Fault localization in WDM passive optical network by reusing downstream light sources

We propose and demonstrate a simple and cost-effective technique to detect and localize the fiber failures in wavelength-division-multiplexed (WDM) passive optical networks. By reusing the downstream lasers as WDM light sources for the optical time-domain reflectometry, the proposed technique can lo...

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Bibliographic Details
Published in:IEEE photonics technology letters 2005-12, Vol.17 (12), p.2691-2693
Main Authors: Lim, K.W., Son, E.S., Han, K.H., Chung, Y.C.
Format: Article
Language:English
Subjects:
Arrayed waveguide gratings
Computer networks
Failure
Fault localization
Feeders
Fiber lasers
Intelligent networks
Lasers
Light sources
Optical communication
Optical fiber couplers
Optical fiber networks
Optical fibers
optical time-domain reflectometer (OTDR)
passive optical network (PON)
Passive optical networks
Time domain analysis
Wavelength division multiplexing
wavelength-division multiplexing (WDM)
WDM networks
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Description
Summary:We propose and demonstrate a simple and cost-effective technique to detect and localize the fiber failures in wavelength-division-multiplexed (WDM) passive optical networks. By reusing the downstream lasers as WDM light sources for the optical time-domain reflectometry, the proposed technique can localize the failures in both feeder and drop fibers without using the expensive tunable laser.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2005.859178