【摘要】 采用后向泵浦的方案,对新型双程放大分立式光纤拉曼放大器(D-DFRA)的增益特性进行了理论计算,并在双程泵浦放大条件下对增益和噪声特性及受激布里渊散射(SBS)效应进行了实验测量,计算与测量结果较好符合。本文的研究表明:对分立式拉曼放大器通过反射机制实现泵浦光的双程泵浦,可在泵浦功率不变和保持较好噪声特性的同时,大大提升放大器的增益和功率转换效率。增益的提升上限取决于系统受激布里渊散射的阈值,在双程泵浦下增益的上限可得到提高。更多还原

【Abstract】 The gain of the new type Double-pass Discrete Fiber Raman Amplifier (D-DFRA) is calculated under the backward pumping scheme. The experimental measurement for gain performance, noise figure and Stimulated Brillouin Scattering (SBS) are conducted in the case of double-pass pumping. The experiment results are fairly consistent with the calculated results. This study demonstrates that the gain and pump efficiency can be improved significantly by using the double-pass configuration, the pump light reflector with the pump power keeping unchanged and the noise performance keeping fairly good. The upper limit of the gain is determined by the threshold of the SBS of the system. The maximum gain can be raised in the case of double-pass pumping.更多还原