Resources Contact Us Home
Optical fiber sensor utilizing a swellable detector material

Image Number 2 for United States Patent #5757988.

An optical fiber sensor for inducing a microbend in an optical fiber in the presence of a detectable fluid such as water includes a chamber with an expansible block located therein. When water enters the chamber, the block expands in a particular direction to move a pusher bar which, in turn, moves a puller wire to bend the fiber at a location remote from the chamber. A gap may initially be provided between the expansible block and the pusher bar so that the presence of water vapor within the chamber will not move the pusher bar but the presence of liquid water will.

  Recently Added Patents
Method for combining images and magnetic resonance scanner
Power supply device
System, method and apparatus for pausing multi-channel broadcasts
Multiple secure elements in mobile electronic device with near field communication capability
Waterproof wound protector
Gestures for presentation of different views of a system diagram
Bi-directional switch using series connected N-type MOS devices in parallel with series connected P-type MOS devices
  Randomly Featured Patents
Method of function activation on a bridge system
Lead frame casing
Notched backpack for domesticated animals
Water bed heater
Isolation regions
Memory management method and computer using the method
Apparatus for the shaping and transferring of glass articles or other materials
Process for therapeutic treatment
Thiocarbonylthio compound and free radical polymerization employing the same
Data transmission method, computer-readable medium, and data transmission apparatus