基于光子晶体光纤中受激布里渊散射的光载波抑制  

Carrier-suppression Filter Based on Stimulated Brillouin Scattering in Photonic Crystal Fiber

作　　者：耿丹[1] 杨冬晓[1] 章献民[1] 耿岩[2] 

机构地区：[1]浙江大学信息与电子工程学系,杭州310027 [2]鸡西市档案局,黑龙江鸡西158100

出　　处：《光子学报》2008年第9期1833-1836,共4页Acta Photonica Sinica

基　　金：国家自然科学基金(60177025);高等学校博士学科点专项科研基金(20030335029)资助项目

摘　　要：设计了一种基于光子晶体光纤中受激布里渊散射的载波滤波器.该滤波器利用两个环形器和一段光子晶体光纤构成了一个环形腔,这种腔结构有效地降低了光纤中受激布里渊散射的阈值.理论分析了光子晶体光纤载波滤波器对提高光调制深度和射频增益的影响.利用25m的高非线性光子晶体光纤作为受激布里渊增益介质,当入射载波功率为70mW时,微波光子信号的射频增益为5.38dB,实验结果与理论计算相吻合.A novel carrier-suppression filter is designed based on stimulated Brillouin scattering in photonic crystal fiber. The filter make use of two circulators and photonic crystal fiber to form a ring cavity,which is lower the threshold of stimulated Brillouin scattering in fiber effectively. The effect of optical modulation depth and radio frequency （RF） gain by photonic crystal fiber carrier-suppression filter is analyzed in theory. In experiment, highly nonlinear photonic crystal fiber with the length of 25 m is chosen as stimulated Brillouin scattering gain medium. RF gain of microwave signal is 5.38 dB when input optical carrier power is 70 mW. All results of experiment agree with the theory.

关 键 词：光子晶体光纤 滤波器 受激布里渊散射 

分 类 号：TN25[电子电信—物理电子学]