Title :
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
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;
Journal_Title :
Photonics Technology Letters, IEEE
