Radiating and receiving arrangement for a fiber-optic sensor

H - Electricity – 04 – B

Patent

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Details

H04B 10/12 (2006.01) G01D 5/26 (2006.01) G02B 6/28 (2006.01) G02B 6/34 (2006.01) G02B 6/42 (2006.01)

Patent

CA 2053689

Abstract of the Disclosure A transmitting and receiving arrangement for fiber-optic sensors includes a first radiation source L1 having radiation which is conducted via an optical switch having a wavelength-dependent transmission or reflection filter into the fiber FA going to the sensor head. The radiation returning from the fiber is conducted via the optical switch to a first detector D1. The arrangement further includes: a second detector D2 which is permanently optically coupled into the radiation path of the first radiation source L1; and, a second radiation source L2, which is switched on alternately to the first radiation source L1 and both detectors D1, D2 are subjected to the radiation of this radiation source. 23

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