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 apparatus and electronic apparatus
Method of using nutritional compounds dihydroquercetin (taxifolin) and arabinogalactan in combination with dihydroquercetin (taxifolin) to reduce and control cardiometabolic risk factors assoc
Ultrathin fluid-absorbent cores
Wideband antenna
Light emitted diode
Automated macular pathology diagnosis in three-dimensional (3D) spectral domain optical coherence tomography (SD-OCT) images
Dyes and methods of marking biological material
  Randomly Featured Patents
Delivery of voice data from multimedia messaging service messages
Upper thread take-up levers for sewing machines
Opposite substrate for liquid crystal display panel with particular microlenses and layered light shields, and method of fabricating the same
User-interface for a projection device
Laser recording/reproducing apparatus for an optical disk having a driving circuit for maintaining a servo signal at a predetermined level
Dryer apparatus for floating a running web and having baffle means for spent return air
Media on demand via peering
Recess contour gauge
Method and apparatus for fabrication of high gradient insulators with parallel surface conductors spaced less than one millimeter apart