Fiber-optic strain gauge with attached ends and unattached microbend section

Patent · Tue Jul 21 00:00:00 EDT 1992

OSTI ID:7067051

Weiss, J D

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): US 5132529; A
• Application Number: PPN: US 7-571358
• OSTI ID: 7067051
• Resource Relation: Patent File Date: 23 Aug 1990
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
OPTICAL FIBERS
DEFORMATION
STRAIN GAGES
DESIGN
EQUIPMENT
LIGHT TRANSMISSION
MEASURING METHODS
FIBERS
MEASURING INSTRUMENTS
440800* - Miscellaneous Instrumentation- (1990-)