太赫兹科学与电子信息学报2017，Vol.15Issue(6)：889-897,9.DOI:10.11805/TKYDA201706.0889
渐变型太赫兹空芯波导的传输特性
Transmission characteristics of Gradually-Tapered Hollow Waveguide for terahertz wave
摘要
Abstract
Characteristics of Gradually-Tapered Hollow Waveguide(GTHW) are investigated for terahertz wave transmission. Based on the ray-optics method, simulation analysis is made in detail on beam profile and transmission attenuation. Compared with Constant Diameter Hollow Waveguide(CDHW), GTHW has unique properties when light travels from large end to small end or in the opposite direction. When light travels from large end to small end, GTHW and CDHW have similar additional losses caused by bending, and GTHW has much higher coupling efficiency and is convenient coupled with various light sources. When light travels from small end to large end, GTHW has lower transmission loss and an output beam with smaller divergence angle. Influences of waveguide parameters on transmission attenuation are simulated, such as bending radius, light source divergence angle, and the angle of the taper slope. Verification experiments are carried by using laser diode radiating at the wavelength of 532 nm. Measured data show good agreement with the simulation results.关键词
太赫兹/光纤光学/渐变型/空芯波导Key words
terahertz/fiber optics/gradually-tapered/hollow waveguide分类
信息技术与安全科学引用本文复制引用
于晶,陈天航,朱晓松,石艺尉..渐变型太赫兹空芯波导的传输特性[J].太赫兹科学与电子信息学报,2017,15(6):889-897,9.基金项目
上海市自然科学基金资助项目(15ZR1404100) （15ZR1404100）
