Title :
High sensitivity modulation/demodulation scheme for inter-orbit optical communication system with an optical amplifier
Author :
Yamakawa, Shiro ; Araki, Tomohiro ; Morikawa, Hisashi
Author_Institution :
Nat. Space Dev. Agency of Japan, Ibaraki, Japan
Abstract :
The most optimum modulation/demodulation scheme is discussed for optical inter-orbit link application. The theoretical and experimental analyses of noise characteristics are performed for a high power operated erbium doped optical fiber amplifier (EDFA). Improvements in sensitivity of intensity-modulation direct-detection (IM-DD) system and coherent system adopting high power optical fiber amplifiers are estimated by numerical analyses and experiments. The superior characteristics of coherent communication systems are shown in low bit error rate (BER) but highly-sensitive transmission under severe amplified spontaneous emission (ASE) noise
Keywords :
demodulation; laser noise; optical fibre amplifiers; optical links; optical modulation; sensitivity; space communication links; superradiance; EDFA; IM-DD system; coherent communication systems; coherent system; high power operated erbium doped optical fiber amplifier; high power optical fiber amplifiers; high sensitivity modulation/demodulation scheme; highly-sensitive transmission; intensity-modulation direct-detection system; inter-orbit optical communication system; low bit error rate; noise characteristics; optical amplifier; optical inter-orbit link application; optimum modulation/demodulation scheme; sensitivit; severe ASE noise; severe amplified spontaneous emission noise; Bit error rate; Demodulation; Erbium; Erbium-doped fiber amplifier; Optical fiber amplifiers; Optical modulation; Optical noise; Optical sensors; Performance analysis; Stimulated emission;
Conference_Titel :
LEOS '99. IEEE Lasers and Electro-Optics Society 1999 12th Annual Meeting
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-5634-9
DOI :
10.1109/LEOS.1999.813530
