Back to results
US 5,164,605 AGranted
Fiber optic displacement sensor using fiber optic coil
AssigneeThe Babcock & Wilcox Company
InventorJohn J. Kidwell
Life of this patent
Estimating the term…
Abstract
A fiber optic microbend sensor employs a resilient coil (12) with an optical fiber (10) positioned therein. The coil (12) has a predetermined length and pitch. An optical signal is applied to the optical fiber (10) with the coil (12) interrogating a parameter. Any movement of the coil (12) modulates the optical signal transmitted along the optical fiber (10). Detecting means (32) measures the modulations of the optical signal for characterization of the parameter.
Claims20
A fiber optic microbend sensor, comprising:
- a resilient coil having a predetermined length and pitch with an optical fiber situated therein;
- means for applying an optical signal to said optical fiber;
- means for moving said coil in response to a parameter to cause a modulation in the optical signal transmitted along said optical fiber;
- and
- means for detecting modulations of the optical signal transmitted through said optical fiber.
2 more elements
Dependencies are inferred from the claim text.