Temperature Sensor Based on Quantum Dots Solution Encapsulated in Photonic Crystal Fiber


A luminescence temperature sensor was proposed primarily based on quantum dots aqueous answer encapsulated during a photonic crystal fiber and sandwich structure by fusion splicing two multimode fibers end-to-finish. The relationships of the luminescent peak, intensity, and full-width at [*fr1]-most (FWHM) of the luminescent emission band with the temperature are investigated. A self-referenced methodology is used to optimize the relationship between intensity and temperature. The experimental results indicate that the sensitivities are 130.9pm/°C, 67pm/°C and −0.008/°C, respectively, with favorable repeatability for the luminescent peak, the FWHM, and also the self-referenced intensity within the temperature vary from −ten °C to a hundred and twenty °C.

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