「背向多泵激架構」拉曼放大頻段之增益平坦處理

THE GAIN-FLATTENED PROCESS OF RAMAN AMPLIFICATION BAND WITH BACKWARD-MULTIPUMP ARCHITECTURE

本文針對「背向多泵激（backward-multipump）」架構之“拉曼光纖放大器（fiber Raman amplifier, FRA）”實作及特性分析進行探討研究。有關FRA－－「背向多泵激架構」的研發主軸：拉曼增益之有效提升與放大頻段之增益平坦處理，本文共計採用單模光纖（single mode fiber，SMF）、色散補償模組（dispersion compensation module, DCM）以及大有效面積光纖（large-effective-area fiber, LEAF），在100Km光路長度上進行「拉曼放大」實驗，其間並就「色散抑低／補償」與「增益平坦」處理成效進行比較探討。

In this paper, we investigate the problems of design and implementation of a fiber Raman amplifier (FRA) based on backward-multipump architecture. In addition, the characteristics of the proposed FRA are also analyzed. Three kinds of devices, i.e., single mode fiber (SMF), dispersion compensation module(DCM) and large-effective area fiber (LEAF), are employed to evaluate the effect of Raman amplification over a 100Km transmission distance. Experimental results indicate that the suppression and compensation of dispersion are not only capable of enhancing the Raman gain but also helpful for the gain-flatten process using multipump power control. As suggested in this paper, a backward-multipump architecture is one of the possible solutions for achieving high Raman gain while maintaining excellent flatness.