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
Drug delivery system
Closed-loop adaptive adjustment of pacing therapy based on cardiogenic impedance signals detected by an implantable medical device
3D image generating method, 3D animation generating method, and both 3D image generating module and 3D animation generating module thereof
Systems and methods for automobile accident claims initiation
Enhancing user experiences using aggregated device usage data
Negative electrode material for non-aqueous electrolyte secondary battery, method for manufacturing negative electrode material for non-aqueous electrolyte secondary battery, non-aqueous elect
Light source lighting device including a constant-current supply that is connected to a light source and supplies a constant current of a substantially constant magnitude to the light source,
  Randomly Featured Patents
D-type master-slave flip-flop
Expandable manifold
Multiple stimulus reversible hydrogels
Coupler for optical fiber cables
Floor lamp having low light level replaceable bulb
Cosmetic compositions comprising at least one silicone copolymer and at least one cationic polymer, and uses thereof
Column base structure
Mouse pointing device
Composites of polyvinylidene fluoride alloys and thermoplastic polymers and their preparation
System and method of enabling TCP splice with a content-based charging proxy