A novel in-service surveillance scheme for optically amplified transmission systems

Author

Chan, Chun-Kit ; Chen, Lian-Kuan ; Tong, Frank ; Lam, Dennis

Author_Institution

Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong

Volume

9

Issue

11

fYear

1997

Firstpage

1520

Lastpage

1522

Abstract

We propose here a novel surveillance scheme for an optically amplified transmission system which allows simultaneous in-service fault identification for fiber and optical amplifiers. While requiring additional fiber Bragg gratings of designated wavelengths to be integrated with optical amplifiers, the monitoring light source is derived from the unused spectra of ASE and no dedicated light source is needed as in conventional OTDR technique. We have further demonstrated the scheme´s feasibility with a 100-km, three-EDFA optical transmission system.

Keywords

diffraction gratings; erbium; fibre lasers; identification; optical fibre testing; optical fibres; optical time-domain reflectometry; superradiance; surveillance; telecommunication network reliability; 100 km; ASE; EDFA optical transmission system; Er-doped fibre amplifiers; OTDR technique; designated wavelengths; fiber Bragg gratings; fiber amplifiers; in-service surveillance scheme; light source; optical amplifiers; optically amplified transmission systems; simultaneous in-service fault identification; unused spectra; Fault diagnosis; Integrated optics; Light sources; Optical design; Optical design techniques; Optical fiber amplifiers; Optical fibers; Semiconductor optical amplifiers; Stimulated emission; Surveillance;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.634728

Filename

634728