Resources Contact Us Home
Tunable chromatic dispersion compensator utilizing a virtually imaged phased array and folded light paths

Image Number 19 for United States Patent #6392807.

The present invention provides an improved tunable chromatic dispersion compensator. The compensator includes: a virtually imaged phased array (VIPA); at least one reflector optically coupled to the VIPA; a mirror optically coupled to the at least one reflector; and a movable reflector holder coupled to the at least one reflector, where the movable reflector holder moves the at least one reflector such that a length of a beam path between the VIPA and the at least one reflector and the mirror is variable. The present invention uses the VIPA to produce a controlled variable degree of chromatic dispersion within a plurality of optical channels so as to compensate for unwanted chromatic dispersion in an optical communications system. Positional adjustment of the movable reflector holder permits variable control of the beam path length between the VIPA and the focusing lens. This variable change in beam path length permits variable control of the magnitude and sign of chromatic dispersion provide by the compensator.

  Recently Added Patents
Solid-state image sensing device and control method of solid-state image sensing device
Data encoding and decoding apparatus and method thereof for verifying data integrity
Active and progressive targeted advertising
Avirulent oncolytic herpes simplex virus strains engineered to counter the innate host response
Semiconductor apparatus
Key management policies for cryptographic keys
Laminar library screen
  Randomly Featured Patents
Method of enabling timing verification of a circuit design
Switching power supply device and drive circuit thereof
Image processor for performing volume rendering from voxel data by a depth queuing method
Padded underwear
Anti-allergy 1(2H)-phthalazinones
Method for chemically reducing metals in waste compositions
Method and a system for processing logic programs
Tooth loading for earth boring bits
CPP with elongated pinned layer
Wireless communication apparatus and frequency hopping method