Temperature sensor and method for measuring a temperature change

摘要

A temperature sensor is provided which comprises a measurement light source for generating measurement light and two optical waveguides. The two optical waveguides are arranged such that they respectively receive a measurement light portion of the measurement light and that the measurement light portions are superimposed after passing through the optical waveguides. Furthermore, the two optical waveguides have an optical property with different temperature dependency.

主权项

1. A temperature sensor comprising:
a measurement light source for generating measurement light; and two optical waveguides, the two optical waveguides being arranged such that they respectively receive a measurement light portion of the measurement light and that the measurement light portions are superimposed after passing through the optical waveguides, and the two optical waveguides having an optical property with different temperature dependency, wherein the optical waveguides have respective output-side ends for the exit of the measurement light portions after passing through the optical waveguides and the output-side ends are arranged so close to one another that after exiting from the optical waveguides the measurement light portions interfere with one another to generate a stripe pattern on a detection surface, wherein the stripe pattern is indicative of the temperature sensed by the sensor.