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
Binary-to-gray converting circuits and gray code counter including the same
Out-of-order load/store queue structure
Field emission cathode structure
Backup and recovery of distributed storage areas
Biaxially oriented film which could be thermally laminated with paper and other substrates
Process for preparation of Efavirenz
Systems and methods for restoring images
  Randomly Featured Patents
Ceiling fan
Image upscaling technique
Starter generator system for a tip turbine engine
Battery powered circular saw
Disinfection and sterilisation of mussels, crustacea and fish
DNA sequences of banana bunchy top virus
Method for manufacturing a cylinder for two-stroke internal combustion engine and the cylinder manufactured thereby
Positioning reel
Bi-directional isolator
Method and apparatus for controlling a warming therapy device