Invention Grant
- Patent Title: Fiber-optic sensor and method
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Application No.: US15187522Application Date: 2016-06-20
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Publication No.: US10247761B2Publication Date: 2019-04-02
- Inventor: Georg Müller , Klaus Bohnert , Andreas Frank , Philippe Gabus
- Applicant: ABB Technology AG
- Applicant Address: CH Baden
- Assignee: ABB Schweiz AG
- Current Assignee: ABB Schweiz AG
- Current Assignee Address: CH Baden
- Agency: Taft Stettinius & Hollister LLP
- Agent J. Bruce Schelkopf
- Main IPC: G01R15/24
- IPC: G01R15/24 ; G01R19/32

Abstract:
A fiber optic sensor and related method are described, with the sensor including a cross-coupling element in the optical path between a polarizing element and a sensing element, but separated from the sensing element itself; with the cross-coupling element generating a defined cross-coupling between the two orthogonal polarization states of the fundamental mode of a polarization maintaining fiber guiding light from the light source to the sensing element thus introducing a wavelength-dependent or temperature-dependent sensor signal shift to balance wavelength-dependent or temperature-dependent signal shifts due to other elements of the sensor, particularly signal shifts due to the wavelength dependence of the Faraday effect or the electro-optic effect constant.
Public/Granted literature
- US20160377660A1 FIBER-OPTIC SENSOR AND METHOD Public/Granted day:2016-12-29
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