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










Image Number 5 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
Fail-safe upgrading of portable electronic device software
Microporous membranes and methods for producing and using such membranes
Intralevel conductive light shield
Computer product, information retrieval method, and information retrieval apparatus
UV liquid treatment system
Support tray for server
Mobile terminal including stellar body watching hookup communications function
  Randomly Featured Patents
Electronic countermeasures system and method
Silver removal with halogen impregnated activated carbon
Mesh-chair cloth
Image transmission method and computer readable image data structure
Apparatus for rapidly cooling elongated metallic products during their movement in longitudinal direction by a liquid cooling jet and for removing the latter from the surface of the product af
Method and apparatus for optimizing the presentation of audio visual works
Charged particle irradiation apparatus
Tent pole tip
Protective structure for jacket for rotatable magnetic recording media
Temperature compensated passive vibration absorber