Title :
Supervisory signal transmission methods for optical amplifier repeater systems
Author :
Matsuoka, Shinji ; Yamabayashi, Yoshiaki ; Aida, Kazuo ; Nakagawa, Kiyoshi
Author_Institution :
NTT Transmission Syst. Lab., Kanagawa, Japan
Abstract :
Supervisory (SV) signal transmission techniques are proposed for transmission systems with inline optical amplifiers. Several methods of sending an SV signal over the same fiber along with the line signal passes are examined. Transmission over 75 km along with a 1.8 Gb/s line signal is confirmed by modulating the pump light power of the optical amplifier (laser diode) with a 2 Mb/s bipolar signal, without degrading the line signal. The remaining pump light unabsorbed by the amplifying fiber carries the SV signal. Another method described is polarization modulation of line-signal light. A transmission experiment over a 1000 km fiber through 14 optical amplifiers confirms the applicability of polarization modulation
Keywords :
optical cables; optical communication equipment; optical links; repeaters; semiconductor junction lasers; 1.8 Gbit/s; 1000 km; 2 Mbit/s; 75 km; bipolar signal; inline optical amplifiers; line signal; optical amplifier repeater systems; optical fibre; polarization modulation; pump light power; semiconductor lasers; supervisory signal transmission; transmission experiment; transmission systems; Degradation; Diode lasers; Laser excitation; Optical amplifiers; Optical fiber polarization; Optical modulation; Optical pumping; Power amplifiers; Semiconductor optical amplifiers; Stimulated emission;
Conference_Titel :
Global Telecommunications Conference, 1990, and Exhibition. 'Communications: Connecting the Future', GLOBECOM '90., IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-87942-632-2
DOI :
10.1109/GLOCOM.1990.116801
