Fiber-optic strain gauge with attached ends and unattached microbend section
Patent
·
OSTI ID:7067051
A strain gauge is made of an optical fiber into which quasi-sinusoidal microbends have been permanently introduced. The permanent microbends cause a reduction in the fiber's optical transmission, but, when the gauge is attached to a substrate that is subsequently strained, the amplitude of the deformations will diminish and the optical transmission through the fiber will increase. An apparatus and process for manufacturing these microbends into the optical fiber through a heat-set process is employed; this apparatus and process includes a testing and calibration system. 5 figs.
- DOE Contract Number:
- AC04-76DP00789;
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- A; US 5132529
- Application Number:
- PPN: US 7-571358
- OSTI ID:
- 7067051
- Country of Publication:
- United States
- Language:
- English
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