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US 2013/0258342 A1Published application
Temperature sensor and method for measuring a temperature change
AssigneeCarl Zeiss SMS GmbH
InventorDietmar Schnier
Life of this patent
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Abstract
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.
Claims20
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.
A method for measuring a temperature change comprising:
- arranging two optical waveguides such that they are subjected to the same temperature fluctuations;
- generating measurement light and introducing one respective measurement light portion of the measurement light into each of the two optical waveguides;
- superimposing the two measurement light portions after passing through the optical waveguides;
- and
- recording a light intensity generated by the superimposition.
2 more elements
Dependencies are inferred from the claim text.