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
Tranverse in-core probe monitoring and calibration device for nuclear power plants, and method thereof
Microporous membranes and methods for producing and using such membranes
Discharge lamp comprising coated electrode
Method of inspecting wafer
Light modulators and optical apparatuses including the same
Display screen with graphical user interface
  Randomly Featured Patents
Tokenless electronic transaction system
Image input apparatus
Liquid transport apparatus
Liquid loop with multiple pump assembly
Offset stackable pass-through signal connector
Plasma processing apparatus including a plurality of plasma processing units having reduced variation
Jewelry piece
Machine having a card processing assembly
Preparation of substituted piperidines