Light-control splitting ratio tunable Y-type terahertz wave beam splitter based on two-dimensional photonic crystal
投稿时间:2019-10-09  修订日期:2020-05-17  download
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作者单位E-mail
姜宗丹 南京邮电大学 1119565622@qq.com 
李培丽 南京邮电大学 lipl@njupt.edu.cn 
张元方 南京邮电大学  
Abstract:Light-control splitting ratio tunable Y-type terahertz wave beam splitter based on two-dimensional photonic crystal is proposed. In this scenario,the feature that coupling between line defects and the point defects of nonlinear polymer materials which have the third-order nonlinear Kerr effect is utilized. The performance of terahertz wave splitter with tunable splitting ratio is studied by plane wave expansion method (PWM) and time domain finite difference method (FDTD). The research results show that the Y-type terahertz wave splitter with tunable splitting ratio of two output ports by changing the light intensity of the control light can be realized.This beam splitter which the transmittance reaches over 98% can achieve terahertz wave splitting with a specific wavelength. At the same time, the additional loss is less than 0.087dB and the response time reaches the order of ps. The splitter with tunable splitting ratio will have broad application prospects in future terahertz wave communication.
keywords:beam splitter  terahertz wave  photonic crystal  nonlinear polymer
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Copyright:《Journal of Infrared And Millimeter Waves》