Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
All-optical holographic code division multiple access switch










Image Number 13 for United States Patent #6844947.

A technique for processing optical input signals to produce optical output signals using only a single hologram for a plurality of circularly shifted code words used to encode the input signals. A spatial light modulator coupled to the each of the optical input signals encodes a corresponding one of the input optical signals, and the optical signals are linear combined for further processing. A matched filter composed of the single hologram receives the linear combination, and a two-dimensional microlens arrangement coupled to the matched filter emits each of the optical output signals from a corresponding microlens in the arrangement. Switching is engendered by controlling each spatial light modulator to thereby direct each input signal to the desired one of the microlens in the arrangement.








 
 
  Recently Added Patents
Mobile camera localization using depth maps
Recombinant negative strand virus RNA expression systems and vaccines
Polypeptides having beta-glucosidase activity and beta-xylosidase activity and polynucleotides encoding same
Wire guide
Etching apparatus and methods
Managing job execution
Method and system for monitoring and treating hemodynamic parameters
  Randomly Featured Patents
Power tool stand/workbench
Flyback voltage control
Method of determining thickness of magnetic pipe by measuring the time it takes the pipe to reach magnetic saturation
Analytical method for detecting alkaline sphingomyelinase and kit for use in such method
Method and apparatus for treatment of atrial fibrillation
Tape cassette apparatus with plural intermediate positions
Exposure carriage for a copying machine
Gasket and display assembly for an electronic mobile device
Clothes fabric type blend detection method and apparatus
Package for different single-use articles