarization bit interleaving of return-to-zero (RZ) pulses doubles spectral efficiency with reduced pulse-to-pulse interaction. We report transmission of sixteen 25-Gbit/s polarization-bit-interleaved RZ differential binary phase-shift-keyed (DBPSK) dense-WDM (DWDM) signals with 25-GHz channel spacing over 400 km of SMF-28 fiber link. The EDFA-based link has an amplifier spacing of 100 km with an average loss of 25 dB between erbium-doped fiber amplifiers (EDFAs) and a maximum span loss of up to 30 dB. A transmission penalty of 1.5 dB after 400 km was obtained. Compared with one polarization, a net penalty of 0.6 dB after 400 km was obtained. To the best of our knowledge, this is the first transmission test of multichannel polarization-bit-interleaved RZ-DBPSK signals operating at 25 Gbit/s with a spectral efficiency of 0.8 bit/s/Hz.

© 2003 Optical Society of America

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  1. S. Bigo, Y. Frignac, G. Charlet, W. Idler, S. Borne, H. Gross, R. Dischler, W. Poehlmann, P. Tran, C. Simonneau, D. Bayart, G. Veith, A. Jourdan, and J. Hamaide, "10.2Tb/s (256×42.7Gb/s PDM/WDM) transmission over 100km TeraLight fiber with 1.28 bit/s/Hz spectral efficiency," in Optical Fiber Communication Conference (OFC), Vol. 54 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 2001), Postdeadline paper PD25.
  2. K. Fukuchi, "Wideband and ultra-dense WDM transmission technologies toward over 10-Tb/s capacity," in Optical Fiber Communication Conference (OFC), Vol. 70 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 2002), Paper ThX5.
  3. A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, and E. Burrows, "25 × 40-Gb/s copolarized DPSK transmission over 12 × 100-km NZDF with 50-GHz channel spacing," IEEE Photon. Technol. Lett. 15, 467-469 (2003).
  4. 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. 15, 473-475 (2003).
  5. L. E. Nelson, T. N. Nielsen, and H. Kogelnik, "Observation of PMD-induced coherent crosstalk in polarization-multiplexed transmission," IEEE Photon. Technol. Lett. 13, 738-740 (2001).
  6. W. S. Lee, Y. Zhu, B. Shaw, D. Watley, C. Scahill, J. Homan, C.R.S. Fludger, M. Jones, and A. Hadjifotiou, "2.56Tb/s (32×80Gb/s) polarization-bit-interleaved transmission over 120 km NDSF with 0.8 bit/s/Hz spectral efficiency," Electron. Lett. 37, 964-965 (2001).
  7. N. Kikuchi, K. Sekine, T. Sugawara, and S. Hayase, "Narrow-spectral bandwidth 40-Gb/s bit-polarization-interleaved RZ modulation for upgrading 50-GHz spacing 10-Gb/s DWDM systems," in Technical Digest of the 7th Optoelectronics and Communications Conference (OECC) (Institute of Electrical and Electronics Engineers, New York, 2002), Paper 12B1-4, 2002.
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  10. A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, A. Agarwal, S. Banerjee, D. Grosz, S. Hunsche, A. Kung, A. Marhelyuk, D. Maywar, M. Movassaghi, X. Liu, C. Xu, X. Wei, and D. M. Gill, "2.5 Tb/s (64×42.7 Gb/s) transmission over 40×100 km NZDSF using RZ-DPSK format and all-Raman-amplified spans" in Optical Fiber Communication Conference (OFC), Vol. 70 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 2002), Postdeadline paper FC2.
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  12. C. Xu, X. Liu, and X. Wei, "Ultra-long haul DWDM transmission with differential phase shift keying dispersion managed soliton," in Technical Digest of the European Conference on Optical Communication (ECOC) (Institute of Electrical and Electronics Engineers, New York, 2001), Paper 1.1.5.
  13. H. Kim, C. R. Doerr, R. Pafchek, L. W. Stulz, and P. Bernasconi, "Polarization-mode dispersion impairments in direct-detection differential phase-shift-keying systems," Electron. Lett. 38, 1047-1048 (2002).

