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
Motor and disk drive apparatus
Method of forming wafer level mold using glass fiber and wafer structure formed by the same
Managing wear leveling and garbage collection operations in a solid-state memory using linked lists
Changing sound alerts during a messaging session
Electronic device, information processing method, and storage medium
Vending machine
Software self-checking systems and methods
  Randomly Featured Patents
Failsafe and tolerant driver architecture and method
Comparator, sense amplifier
Thin film transistor, method of fabricating the same, and organic light emitting diode display device having the thin film transistor
Concrete and resin swimming pool wall
Temperature clock for x-ray tubes
Air vent damper apparatus
Chemical treating block for a toilet tank
Two level sewing system
System and method to automatically provide an electronic consumer rebate
Radio communication apparatus and transmission power control method having first retransmission phase and second retransmission phase