Title :
Performance supervision for multiple optical amplifiers in WDM transmission systems using spectral analysis
Author :
Chan, K. ; Chan, C.K. ; Tong, F. ; Chen, L.K.
Author_Institution :
Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Shatin, China
fDate :
5/1/2002 12:00:00 AM
Abstract :
In this letter, we propose and experimentally demonstrate a novel supervisory scheme to monitor the working status of multiple optical amplifiers in a wavelength-division-multiplexing transmission link. An optical feedback loop with unique loop length is added around each inline optical amplifier to create monitoring signal at a common supervisory wavelength. By analyzing the RF spectra of the common supervisory wavelength at the receiver end, any failed optical amplifier in the transmission link can be identified.
Keywords :
fault location; monitoring; optical feedback; optical fibre amplifiers; optical fibre communication; optical receivers; optical repeaters; spectral analysis; wavelength division multiplexing; RF spectra; WDM transmission systems; common supervisory wavelength; failed optical amplifier identification; fault detection; inline optical amplifier; loop length; monitoring signal; multiple optical amplifiers; optical feedback loop; optical fiber communication; performance supervision; receiver end; spectral analysis; supervisory scheme; transmission link; wavelength-division-multiplexing transmission link; working status monitoring; Condition monitoring; Failure analysis; Optical amplifiers; Optical feedback; Optical receivers; Radio frequency; Radiofrequency amplifiers; Semiconductor optical amplifiers; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
