首页|Temperature-insensitive sensor for glucose brix meas-urement based on compact spindle-shaped structure with two-mode fiber
Temperature-insensitive sensor for glucose brix meas-urement based on compact spindle-shaped structure with two-mode fiber
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A temperature-insensitive sensor for glucose brix measurement based on compact spindle-shaped structure with two-mode fiber(TMF)is proposed.Due to the bending of optical fiber caused by flame baking,some of the light en-ergy transmitted in the core leaks into the cladding area as an evanescent wave,which excites the higher-order clad-ding mode of the sensor.The experimental results show that when the length of TMF is 3 cm and the bending diameter is 4 mm,the maximum glucose brix sensitivity of the sensor is 0.368 nm/％from 0 to 21％.The sensor is insensitive to temperature from 10℃to 50℃,which can avoid the problem of temperature cross-sensitivity.A compact spin-dle-shaped sensor is a potential effective sensor with a simple structure,easy fabrication and low cost.The sensor can be used to detect glucose content in areas such as crops quality assessment and the research of pharmacy and bioengi-neering.
Engineering Research Center of Optoelectronic Devices and Communication Technology,Ministry of Education,Tianjin Key Laboratory of Film Electronic and Communication Devices,School of Integrated Circuit Science and En-gineering,Tianjin University of Technology,Tianjin 300384,China
国家自然科学基金Tianjin Enterprise Technology Commissioner ProjectState Key Laboratory of Applied Optics天津市教委科研项目
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