Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
Opt Lett. 2010 Dec 1;35(23):3985-7. doi: 10.1364/OL.35.003985.
We investigated the dependences of Brillouin frequency shift (BFS) on strain and temperature in a perfluorinated graded-index polymer optical fiber (PFGI-POF) at 1.55 μm wavelength. They showed negative dependences with coefficients of -121.8 MHz/% and -4.09 MHz/K, respectively, which are -0.2 and -3.5 times as large as those in silica fibers. These unique BFS dependences indicate that the Brillouin scattering in PFGI-POFs has a big potential for strain-insensitive high-accuracy temperature sensing.
我们研究了在 1.55μm 波长下，掺氟渐变折射率聚合物光纤（PFGI-POF）中布里渊频移（BFS）对应变和温度的依赖关系。它们分别表现出与应变和温度的负相关关系，其系数分别为-121.8MHz/%和-4.09MHz/K，分别是石英光纤的-0.2 倍和-3.5 倍。这些独特的 BFS 依赖关系表明，PFGI-POF 中的布里渊散射在应变不敏感的高精度温度传感方面具有很大的潜力。
