Fiber optic sensor having mandrel wound reference and sensing arms
First Claim
1. A method for forming a fiber optic sensor, comprising the steps of:
- providing a first mandrel section having a first longitudinal slot therein;
placing a reference fiber within the slot;
winding a sensing fiber around the first mandrel;
providing a second mandrel section having a second longitudinal slot therein;
placing a spacer between the first and second mandrel sections;
winding the sensing fiber and the reference fiber around the spacer; and
placing the reference fiber in the second longitudinal slot; and
winding the sensing fiber around the second mandrel section.
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Accused Products
Abstract
A fiber optic sensor is formed by providing a first mandrel section having a first longitudinal slot therein, placing a reference fiber within the slot and winding a sensing fiber around the first mandrel. The sensor includes a second mandrel section having a second longitudinal slot therein and a spacer between the first and second mandrel sections. The sensing fiber and the reference fibers are wound around the spacer, and then the reference fiber is placed in the second longitudinal slot. The sensing fiber is wound around the second mandrel section. The sensor may include additional mandrels and spacers to form additional sections. A plurality of sensing coils may be formed on each mandrel section.
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Citations
14 Claims
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1. A method for forming a fiber optic sensor, comprising the steps of:
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providing a first mandrel section having a first longitudinal slot therein; placing a reference fiber within the slot; winding a sensing fiber around the first mandrel; providing a second mandrel section having a second longitudinal slot therein; placing a spacer between the first and second mandrel sections; winding the sensing fiber and the reference fiber around the spacer; and placing the reference fiber in the second longitudinal slot; and winding the sensing fiber around the second mandrel section. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A fiber optic sensor, comprising:
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a first mandrel section having a first longitudinal slot therein; a reference fiber placed within the first longitudinal slot; a sensing fiber wound around the first mandrel section; a spacer positioned adjacent an end of the first mandrel section with the sensing fiber and the reference fiber being wound together around the spacer; and a second mandrel section positioned adjacent the spacer such that the spacer is between the first and second mandrel sections, the second mandrel section having a second longitudinal slot therein, the reference fiber being placed in the second longitudinal slot and the sensing fiber being wound around the second mandrel. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification