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Abstract
Abstract A dual-channel surface plasmon resonance (SPR) fiber sensor for detecting the refractive index and temperature has been presented in this paper. The fiber is polished on both sides to form two planes, and on one side, a refractive index measurement channel is formed by coating MoS2 film on the surface of a silver film. On the other side, a polydimethylsiloxane (PDMS) layer is coated on the surface of the silver film as the temperature sensing channel. The results showed that the sensor has a maximum spectral sensitivity of 23000 nm/RIU at a liquid RI of 1.333-1.415 and a maximum spectral sensitivity of 12.3 nm/℃ at a temperature of -20 °C to 90 °C. The results show that this sensor, with high sensitivity and wide-range detection, has important applications in the fields of organic chemistry, modern medicine and environmental detection. It also has a momentous reference significance for the design of SPR sensors that can realize multiparameter sensing.
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