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- W2057604968 abstract "After several decades, the development and application of absorptive fiber semiconductor temperature sensor have been slowed down for the difficulty to satisfy the critical requirement of the special wavelength and broadband lightsource. On the other hand, temperature-dependent refractive index, i.e., thermal-optic effect of the semiconductor materials has not gained much attention beyond the semiconductor processing industry. With a much larger temperature-dependent refractive index than the common optical materials, such as glass and quartz, many semiconductor are also popular coating materials on fiber. Taking advantage of the interaction of large temperature-dependent refractive index and temperature-dependant absorption coefficient of semiconductor, we manage to build a very small, sensitive, simple and low cost fiber temperature probe operating at communication wavelength. We develop a sensor model for an optical fiber-germanium (Ge) film type temperature sensor based on the modified optical film theory, which involves temperature-dependent absorption below infrared transparent window of Ge as second major cause for reflectivity change beside thermal optical effect. Investigation of the feasibility and sensitivity of the fiber-film probe has been carried out theoretically and experimentally within the temperature regime of -20-120°C, which is the most used temperature range for industry monitoring. A sensitivity of reflectivity change about 0.001/°C has been demonstrated by the experimental results of the novel designed sensor. Further discussion on the potential of sensitivity and further application are presented." @default.
- W2057604968 created "2016-06-24" @default.
- W2057604968 creator A5017335171 @default.
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- W2057604968 date "2010-11-03" @default.
- W2057604968 modified "2023-09-23" @default.
- W2057604968 title "A fiber optic-film temperature sensor taking advantage of thermal optical effect as well as temperature-dependent absorption of semiconductor" @default.
- W2057604968 doi "https://doi.org/10.1117/12.867461" @default.
- W2057604968 hasPublicationYear "2010" @default.
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