Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6015
Title: CD-insensitive PMD monitoring based on RF power measurement
Authors: Yang, J
Yu, C
Cheng, L
Li, Z
Lu, C 
Lau, APT 
Tam, HY 
Wai, PKA 
Keywords: Fiber optics communication
Fiber optics links and subsystems
Dispersion
Issue Date: 17-Jan-2011
Publisher: Optical Society of America
Source: Optics express, 17 Jan. 2011, v. 19 no. 2, p. 1354-1359 How to cite?
Journal: Optics express 
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.
URI: http://hdl.handle.net/10397/6015
EISSN: 1094-4087
DOI: 10.1364/OE.19.001354
Rights: ©2011 Optical Society of America
This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-2-1354. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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