EP 1127420 A1 20010829 - MULTIPLE-WAVELENGTH AMPLIFIED TELECOMMUNICATIONS SYSTEM WITH GAIN COMPENSATION
Title (en)
MULTIPLE-WAVELENGTH AMPLIFIED TELECOMMUNICATIONS SYSTEM WITH GAIN COMPENSATION
Title (de)
MULTIWELLENLÄNGEN-VERSTÄRKTES TELEKOMMUNIKATIONSSYTEM MIT GEWINNAUSGLEICH
Title (fr)
SYSTEME DE TELECOMMUNICATIONS AMPLIFIE EN LONGUEURS D'ONDES MULTIPLES A COMPENSATION DU GAIN
Publication
Application
Priority
- EP 99950772 A 19991022
- EP 9908028 W 19991022
- EP 98120830 A 19981102
- US 10738998 P 19981106
Abstract (en)
[origin: WO0027056A1] Optical telecommunications system, comprising: a station (1) for transmitting optical signals, comprising a transmission signal generator, capable of generating at least two signals at wavelengths lying within a band of predetermined width, and a multiplexer of the optical signals; a station for receiving the optical signals; and an optical fibre line connecting the said multiplexer of the transmission station to the receiving station. The optical fibre line includes at least one optical amplifier (7) comprising at least one fibre (12) doped with a rare earth, at least one source of pumping radiation (14) for the said doped fibre, and a gain stabilization circuit. The gain stabilization circuit comprises: a separator of the transmission signals from the spontaneous emission of the amplifier, for example an optical circulator with Bragg gratings to reject signal wavelengths connected after the doped fibre and capable of sending the transmission signals to the output of the amplifier and the spontaneous emission to a further output, and a loop circuit for the re-circulation of the said spontaneous emission collected from the said further output and re-injected before the said doped fibre of the amplifier.
IPC 1-7
IPC 8 full level
H01S 3/067 (2006.01); H01S 3/13 (2006.01); H04B 10/291 (2013.01); H04B 10/296 (2013.01); H04J 14/02 (2006.01); H01S 3/094 (2006.01)
CPC (source: EP)
H01S 3/06754 (2013.01); H01S 3/1302 (2013.01); H04B 10/2912 (2013.01); H04B 10/296 (2013.01); H04J 14/0221 (2013.01); H01S 3/094023 (2013.01)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 0027056 A1 20000511; AU 6342199 A 20000522; BR 9915045 A 20010717; CA 2349266 A1 20000511; EP 1127420 A1 20010829
DOCDB simple family (application)
EP 9908028 W 19991022; AU 6342199 A 19991022; BR 9915045 A 19991022; CA 2349266 A 19991022; EP 99950772 A 19991022