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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 11 — May. 28, 2007
  • pp: 6817–6822

Free spectral range optimization of return-to-zero differential phase shift keyed demodulation in the presence of chromatic dispersion

Yannick Keith Lizé, Louis Christen, Xiaoxia Wu, Jeng-Yuan Yang, Scott Nuccio, Teng Wu, Alan E. Willner, and Raman Kashyap  »View Author Affiliations


Optics Express, Vol. 15, Issue 11, pp. 6817-6822 (2007)
http://dx.doi.org/10.1364/OE.15.006817


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Abstract

Optical differential phase shift keying is normally demodulated in a delay-line interferometer with a 1-bit delay such that the free-spectral-range of the demodulator is equal to the transmitted bitrate. We show using Karkunen-Loeve expansion simulation that free-spectral-range optimization leads to increased chromatic dispersion tolerances. The optimized delay inversely scales with the amount of chromatic dispersion such that a delay slightly shorter than the bit period increases tolerances with no adverse effect on the polarization-mode-dispersion tolerance or frequency offset penalty at the receiver.

© 2007 Optical Society of America

OCIS Codes
(060.5060) Fiber optics and optical communications : Phase modulation

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 23, 2007
Revised Manuscript: April 23, 2007
Manuscript Accepted: April 24, 2007
Published: May 18, 2007

Citation
Yannick K. Lizé, Louis Christen, Xiaoxia Wu, Jeng-Yuan Yang, Scott Nuccio, Teng Wu, Alan E. Willner, and Raman Kashyap, "Free spectral range optimization of return-to-zero differential phase shift keyed demodulation in the presence of chromatic dispersion," Opt. Express 15, 6817-6822 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-11-6817


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