Compact multi-channel terahertz wave demultiplexer
We numerically demonstrate a compact multichannel terahertz demultiplexer which is composed of three photonic crystal directional couplers.By using plane wave expansion,the transmittance of the designed photonic crystal directional couplers are analyzed.Then,the performance of the demultiplexer based on the photonic crystal directional couplers is investigated with the aid of finite-difference timedomain method.The transmittances at frequencies of 0.57THz,0.52THz,0.54THz,and 0.6THz are 98%,92%,94%,and 88.2%,respectively.We confirm that the device can split four different terahertz wave frequencies into different output ports with high transmittance efficiency.In addition,the total size of the our terahertz demultiplexer is about 5.2mm×5.6mm,which can be easily integrated in terahertz circuit systems.This advice provides a new method to manipulate terahertz wave.
terahertz demultiplexer terahertz wave multichannel
Li Shao-He Li Jiu-sheng
Centre for THz Research China Jiliang University Hangzhou 310018,China
国际会议
杭州
英文
1-4
2018-12-03（万方平台首次上网日期，不代表论文的发表时间）