Title :
A novel method to improve noise figure for a wide bandwidth single stage L-band EDFA
Author :
Yamashita, Takayoshi ; Yoshida, Manabu ; Tanaka, Hiroya ; Tanaka, Shoji ; Yazaki, Takahiro
Author_Institution :
Mitsubishi Cable Industries, Hyogo, Japan
Abstract :
To improve the noise characteristics and to increase the power conversion efficiency in the wide bandwidth single stage L-band EDFA, we proposed a new configuration of the EDFA which transmits 1.56 μm back-propagating noise suppression light to reduce the ASE generated around the output end of the EDF. As a result, the power conversion efficiency improved more than twice, and the NF was reduced to 3.6 dB compared to the efficient of conventional L-band EDFAs. Determining the wavelength for optimal back-propagating noise suppression light remains to be studied.
Keywords :
erbium; laser noise; optical communication equipment; optical fibre amplifiers; superradiance; 1.56 micron; ASE reduction; Er-doped fibre amplifier; L-band EDFAs; back-propagating noise suppression light; noise characteristics; power conversion efficiency; wide bandwidth single stage L-band EDFA; Bandwidth; Character generation; Erbium-doped fiber amplifier; L-band; Noise figure; Noise generators; Noise measurement; Noise reduction; Power conversion; Power generation;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002
Print_ISBN :
1-55752-701-6
DOI :
10.1109/OFC.2002.1036481
