Silicon nitride polarization beam splitter based on polarization-independent MMIs and apodized Bragg gratings
Silicon nitride polarization beam splitter based on polarization-independent MMIs and apodized Bragg gratings
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DOI：
10.1364/oe.420499
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发表时间：
2021-05-10
期刊：
影响因子：
3.8
通讯作者：
Dagenais, Mario
中科院分区：
文献类型：
--
作者：
Zhan, Jiahao;Brock, Joseph;Dagenais, Mario
介绍了一种基于氮化硅平台的高偏振消光比偏振分束器的设计和实验结果。PBS由两个相同的偏振无关多模干涉仪和两个相同的切趾布拉格光栅组成。该器件的工作原理是基于光栅的TE和TM阻带以不同波长为中心的事实。通过双MMI配置，来自光栅的反射光和透射光被路由到单独的输出端口。实验结果表明，在22nm带宽上，PER> 30dB，插入损耗接近1.1dB。该装置的总长度约为820 μ m。(C)根据OSA开放获取出版协议的条款，2021年美国光学学会
We present the design and experimental results of a novel polarization beam splitter (PBS) with a high polarization extinction ratio (PER) made on a Si3N4 platform. The PBS is composed of two identical polarization-independent multi-mode interferometers and two identical apodized Bragg gratings. The operating principle of this device is based on the fact that the TE and TM stopbands of the grating are centered at different wavelengths. The reflected and transmitted light from the gratings are routed to separate output ports by the two-MMI configuration. The experimental results show that a PER of > 30 dB is achieved over a bandwidth of 22 nm, with an insertion loss of similar to 1.1 dB. The total length of the device is similar to 820 mu m. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement