Light-control splitting ratio tunable Y-type Terahertz waves to beam splitter based on two-dimensional photonic crystal
Received:October 09, 2019  Revised:August 21, 2020  download
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Author NameAffiliationE-mail
JIANG Zong-Dan College of Electronic and Optical Engineering&College of Microelectronics,Nanjing University of Posts&Telecommunications,Nanjing 210023,China 1119565622@qq.com 
LI Pei-Li College of Electronic and Optical Engineering&College of Microelectronics,Nanjing University of Posts&Telecommunications,Nanjing 210023,China lipl@njupt.edu.cn 
ZHANG Yuan-Fang College of Electronic and Optical Engineering&College of Microelectronics,Nanjing University of Posts&Telecommunications,Nanjing 210023,China  
Abstract:Light-control splitting ratio tunable Y-type Terahertz waves to beam splitter based on two-dimensional photonic crystal is proposed. In this scenario, the feature that coupling with line defects and the point defects of nonlinear polymer materials which have the third-order nonlinear Kerr effect is utilized. The performance of Terahertz waves splitter with tunable splitting ratio is studied by Plane Wave Method (PWM) and Finite-Difference Time-Domain (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 waves splitting with a specific wavelength. At the same time, the additional loss is less than 0.087dB and the response time reaches the order for 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》