Transducer for converting acoustic energy directly into optical energy
Optical strain gauge
Microbending of optical fibers for remote force measurement
Optical wave guide band edge sensor and method
Electrically passive fiber optic position sensor
Microbend optic sensor with fiber being sewn thereto in a sinuously looped disposition
Optical rotary microbend position sensors having a rotatable movable shaft
Fiber optic bending and positioning sensor including a light emission surface formed on a portion of a light guide
Temperature compensation for fiber optic sensors
Optical line monitoring method and an apparatus permitting simultaneous line monitoring and information communication Patent #: 5396569
ApplicationNo. 625202 filed on 04/01/1996
US Classes:385/13Including physical deformation or movement of waveguide
ExaminersPrimary: Lee, John D.
Assistant: Kang, Ellen E.
Attorney, Agent or Firm
International ClassesG02B 006/00
AbstractA 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 μm 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.