EP 1219051 A1 20020703 - CHANNEL GAIN CONTROL FOR AN OPTICAL COMMUNICATIONS SYSTEM UTILIZING FREQUENCY DIVISION MULTIPLEXING
Title (en)
CHANNEL GAIN CONTROL FOR AN OPTICAL COMMUNICATIONS SYSTEM UTILIZING FREQUENCY DIVISION MULTIPLEXING
Title (de)
KANAL-VERSTÄRKUNGSREGELUNG FÜR EIN OPTISCHES KOMMUNIKATIONSSYSTEM MIT FREQUENZMULTIPLEXIERUNG
Title (fr)
COMMANDE DE GAIN DE CANAL DESTINEE A UN SYSTEME DE TELECOMMUNICATIONS OPTIQUES ET METTANT EN OEUVRE UN MULTIPLEXAGE EN FREQUENCE
Publication
Application
Priority
- US 0026157 W 20000921
- US 40536799 A 19990924
- US 56976100 A 20000512
Abstract (en)
[origin: WO0122628A1] Frequency-dependent gain effects in an optical fiber communications system, such as fiber dispersion, may be compensated. A number of low-speed channels is to be transmitted across an optical fiber communications system. Each low-speed channel is allocated a different frequency band of the optical fiber communications system. The gain, including both attenuation and amplification, of the communications system at each of the frequency bands is estimated. The power of each low-speed channel is adjusted to compensate for the estimated gain effects. In a preferred embodiment, the low-speed channels are frequency division multiplexed together to produce an electrical high-speed channel suitable for transmission across the communications system.
IPC 1-7
IPC 8 full level
H04B 10/2513 (2013.01); H04B 10/2569 (2013.01); H04J 1/14 (2006.01); H04J 14/02 (2006.01); H04L 29/12 (2006.01)
CPC (source: EP)
B82Y 15/00 (2013.01); H04B 10/2513 (2013.01); H04B 10/2569 (2013.01); H04J 1/14 (2013.01); H04J 14/0298 (2013.01); H04L 61/50 (2022.05)
Citation (search report)
See references of WO 0122628A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0122628 A1 20010329; WO 0122628 A9 20021114; AU 7831900 A 20010424; EP 1219051 A1 20020703
DOCDB simple family (application)
US 0026157 W 20000921; AU 7831900 A 20000921; EP 00968394 A 20000921