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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 2 — Jan. 17, 2011
  • pp: 1354–1359

CD-insensitive PMD monitoring based on RF power measurement

Jing Yang, Changyuan Yu, Linghao Cheng, Zhaohui Li, Chao Lu, Alan Pak Tao Lau, Hwa-yaw Tam, and P. K. A. Wai  »View Author Affiliations


Optics Express, Vol. 19, Issue 2, pp. 1354-1359 (2011)
http://dx.doi.org/10.1364/OE.19.001354


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Abstract

We propose and experimentally demonstrate a chromatic dispersion (CD)-insensitive first-order polarization mode dispersion (PMD) monitoring method based on radio-frequency (RF) power measurement. In high-speed (>10-GSym/s) transmission systems, a narrowband fiber Bragg grating (FBG) notch filter filters out the optical components at 10GHz away from the carrier. After square-law detection, the 10-GHz RF tone changes with PMD and is insensitive to CD, which can be used as a PMD monitoring signal. Compared with the monitoring techniques utilizing clock tone, the PMD measurement range is increased from 26.3-ps to 50-ps while the requirement of the bandwidth of photodetector is reduced from 19GHz to 10GHz in 19-Gsym/s systems. It is experimentally shown that this technique is efficient on CD-insensitive first-order PMD monitoring for 38-Gbit/s DQPSK and 57-Gbit/s D8PSK systems.

© 2011 OSA

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(260.2030) Physical optics : Dispersion

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: October 15, 2010
Revised Manuscript: November 28, 2010
Manuscript Accepted: December 1, 2010
Published: January 12, 2011

Citation
Jing Yang, Changyuan Yu, Linghao Cheng, Zhaohui Li, Chao Lu, Alan Pak Tao Lau, Hwa-yaw Tam, and P. K. A. Wai, "CD-insensitive PMD monitoring based on RF power measurement," Opt. Express 19, 1354-1359 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-2-1354


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