DocumentCode
860226
Title
Supervisory system for cascaded semiconductor laser amplifier repeaters
Author
Ellis, A.D. ; Stallard, W.A. ; Malyon, D.J.
Author_Institution
British Telecom Res. Labs., Ipswich, UK
Volume
25
Issue
5
fYear
1989
fDate
3/2/1989 12:00:00 AM
Firstpage
309
Lastpage
311
Abstract
A technique for locating a transmission path failure in an inline cascade of semiconductor laser amplifier repeaters to within one fibre span is demonstrated. If a fault occurs, the loss of signal is detected in the following repeaters and a locally generated tone modulates the spontaneous emission of the repeater, signalling the fault to the system terminals.
Keywords
optical links; repeaters; semiconductor junction lasers; cascaded semiconductor laser amplifier repeaters; fibre span; inline cascade; locally generated tone; spontaneous emission; transmission path failure;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19890215
Filename
19733
Link To Document