Title :
Dispersion management and gain flattened a hybrid EDFA/RFA with pumping recycling mechanism
Author :
Liaw, Shien-Kuei ; Huang, Yu-Sheng ; Hung, Hsin-Kai ; Chen, Nan-Kuang ; Hsu, Kuei-Chu ; Yu, Yi-Lin ; Wang, Ting ; Manshina, A. ; Yanovic, Y. Tver
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
We propose a hybrid C+L band fiber amplifier loop-back scheme. It is composed of a C-band erbium-doped fiber amplifier (EDFA) and an L-band Raman fiber amplifier (RFA) using double-pass dispersion compensators in a loop-back scheme. Dispersion slope mismatch precisely compensates for all C+L band channels by writing fiber Bragg gratings (FBGs) at appropriate locations. Gain variation among multiple channels can be reduced from 6.5 dB to ±0.2 dB. The pump efficiency is improved by recycling the residual pump power. The hybrid EDFA/RFA may find vast applications in WDM long-haul systems and optical networks.
Keywords :
amplifiers; optical fibre networks; pumps; recycling; wavelength division multiplexing; C+L band fiber amplifier loop-back scheme; L-band Raman fiber amplifier; WDM long-haul systems; dispersion management; double-pass dispersion; fiber Bragg gratings; hybrid EDFA/RFA; optical networks; pumping recycling mechanism; Artificial neural networks; Integrated circuits; Optical fiber dispersion; Stimulated emission; dispersion compensation; fiber Bragg grating; fiber amplifier; gain equalization; optical communication;
Conference_Titel :
Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT), 2010 International Congress on
Conference_Location :
Moscow
Print_ISBN :
978-1-4244-7285-7
DOI :
10.1109/ICUMT.2010.5676503
