摘要
为了在太赫兹波段实现远距离宽频带传输,设计了一种具有低吸收损耗的环烯烃共聚物(COC)作为基底材料双包层太赫兹光子晶体光纤。利用全矢量有限元法及模式选择理论,数值模拟了该光纤的单模传输范围、限制损耗、色散以及有效模场面积等特性。结果表明:优化结构参数可使在1-10 THz范围内基模限制损耗小于0.1 dB/m,二阶模限制损耗大于1 dB/m。因此可以获得1-10 THz的宽频带单模传输并且在1.5-10 THz内群速度色散可以控制在±0.1 ps/(THz·cm)。
In order to realize long distance and broadband transmission of terahertz wave,a doublecladding terahertz photonic crystal fiber was designed based on Topas cyclic olefin copolymer with low loss. The single-mode transmission range,confinement loss,dispersion and effective area of the double-cladding terahertz photonic crystal fiber were investigated by using the full-vector finite element method( FEM) and the mode choice theory. The results show that the confinement loss of the fundamental mode is far less than 0. 1 d B / m and the confinement loss of second-order mode loss is larger than 1 d B / m at frequency range of 1- 10 THz by tailoring the structure parameters. The broadband single mode transmission operates at bandwidth of 1- 10 THz,and the group velocity dispersion( GVD) can be controlled at ± 0. 1 ps /( THz·cm) in the range of 1. 5- 10 THz.
出处
《发光学报》
EI
CAS
CSCD
北大核心
2016年第7期845-851,共7页
Chinese Journal of Luminescence
基金
国家自然科学基金(61167005,61367007)
甘肃省自然科学基金(1112RJZA018,1112RJZA017)资助项目
关键词
太赫兹波
光子晶体光纤
单模传输
损耗
色散
terahertz
photonic crystal fiber
single mode
confinement loss
dispersion
作者简介
胡守重(1988-),男,河南南阳人,硕士研究生,2013年于郑州轻工业学院获得学士学位,主要从事光纤通信、太赫兹传输的研究。Email:hushouzhong123@163.com.
侯尚林(1970-),男,甘肃天水人,博士,教授,2008年于北京邮电大学获得博士学位,主要从事光纤通信器件和传感技术的研究。E-mail:houshanglin@163.com