Title :
Characteristics of the gain and signal-to-noise ratio of a distributed erbium-doped fiber amplifier
Author :
Wen, Senfar ; Chi, Sien
Author_Institution :
Dept. of Electr. Eng., Chung-Hua Polytech. Inst., Hsinchu, Taiwan
fDate :
12/1/1992 12:00:00 AM
Abstract :
The effects of stimulated Raman scattering (SRS) on the gain and signal-to-noise ratio (SNR) of the DEDFA with 100-km fiber length and with bidirectional pumps are numerically studied. It is found that the gain and SNR are significantly enhanced by the SRS with practical parameters. For 1.55-μm signal and 10-μW initial signal power, there are 8.8-dB gain enhancement and 3.3-dB SNR enhancement for 1.48-μm pump wavelength and 75-mW initial pump power. The characteristics of the gain and SNR enhancements due to SRS are studied for different signal wavelength, signal powers, pump wavelengths, pump powers, and effective fiber cross sections. The results show that the gain and SNR are decreased by SRS only for the unpractical high pump power and/or small effective fiber cross section
Keywords :
erbium; fibre lasers; laser theory; optical pumping; stimulated Raman scattering; 1.48 micron; 1.55 micron; 10 muW; 100 km; 75 mW; 8.8 dB; EDFA; Er-doped fibre amplifiers; IR; SNR; SRS; bidirectional pumps; distributed erbium-doped fiber amplifier; effective fiber cross sections; fibre laser gain; gain enhancement; initial signal power; pump wavelength; signal-to-noise ratio; stimulated Raman scattering; Councils; Erbium; Erbium-doped fiber amplifier; Helium; Optical fiber communication; Optical fiber theory; Optical scattering; Optical waveguides; Signal to noise ratio; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
