Chen Tien-Jung
Department of Electro-optical Engineering, National Taipei University of Technology, Taipei 106, Taiwan.
Opt Lett. 2004 Dec 15;29(24):2852-4. doi: 10.1364/ol.29.002852.
A novel two-mode fiber-optic interferometer employing a liquid-crystal-clad fiber as a modal filter is proposed. The liquid-crystal-clad fiber can guide one of the second-order modes, TE01, and leak out the other TM01 and HE21 modes. Thus two spatial modes, fundamental mode HE11 and second-order mode TE01 serve as the two arms of the interferometer to detect an external perturbation. The experimental results obtained when this interferometer was used to sense temperatures ranging from 20 to 100 degrees C are demonstrated.
提出了一种新型的双模式光纤干涉仪，该干涉仪采用液晶包覆光纤作为模式滤波器。液晶包覆光纤可以传导二阶模式之一TE01，而泄漏出其他的TM01和HE21模式。因此，两个空间模式，即基模HE11和二阶模式TE01，作为干涉仪的两个臂来检测外部扰动。展示了使用该干涉仪检测20至100摄氏度温度范围时获得的实验结果。
