Tunable OTDR Based on Direct Modulation of Self-Injection-Locked RSOA for In-Service Monitoring of WDM-PON

• Published in: IEEE photonics technology letters Vol. 20; no. 15; pp. 1323 - 1325
• Main Authors: Thollabandi, M., Tae-Young Kim, Swook Hann, Chang-Soo Park
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.08.2008; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Bragg gratings; Fiber gratings; Laser noise; Modulation; Monitoring; Multiplexing; Optical fiber networks; Optical fibers; Optical modulation; Optical time-domain reflectometer (OTDR); Passive optical networks; Photonics; reflective semiconductor optical amplifier (RSOA); Reflectometers; Semiconductor optical amplifiers; Stimulated emission; Time domain analysis; Tunable circuits and devices; Tuning; wavelength- division- multiplexing passive optical network (WDM-PON)

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. T...