Fault localization of optical WDM submarine cable networks using coherent-optical time-domain reflectometry

Author

Otani, Tomohiro ; Horiuchi, Yukio ; Kawazawa, Toshio ; Goto, Koji ; Akiba, Shigeyuki

Author_Institution

Submarine Cable Syst. Dept., KDD Headquarters, Tokyo, Japan

Volume

10

Issue

7

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1000

Lastpage

1002

Abstract

This letter describes fault localization in the optical wavelength-division-multiplexing (WDM) submarine cable networks by coherent-optical time domain reflectometry (C-OTDR). Using the bidirectional system designed for WDM signal transmission and a wavelength add/drop branching unit [add/drop branching unit (BU)] circuit, the trunk path, the branch path and the add/drop BU circuit were successfully surveyed by C-OTDR with wavelength tunability. It is very effective to conduct fault localization even in the optical WDM submarine cable networks by the same way as in the conventional single-channel systems.

Keywords

fault location; light coherence; optical cables; optical fibre networks; optical fibre testing; optical time-domain reflectometry; submarine cables; wavelength division multiplexing; WDM signal transmission; add/drop branching unit circuit; bidirectional system designed; coherent-optical time-domain reflectometry; fault localization; optical WDM submarine cable networks; single-channel systems; wavelength add/drop branching unit; wavelength tunability; wavelength-division-multiplexing; Circuits; Optical fiber networks; Optical filters; Optical network units; Repeaters; Stimulated emission; Time domain analysis; Underwater cables; WDM networks; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.681297

Filename

681297