文档介绍：【光电工程/ Optoelectronic Engineering】
低损耗 Topas 环烯烃共聚物光纤研究
刘长蕊,许新统,张莹莹,陈 霖,郑婉君,杨 西,梁华伟,阮双琛
深圳大学深圳市激光工程重点实验室,先进光学精密制造技术广东普通高校重点实验室,深圳 518060
摘 要: 以大直径空芯微结构 Topas 环烯烃共聚物光纤为太赫兹波传输媒介,数值计算得其在 1. 89 和
2. 52 THz 处的限制损耗约为 1. 25 和 1. 59 dB / m. 实验结果表明,该结构光纤能将 1. 89 和 2. 52 THz 的太赫
兹波很好地限制在其空气芯中传输,存在较小的弯曲损耗,且 1. 89 THz 处的约束损耗低于 2. 52 THz 处, 与计算结果吻合,并获得较好传输效果.
关键词: 微结构聚合物光纤; 连续太赫兹波; Topas 环烯烃共聚物光纤; 太赫兹传输; 太赫兹成像; 约束损耗
中图分类号: TN 214 文献标志码: A doi: 10. 3724 / SP. J. 1249. 2014. 02164
Research on the low-loss Topas cyclic olefin copolymer fiber
Liu Changrui,Xu Xintong,Zhang Yingying,Chen Lin,Zheng Wanjun, Yang Xi,Liang Huawei,and Ruan Shuangchen
Shenzhen Key Laboratory of Laser Engineering,Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes,Shenzhen University,Shenzhen 518060,P. R. China
Abstract: A large diameter hollow micro-structural Topas cyclic olefin copolymer ( COC) fiber is selected for tera- hertz transmission. Numerical calculation of the confinement loss at 1. 89 and 2. 52 THz are about 1. 25 and 1. 59 dB / m,respectively. Experimental results show that this structural fiber can marvelously restrict 1. 89 and 2. 52 THz in the air inside of the fiber and exhibit relatively low bending loss. Furthermore,the fiber reveals better restriction property at 1. 89 THz than that at 2. 52 THz. In other words,the experimental results coincide with the result of the- oretical calculation.
Key words: microstructural polymer optical fiber; continuous wave terahertz; Topas cyclic olefin copolymer fiber; terahertz transmission; terahertz imaging; confinement loss
太赫兹( terahertz,THz) 辐射通常指波长在 30
~ 3 000 μm ( 对应频率为 10 ~ 0. 1 THz) 范围内的电磁波. 太赫兹波在电磁波谱中处于毫米波与红外线之间,位于宏观理论和微观量子理论的过渡频
带,属于光子学和电子学的交叉区域. 由于普通的光学材料( 如玻璃、石英等) 在太赫兹波段的损耗特别大,加之 20 世纪 80 年代前,国内外缺少产生和探测太赫兹波的有效方法和技术,故研究人员也
Received: 2013-09-12; Accepted: 2013-11-20
Foundation: National Natural Science Foundation of China ( 61275144 ) ; Shenzhen Science and Technol