中国激光, 2012, 39 (1): 0105002, 网络出版: 2012-01-04
基于光纤光栅的微波扫描单边带调制法测量光纤布里渊散射特性
Characteristic Measurements of Fiber Brillouin Scattering Using Fiber Bragg Grating Based Microwave-Sweeping Single Sideband Modulation
光纤光学 单边带调制 受激布里渊散射 光纤布拉格光栅 fiber optics sideband modulation stimulated Brillouin scattering fiber Bragg grating
摘要
利用光纤布拉格光栅(FBG)和马赫曾德尔电光调制器实现了单边带光调制输出。基于微波扫描的单边带调制技术提出了一种测量光纤受激布里渊散射(SBS)特性的方法，可有效地将布里渊频移与布里渊增益谱的测量统一起来。对一段50 m长的光子晶体光纤(PCF)的SBS特性进行了测量，得到了PCF的SBS谱的布里渊频移为9.7443 GHz，布里渊增益谱线宽为22.472 MHz，布里渊增益系数为7.874×10-12 m/W。
Abstract
Single sideband modulation output is demonstrated by using of the fiber Bragg grating (FBG) and the Mach-Zehnder electro-optic modulator. Based on the microwave-sweeping single sideband modulation technique, a method to measure the characteristics of the fiber stimulated Brillouin scattering (SBS) is proposed. It can be used to measure the Brillouin frequency shift together with the Brillouin gain spectrum effectively. The properties of the stimulated Brillouin scattering in a 50 m photonic crystal fiber are measured, where the Brillouin frequency shift is 9.7443 GHz, the linewidth of the Brillouin gain spectrum is 22.472 MHz, and the Brillouin gain coefficient is 7.874×10-12 m/W, respectively.
刘玉, 任立勇, 忽满利, 梁健, 韩旭, 马成举. 基于光纤光栅的微波扫描单边带调制法测量光纤布里渊散射特性[J]. 中国激光, 2012, 39(1): 0105002. Liu Yu, Ren Liyong, Hu Manli, Liang Jian, Han Xu, Ma Chengju. Characteristic Measurements of Fiber Brillouin Scattering Using Fiber Bragg Grating Based Microwave-Sweeping Single Sideband Modulation[J]. Chinese Journal of Lasers, 2012, 39(1): 0105002.
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