分立式光纤拉曼放大器泵浦方式的实验研究  

Experimental research on pump manner of discrete fiber Raman amplifier

作　　者：耿丹[1] 杨冬晓[1] 杨庆 张在宣[3] 

机构地区：[1]浙江大学信息与电子工程学系,浙江杭州310027 [2]浙江丝绸科技有限公司,浙江杭州310011 [3]中国计量学院光电子技术研究所,浙江杭州310018

出　　处：《光电工程》2006年第12期66-69,共4页Opto-Electronic Engineering

基　　金：中央财政专项拨款资助;浙江省重大科研项目"分布式光纤拉曼放大器研制"资助(021101558)

摘　　要：对分立式光纤拉曼放大器的前向、后向泵浦方式进行了实验研究。拉曼增益介质为10km的色散补偿光纤。分别测量了前、后向泵浦的分立式FRA的增益、噪声指数和动态范围。实验结果表明,当泵浦功率小于500mW时,前、后向泵浦的分立式FRA的增益几乎相等。当泵浦功率大于500mW时,在前向泵浦的分立式FRA中发生了受激布里渊散射,前向泵浦的FRA的增益小于后向泵浦的FRA的增益,前者的噪声大于后者的噪声;前向泵浦的FRA不再具有增益保持特性,而后向泵浦的FRA仍具有增益保持特性。当泵浦功率大于500mW时,分立式FRA应该采用后向泵浦的方式。Forward and backward pump manners of discrete Fiber Raman Amplifier （FRA） have been researched, respectively. 10-km Dispersion Compensation Fiber （DCF） is used as Raman gain medium. Gain, NF and dynamic range of FRA have been measured in both pump manners. Experimental conformation： when pump power is less than 500mW, the gain of the FRA in forward pump condition is almost equal to the one of FRA in backward pump condition; When pump power is more than 500mW, stimulated Brillouin scattering occurs in FRA in forward pump condition, so the gain of FRA in forward pumpcondition is less than the one of FRA in backward pump condition, and the NF of FRA in forward pump condition is more than the one of FRA in backward pump condition. FRA has no the property of gain maintenance in forward pump condition, while FRA has the property of gain maintenance in backward pump condition. So we can summarize that when pump power is more than 500mW, backward pump manner should be adopted in discrete FRA.

关 键 词：受激拉曼散射 光纤拉曼放大器 色散补偿 

分 类 号：TN722[电子电信—电路与系统]