Title :
Fault localization in WDM passive optical network by reusing downstream light sources
Author :
Lim, K.W. ; Son, E.S. ; Han, K.H. ; Chung, Y.C.
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Abstract :
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.
Keywords :
failure analysis; light sources; optical communication equipment; optical fibre networks; optical fibre testing; optical time-domain reflectometry; telecommunication network reliability; wavelength division multiplexing; WDM passive optical network; downstream lasers; drop fibers; fault localization; feeder fibers; optical time-domain reflectometry; wavelength division multiplexing; Arrayed waveguide gratings; Fiber lasers; Intelligent networks; Light sources; Optical fiber couplers; Optical fiber networks; Passive optical networks; Time domain analysis; WDM networks; Wavelength division multiplexing; Fault localization; optical time-domain reflectometer (OTDR); passive optical network (PON); wavelength-division multiplexing (WDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.859178
