EP 0929951 A1 19990721 - CIRCUIT ARRANGEMENT FOR THE OPERATION OF WAVELENGTH DIVISION MULTIPLEXING
Title (en)
CIRCUIT ARRANGEMENT FOR THE OPERATION OF WAVELENGTH DIVISION MULTIPLEXING
Title (de)
SCHALTUNGSANORDNUNG FÜR DEN BETRIEB VON WELLENLÄNGENMULTIPLEXSYSTEMEN
Title (fr)
CIRCUIT POUR LE FONCTIONNEMENT DE SYSTEMES DE MULTIPLEXAGE DE LONGUEURS D'ONDE
Publication
Application
Priority
- DE 9701596 W 19970729
- DE 19633921 A 19960822
Abstract (en)
[origin: DE19633921C1] On an acousto-optic add/drop multiplexer receiving the WDM signal on its input side, a plurality of acoustic surface waves of a determined frequency are stimulated and each time a portion of the light power of the WDM channels of an optical frequency determined by such a surface wave is separated; a superheterodyne receiver, receiving on its input side the separated portions of the light power of a polarization and the portions of light power of another polarization picked up from non separated portions of the WDM, provides an output signal corresponding to the light power transferred in the individual WDM channels and by means of which a control device tracks separately, at a predetermined value, the light power transferred in the individual WDM channels.
IPC 1-7
IPC 8 full level
G02B 6/12 (2006.01); G02B 6/293 (2006.01); G02F 1/11 (2006.01); G02F 1/335 (2006.01); H04B 10/64 (2013.01); H04J 14/00 (2006.01); H04J 14/02 (2006.01)
CPC (source: EP US)
H04B 10/64 (2013.01 - EP US)
Citation (search report)
See references of WO 9808317A1
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
DE 19633921 C1 19980212; EP 0929951 A1 19990721; JP 2000501914 A 20000215; US 6486987 B1 20021126; WO 9808317 A1 19980226
DOCDB simple family (application)
DE 19633921 A 19960822; DE 9701596 W 19970729; EP 97936569 A 19970729; JP 51024198 A 19970729; US 24261599 A 19990219