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Temperature Sensor
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Setup + Functionality
The fibre optic temperature sensor consists of a bifurcated fibre optic probe with a micro optical cuvette made of GaAs (gallium arsenide). Having a wave length of 850 nm and more GaAs becomes optical transmission. This is due to the position of the band edge in the material. The position of the band edge is dependent on the temperature and shifts about 0.4 nm per Kelvin. The measurement instrument contains a light source and a device which is used for the spectral detection of the band edge's position. From this the temperature is calculated. The probe consists completely of non metallic material.
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