Open AccessFault-detection technique in a WDM-PON
Author(s) -
Juhee Park,
Jin-Serk Baik,
Changhee Lee
Publication year - 2007
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.001461
Subject(s) - wavelength division multiplexing , optical time domain reflectometer , optics , passive optical network , crosstalk , laser diode , multiplexing , optical fiber , wavelength , computer science , materials science , fiber optic sensor , laser , fiber optic splitter , telecommunications , physics
We propose and demonstrate a new in-service fault-localization method for a wavelength division multiplexing passive optical network (WDM-PON). This scheme uses a tunable OTDR realized by a wavelength-locked Fabry-Perot laser diode. We successfully detect the faults both at the feeder fiber and the drop fibers. The resolution and the dynamic range are 100 m and 12 dB, respectively. In addition, the crosstalk induced by the OTDR signal to the transmission data is negligible.