多模光纤
材料科学
聚二甲基硅氧烷
渐变折射率纤维
芯(光纤)
纤维
折射率
灵敏度(控制系统)
光纤传感器
光纤
单模光纤
光子晶体光纤
温度系数
光学
保偏光纤
热膨胀
光路长度
光电子学
物理
复合材料
电子工程
工程类
作者
Lu Cai,Yin Liu,Sheng Hu,Qiang Liu
摘要
Abstract A fiber optics structure for temperature measurement is presented and demonstrated. This structure is composed of segments of single mode fiber (SMF), no‐core fiber (NCF), hollow core fiber (HCF), and cured polydimethylsiloxane (PDMS) which is inserted into the cavity of HCF. Owning to the high thermal expansion coefficient (TEC) and thermo‐optic coefficient (TOC) of PDMS, the optical path length and the effective refractive index (RI) all register much larger change, leading to the higher temperature sensitivity of the sensor. Simulation showed similar result with experiment. The temperature sensitivity of 580.6 pm/°C is achieved in the range of 28°C to 50°C.
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