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US 2016/0097634 A1Published application
1-dimensional and 2-dimensional distributed fiber-optic strain and stress sensors based on polarization maintaining fiber using distributed polarization crosstalk analyzer as an interrogator
AssigneeGeneral Photonics Corporation
InventorsXiaotian Steve Yao, Yao Yao, Xiaojun Chen
Life of this patent
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Abstract
Techniques and devices for measuring polarization crosstalk in polarization maintaining fiber by placing the PM fiber in a 1-dimensional or 2-dimensional configuration for sensing stress or strain exerted on the PM fiber at different locations along the fiber with a high spatial sensing resolution
Claims23
An optical fiber sensor device, comprising:
- a sensor plate formed of a deformable or elastic material;
- a length of polarization maintaining (PM) fiber as a sensing element and engaged to the sensor plate at multiple engaging locations;
- an optical light source that produces probe light and is coupled to the PM fiber to deliver the probe light into the PM fiber;
- and
- a detector module coupled to receive probe light from the PM fiber and to measure the received probe light to determine a stress exerted on the sensor plate.
2 more elements
An optical fiber sensor device, comprising:
- a sensor plate configured to include a 1-demensional array of holes;
- a length of polarization maintaining (PM) fiber engaged to the sensor plate by being threaded through the holes to form sensing locations at the holes;
- an optical light source that produces probe light and is coupled to the PM fiber to deliver the probe light into the PM fiber;
- and
- a detector module coupled to receive probe light from the PM fiber and to measure the received probe light to determine a stress exerted on the sensor plate.
2 more elements
An optical fiber sensor device, comprising:
- a sensor plate configured to include a groove in a 2-dimensional pattern on one side;
- a length of polarization maintaining (PM) fiber engaged to the sensor plate by being placed in the groove to form a 2-dimensional PM fiber sensing element;
- an optical light source that produces probe light and is coupled to the PM fiber to deliver the probe light into the PM fiber;
- and
- a detector module coupled to receive probe light from the PM fiber and to measure the received probe light to determine a stress exerted on the sensor plate.
2 more elements
Dependencies are inferred from the claim text.