Optical waveguides – Optical waveguide sensor – Including physical deformation or movement of waveguide
Patent
1996-04-01
1998-10-06
Lee, John D.
Optical waveguides
Optical waveguide sensor
Including physical deformation or movement of waveguide
G02B 600, G01B 1114
Patent
active
058189823
ABSTRACT:
A new class of fiber optic sensors based on nonlinear buckling of fibers and optical bend loss provide intrinsic, all-fiber displacement sensors which exhibit several unique properties. Primary among them is a sensing range from less than 1 .mu.m to several mm, which is convenient for many structural monitoring applications. This sensing range is also very convenient for many actuator and lever arm sensing applications. In addition, the sensors exhibit a very low temperature dependence of the response, and are easily configurable for a variety of novel applications. They may be implemented with single-mode, few mode, or highly multimode fibers, including plastic optical fiber (POF). Both step index and graded index profile fibers produce useful sensors with differing response characteristics.
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Voss Karl Friedrich
Wanser Keith Herbert
Kang Ellen E.
Lee John D.
Tachner Leonard
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