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
Method for modeling and analyzing linear time invariant systems with time delays
Switching device, switch control method, and storage system
Sensor controller, navigation device, and sensor control method
Polymeric structures comprising a siloxane
Lens driving device
Light emitting device
Portion of display panel or screen with an icon
  Randomly Featured Patents
Weight-on-gear sensor
Impact modifier for high nitrile resins and impact modified nitrile resin compositions
Hydrocarbon-decomposing porous catalyst body and process for producing the same, process for producing hydrogen-containing mixed reformed gas from hydrocarbons, and fuel cell system
Managing communications settings
Toilet seat cleaning system
Front cover for a handset
High impact resistant barrier/fence
Power MOSFET having a drain heterojunction
Vertical tool rack storage device
Thermosetting aromatic resins and thermostable polymers derived therefrom