Electron. Lett. (2)

W. S. Lee, Y. Zhu, B. Shaw, D. Watley, C. Scahill, J. Homan, C.R.S. Fludger, M. Jones, and A. Hadjifotiou, "2.56Tb/s (32×80Gb/s) polarization-bit-interleaved transmission over 120 km NDSF with 0.8 bit/s/Hz spectral efficiency," Electron. Lett. 37, 964-965 (2001).

H. Kim, C. R. Doerr, R. Pafchek, L. W. Stulz, and P. Bernasconi, "Polarization-mode dispersion impairments in direct-detection differential phase-shift-keying systems," Electron. Lett. 38, 1047-1048 (2002).

IEEE Photon. Technol. Lett. (4)

A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, and E. Burrows, "25 × 40-Gb/s copolarized DPSK transmission over 12 × 100-km NZDF with 50-GHz channel spacing," IEEE Photon. Technol. Lett. 15, 467-469 (2003).

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. 15, 473-475 (2003).

L. E. Nelson, T. N. Nielsen, and H. Kogelnik, "Observation of PMD-induced coherent crosstalk in polarization-multiplexed transmission," IEEE Photon. Technol. Lett. 13, 738-740 (2001).

B. C. Collings and L. Boivin, "Nonlinear polarization evolution induced by cross-phase modulation and its impact on transmission systems," IEEE Photon. Technol. Lett. 12, 1582-1584 (2000).

Other (7)

T. Miyano, M. Fukutoku, K. Hattori, and H. Ono, "Suppression of degradation induced by SPM/XPM + GVD in WDM transmission using a bit-synchronous intensity modulated DPSK signal," in Technical Digest of the 5th Optoelectronics and Communications Conference (OECC) (Institute of Electrical and Electronics Engineers, New York, 2000), Paper 14D3-3, 2000.

A. H. Gnauck, G. Raybon, S. Chandrasekhar, J. Leuthold, C. Doerr, L. Stulz, A. Agarwal, S. Banerjee, D. Grosz, S. Hunsche, A. Kung, A. Marhelyuk, D. Maywar, M. Movassaghi, X. Liu, C. Xu, X. Wei, and D. M. Gill, "2.5 Tb/s (64×42.7 Gb/s) transmission over 40×100 km NZDSF using RZ-DPSK format and all-Raman-amplified spans" in Optical Fiber Communication Conference (OFC), Vol. 70 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 2002), Postdeadline paper FC2.

P. S. Cho, V. Grigoryan, N. Reingand, and I. Shpantzer, "Optical differential binary phase keying of return-to-zero pulses for long-haul DWDM transmission systems," in Technical Digest of the 7th Optoelectronics and Communications Conference (OECC) (Institute of Electrical and Electronics Engineers, New York, 2002), Postdeadline paper PD-1-7.

C. Xu, X. Liu, and X. Wei, "Ultra-long haul DWDM transmission with differential phase shift keying dispersion managed soliton," in Technical Digest of the European Conference on Optical Communication (ECOC) (Institute of Electrical and Electronics Engineers, New York, 2001), Paper 1.1.5.

S. Bigo, Y. Frignac, G. Charlet, W. Idler, S. Borne, H. Gross, R. Dischler, W. Poehlmann, P. Tran, C. Simonneau, D. Bayart, G. Veith, A. Jourdan, and J. Hamaide, "10.2Tb/s (256×42.7Gb/s PDM/WDM) transmission over 100km TeraLight fiber with 1.28 bit/s/Hz spectral efficiency," in Optical Fiber Communication Conference (OFC), Vol. 54 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 2001), Postdeadline paper PD25.

K. Fukuchi, "Wideband and ultra-dense WDM transmission technologies toward over 10-Tb/s capacity," in Optical Fiber Communication Conference (OFC), Vol. 70 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 2002), Paper ThX5.

N. Kikuchi, K. Sekine, T. Sugawara, and S. Hayase, "Narrow-spectral bandwidth 40-Gb/s bit-polarization-interleaved RZ modulation for upgrading 50-GHz spacing 10-Gb/s DWDM systems," in Technical Digest of the 7th Optoelectronics and Communications Conference (OECC) (Institute of Electrical and Electronics Engineers, New York, 2002), Paper 12B1-4, 2002.

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