光学学报, 2017, 37 (11): 1106003, 网络出版: 2018-09-07
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 下载: 947次
Novel Mach-Zehnder Interferometric Interleaver Based on Fiber Ring Resonators
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。
Abstract
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.
鲁彦, 鲁怀伟, 蒲会兰, 侯越, 罗冠炜. 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[J]. 光学学报, 2017, 37(11): 1106003. Yan Lu, Huaiwei Lu, Huilan Pu, Yue Hou, Guanwei Luo. Novel Mach-Zehnder Interferometric Interleaver Based on Fiber Ring Resonators[J]. Acta Optica Sinica, 2017, 37(11): 1106003.