Improvement of a Fiber-Optic Transceiver for OTDR by Using an External Optical Amplifier

Naoto KISHI  Takahumi SANO  

IEICE TRANSACTIONS on Electronics   Vol.E83-C   No.3   pp.418-422
Publication Date: 2000/03/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Optical Fiber Sensors)
Category: Distributed Sensing
OTDR,  optical fiber amplifiers,  optical fiber lasers,  Q-switched lasers,  

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An improvement of the fiber-optic transceiver having both transmitter and receiver functions of optical time-domain reflectometers is examined. The improvement is achieved by introducing an external optical amplifier without changing the previously reported configuration. The characteristics of the transmitted Q-switched pulse and the receiver gain is studied theoretically and experimentally to estimate the performance improvement. It is found that the introduction of the external optical amplifier is a simple and effective way to the performance improvement.