Dispersion-compensating Raman/EDFA hybrid amplifier recycling residual Raman pump for efficiency enhancement
2004; Institute of Electrical and Electronics Engineers; Volume: 17; Issue: 1 Linguagem: Inglês
10.1109/lpt.2004.837264
ISSN1941-0174
AutoresJeong Hyeon Lee, You Min Chang, Young‐Geun Han, Sang Hyuck Kim, Haeyang Chung, Sang Bae Lee,
Tópico(s)Advanced Optical Network Technologies
ResumoWe 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.
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