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Reverse Design of On-Chip Terahertz Demultiplexers
Micromachines ( IF 3.4 ) Pub Date : 2021-09-10 , DOI: 10.3390/mi12091093
Guofeng Zhu 1 , Feng Huang 1 , Zhenrong Dai 1 , Xuewei Ju 1 , Shuncong Zhong 1 , Xiangfeng Wang 1
Affiliation  

The reverse design method (RDM) is a frontier direction in the optical research field. In this work, RDM is applied to the design of terahertz demultiplexers, including two-port and three-port terahertz demultiplexers, with areas of 3 mm × 3 mm and 5 mm × 5 mm, respectively. The Finite-Difference Time-Domain (FDTD) simulation results show that the terahertz waves at frequencies of 0.5 THz and 0.417 THz can be well separated by the two-port demultiplexer, and the transmittances of the two outputs reach as high as 0.75 after bandwidth optimization. Meanwhile, the three-port terahertz demultiplexer can have terahertz waves separated from three Ports, and the crosstalk between adjacent channels is less than −18 dB.

中文翻译:

片上太赫兹解复用器的逆向设计

逆向设计法(RDM)是光学研究领域的一个前沿方向。在这项工作中,RDM 被应用于太赫兹解复用器的设计,包括两端口和三端口太赫兹解复用器,面积分别为 3 mm × 3 mm 和 5 mm × 5 mm。时域有限差分(FDTD)仿真结果表明,0.5 THz和0.417 THz频率的太赫兹波可以被二端口解复用器很好地分离,带宽后两路输出的透射率高达0.75优化。同时,三端口太赫兹解复用器可以将太赫兹波与三个端口分开,相邻通道之间的串扰小于-18 dB。
更新日期:2021-09-10
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