摘要
提出了一种同时具有低吸收损耗、高双折射特性的新型太赫兹传输光纤.光纤由层状的聚四氟乙烯和空气层组成.采用有限元法分析了光纤的结构参数对其吸收损耗和双折射的影响.结果表明:这种光纤的双折射可高达0.08;在保证模式的吸收损耗小于20dB/m的前提下,其双折射仍可大于0.02.
A novel terahertz transmission optical fiber with low absorption loss and high birefringence is proposed. The proposed fiber is composed of alternate teflon and air-hole layers to form a two-fold symmetry configuration. Using the finite element method, the dependences of absorption loss and birefringence on the configuration parameter of the fiber are presented. The numerical results show that the birefringence can reach as large as O. 08. In addition, when the mode absorption loss is less than 20 dB/m,the birefringence can still be larger than 0.02.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第7期406-412,共7页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10904051)
中国博士后科学基金(批准号:200902505)资助的课题~~
关键词
太赫兹传输
吸收损耗
双折射
有限元法
terahertz transmission, absorption loss, birefringence, finite-element method
