Optimal design of DC-based polarization beam splitter in lithium niobate on insulator
Optimal design of DC-based polarization beam splitter in lithium niobate on insulator
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绝缘体上铌酸锂直流偏振分束器的优化设计
DOI：
10.1016/j.optcom.2017.03.028
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发表时间：
2017-08-01
影响因子：
2.4
通讯作者：
Zhang, Shicheng
中科院分区：
文献类型：
--
作者：
Gong, Zisu;Yin, Rui;Zhang, Shicheng
提出了一种基于直流电的绝缘体上钛酸锂偏振分束器。利用铌酸锂（LiNbO3，LN）的高双折射特性，该器件结构简单，长度短。利用光束传播法（BPM）对器件进行了仿真，结果表明该器件具有良好的TE和TM偏振分离性能，消光比约为35 dB。当消光比大于10 dB时，波导宽度变化的模拟制造公差约为100 nm，带宽约为65 nm。
We propose a DC-based polarization beam splitter (PBS) in lithium niobate on insulator (LNOI). Utilizing the high birefringence property of Lithium Niobate (LiNbO3, LN), the device is achieved by simple structure in a short length. With the use of beam propagation method (BPM), the simulation results show that the device has a good performance for the separation of TE and TM polarizations with a high extinction ratio (about 35 dB). The simulated fabrication tolerance for the variation of the waveguide width is about 100 nm and the bandwidth is about 65 nm when the extinction ratio is higher than 10 dB.