基于光纤谐振腔的新型马赫-曾德尔干涉仪型波长交错滤波器  

Novel Mach-Zehnder Interferometric Interleaver Based on Fiber Ring Resonators

作　　者：鲁彦 鲁怀伟[1] 蒲会兰[3] 侯越[3] 罗冠炜[1] 

机构地区：[1]兰州交通大学数理学院,甘肃兰州730070 [2]甘肃省建筑设计研究院,甘肃兰州730030 [3]兰州交通大学电子与信息工程学院,甘肃兰州730070

出　　处：《光学学报》2017年第11期52-59,共8页Acta Optica Sinica

基　　金：国家自然科学基金(11362008;11672121);甘肃省自然科学基金(1508RJZA081)

摘　　要：为改善全光纤波长交错滤波器(Interleaver)的输出特性,提出了一种将带自反馈光纤谐振腔的2×2光纤耦合器作为马赫-曾德尔干涉仪(MZI)输出端耦合器的新型全光纤MZI-Interleaver,推导了该器件的输出表达式,并进行了数值模拟分析.分析结果表明:改进后的MZI-Interleaver透射波形更加接近于方波,阻带抑制和过渡带滚降特性明显加强;与传统的光纤谐振腔辅助MZI-Interleaver相比,在考虑传输损耗的情况下,改进后的MZI-Interleaver相干涉的两束光信号不存在幅度差异,因此降低了传输损耗对全光纤MZI-Interleaver消光特性的影响.In order to improve the output performance of all-fiber interleaver, a novel all-fiber Mach-Zehnder interferometer （MZI） interleaver which uses a 2× 2 fiber coupler with self-feedback as the output coupler is proposed. An output expression of the system is derived and simulated numerically. The results show that the transmitted waveform of the proposed MZI-Interleaver is close to a square wave, and the rejection in stopband and the rolloff in transition band are improved remarkably. Compared with the traditional MZI-Interleaver based on fiber resonator, the difference between the intensities of two coherent lights dose not exist when the influence of the propagation loss is considered, and the influence of the propagation loss on extinction ratio of all-fiber MZI-Interleaver can be effectively reduced.

关 键 词：光纤光学 波长交错滤波器 马赫-曾德尔干涉仪 环形谐振腔 

分 类 号：TN253[电子电信—物理电子学] TN929.11