Yin Zhen, Geng Youfu, Li Xuejin, Tan Xiaoling, Gao Rong
Appl Opt. 2015 Jan 10;54(2):319-23. doi: 10.1364/AO.54.000319.
Novel V-groove all-fiber core-cladding intermodal interferometers fabricated by CO2 laser irradiation on a standard single-mode fiber are described. The high-order cladding modes are excited due to the special V-groove structure. The interferometers are classified as Mach-Zehnder and Michelson type based on the way they are structured. Benefiting from the large difference of thermal coefficients of the core and high-order cladding modes, both types receive high temperature sensitivity by monitoring the wavelength shift of the interference spectrum, and their responses to temperature are similar. Compared with the Mach-Zehnder interferometer, the Michelson interferometer is more compact and more flexible in application.
描述了通过在标准单模光纤上进行CO2激光辐照制造的新型V型槽全光纤芯包层间模干涉仪。由于特殊的V型槽结构，高阶包层模被激发。这些干涉仪根据其结构方式分为马赫曾德尔型和迈克尔逊型。受益于纤芯和高阶包层模热系数的巨大差异，这两种类型通过监测干涉光谱的波长偏移都具有高温度敏感性，并且它们对温度的响应相似。与马赫曾德尔干涉仪相比，迈克尔逊干涉仪更紧凑且应用更灵活。
