30 November 2012 Highly sensitive temperature measurement based on polymer-coated single-mode, multimode, single-mode, fiber structure
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Abstract
We propose a way to enhance the temperature sensitivity of single-mode-multimode-single-mode (SMS) fiber structure, by replacing the cladding of silica multimode fiber with a polymer coating. Based on the mode expansion method, we analyze transmission characteristics of the polymer-coated SMS fiber structure and optimize design parameters for sensing. Then we do experiments and verify theoretical analysis. By using the optimized parameters in sample fabrication, a temperature sensor is obtained with an easily detected and demodulated transmission spectrum; and then by monitoring valley wavelength shifts, a measuring sensitivity of about 706 pm/°C is achieved.
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Linlin Xue, Linlin Xue, Yujuan Zhang, Yujuan Zhang, Di Che, Di Che, Qijin Zhang, Qijin Zhang, Li Yang, Li Yang, } "Highly sensitive temperature measurement based on polymer-coated single-mode, multimode, single-mode, fiber structure", Proc. SPIE 8561, Advanced Sensor Systems and Applications V, 85610H (30 November 2012); doi: 10.1117/12.2000438; https://doi.org/10.1117/12.2000438
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