Title :
Novel coherent heterodyne optical time domain reflectometry for fault localization of optical amplifier submarine cable systems
Author :
Horiuchi, Yukio ; Ryu, Shiro ; Mochizuki, Kiyofumi ; Wakabayashi, Hiroharu
Author_Institution :
KDD Meguro R&D Lab., Tokyo, Japan
fDate :
4/1/1990 12:00:00 AM
Abstract :
A coherent, heterodyne-detection, optical time-domain reflectometry technique suitable for an all-optical repeater system is proposed. Rayleigh backscatter measurement through a 309-km bidirectional optical transmission line with six cascaded in-line semiconductor laser amplifiers is demonstrated using this technique. The possibility of fault localization on an optical amplifier system with optical isolators is shown.<>
Keywords :
Rayleigh scattering; backscatter; fault location; high-frequency transmission line measurement; optical cables; optical links; repeaters; submarine cables; time-domain reflectometry; 309 km; OTDR; Rayleigh backscatter measurement; all-optical repeater system; bidirectional optical transmission line; coherent heterodyne optical time domain reflectometry; fault localization; optical amplifier submarine cable systems; optical isolators; optical repeater; six cascaded in-line semiconductor laser amplifiers; Backscatter; Optical mixing; Quantum cascade lasers; Reflectometry; Repeaters; Semiconductor lasers; Semiconductor optical amplifiers; Stimulated emission; Time domain analysis; Transmission line measurements;
Journal_Title :
Photonics Technology Letters, IEEE
