Title :
Dispersion-compensating Raman/EDFA hybrid amplifier recycling residual Raman pump for efficiency enhancement
Author :
Lee, Ju Han ; Chang, You Min ; Han, Young-Geun ; Kim, Sang Hyuck ; Chung, Haeyang ; Lee, Sang Bae
Author_Institution :
Photonics Res. Center, Korea Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
We experimentally demonstrate a novel concept of the dispersion-compensating Raman/erbium-doped fiber amplifier hybrid amplifier recycling residual Raman pump for increase of overall power conversion efficiency. The proposed dispersion-compensating hybrid amplifier system has only one pump source for Raman amplification in the dispersion-compensating fiber (DCF) and the residual pump power after the DCF is recycled for secondary signal amplification in an erbium-doped fiber cascaded to the DCF. Using the proposed scheme, we achieve the significant enhancement of both signal gain and effective gain-bandwidth by 15 dB (small signal gain) and 20 nm, respectively, compared to the performance of the Raman-only amplifier.
Keywords :
Raman lasers; Raman spectra; erbium; optical fibre amplifiers; optical fibre communication; optical fibre dispersion; optical pumping; 15 dB; EDFA; Raman amplification; Raman amplifier; dispersion compensation; dispersion-compensating fiber; effective gain-bandwidth; efficiency enhancement; erbium-doped fiber; hybrid amplifier; optical fiber communication; power conversion efficiency; residual Raman pump; secondary signal amplification; signal gain enhancement; Erbium-doped fiber amplifier; Gain; Optical amplifiers; Optical fiber amplifiers; Optical fiber communication; Optical fiber dispersion; Power amplifiers; Power conversion; Recycling; Stimulated emission; Raman scattering; erbium-doped fiber (EDF); optical fiber amplifiers; optical fiber communication; optical pumping;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.837264
