Title :
Tunable OTDR Based on Direct Modulation of Self-Injection-Locked RSOA for In-Service Monitoring of WDM-PON
Author :
Thollabandi, Madhan ; Kim, Tae-Young ; Hann, Swook ; Park, Chang-Soo
Author_Institution :
Dept. of Inf. & Commun., GIST, Gwangju
Abstract :
We propose a tunable optical time-domain reflectometer (OTDR) for in-service monitoring of wavelength- division- multiplexing passive optical networks (WDM-PONs). The proposed method uses a reflective semiconductor optical amplifier, which is self-injection-locked by a tunable fiber Bragg grating. The proposed tunable OTDR has a tuning range of 30 nm and a resolution of 50 m. The performance of the proposed scheme is experimentally evaluated to demonstrate the in-service monitoring of WDM-PON.
Keywords :
optical communication equipment; optical fibre networks; optical time-domain reflectometry; optical tuning; passive networks; semiconductor optical amplifiers; wavelength division multiplexing; OTDR; PON; passive optical networks; reflective semiconductor optical amplifier; self-injection-locked amplifier; tunable fiber Bragg grating; tunable optical time-domain reflectometer; wavelength-division-multiplexing; Bragg gratings; Fiber gratings; Laser noise; Monitoring; Optical fiber networks; Optical modulation; Passive optical networks; Stimulated emission; Time domain analysis; Tunable circuits and devices; Optical time-domain reflectometer (OTDR); reflective semiconductor optical amplifier (RSOA); wavelength- division- multiplexing passive optical network (WDM-PON);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.926928
