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Proceedings Paper

In-service characterization of optical links and signals with respect to PMD
Author(s): Harald Rosenfeldt; Dieter Werner
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Paper Abstract

Tackling PMD has turned out to be one of the most puzzling problems during the advent of high speed optical transmission systems. It still seems far more attractive to avoid links with high PMD than to install an expensive PMDcompensator. Measuring the PMD of an installed fiber link can answer the question if this link can be operated with or without a PMD-compensator. Common test methods require exclusive access to the fiber link. This is considered to be a major limitation since it is not easy to reroute the traffic of a WDM system with many channels. This contribution discusses techniques to measure the PMD of a fiber link while it is in service ("In-Situ PMD Measurement"). These approaches can be applied to a single channel as well as to the whole received WDM signal and the fact that only single end access is needed makes them appear quite attractive. However, there are principal limitations which need to be understood in order to qualify a link. Performing these measurements while the link is in service will help network operators to smoothly upgrade to higher bit rates in their backbone networks.

Paper Details

Date Published: 22 January 2010
PDF: 8 pages
Proc. SPIE 7621, Optical Metro Networks and Short-Haul Systems II, 762108 (22 January 2010); doi: 10.1117/12.846357
Show Author Affiliations
Harald Rosenfeldt, Agilent Technologies (Germany)
Dieter Werner, Alcatel-Lucent (Germany)

Published in SPIE Proceedings Vol. 7621:
Optical Metro Networks and Short-Haul Systems II
Werner Weiershausen; Benjamin Dingel; Achyut Kumar Dutta; Atul K. Srivastava, Editor(s)

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