Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Semiconductor laser










Image Number 3 for United States Patent #8488637.

A semiconductor laser includes a light emission end facet; a first optical waveguide extending in a predetermined optical-axis direction, the first optical waveguide being optically coupled to the light emission end facet; a ring resonator having a plurality of periodic transmittance peak wavelengths, the ring resonator being optically coupled to the first optical waveguide; a plurality of gain waveguides that generate light by injection of current; an optical coupler portion that optically couples the first optical waveguide to each of the plurality of gain waveguides; and a plurality of second optical waveguides including diffraction gratings, the plurality of second optical waveguides being respectively optically coupled to the plurality of gain waveguides. Also, each of the diffraction gratings in the plurality of second optical waveguides has a different reflection band.








 
 
  Recently Added Patents
Blended block copolymer composition
System and method of detecting and locating intermittent and other faults
Manufactured product configuration
Enhanced telephony services
System and method for a driver circuit with a referenced control signal
Field device configuration system
Method and system and policy server for guaranteeing data not to be interrupted
  Randomly Featured Patents
Optical fiber coating compositions
Systems and methods for an impact location and amplitude sensor
Mobile power unit housing
Circuit configuration for generating a reference potential
Liquid dispensing nozzle having vapor recovery sealing arrangement
Universal bed covering or bed sheet apparatus
Video encoding/decoding method and apparatus
Board game apparatus
Tracking input in a screen-reflective interface environment
Brake device, as well as brake carrier and brake caliper, for such brake