Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optical amplifier-integrated super luminescent diode and external cavity laser using the same










Image Number 4 for United States Patent #7688870.

Provided is a super luminescent diode having low power consumption due to low threshold current and a high output power in low-current operation, which is suitable for an external cavity laser. The super luminescent diode for use in the external cavity laser is divided into a super luminescent diode (SLD) region and a semiconductor optical amplifier (SOA) region to provide a light source having a low threshold current and a nearly double output power of a conventional SLD.A super luminescent diode-integrated reflective optical amplifier includes a substrate that has a super luminescent diode (SLD) region and a semiconductor optical amplifier (SOA) region for amplifying light generated from the SLD region, an optical waveguide that has a buried heterostructure, the buried heterostructure including an active layer extending over the SLD and SOA regions on the substrate and tapered in the SOA region; a current blocking layer formed around the active layer for blocking a current flow to layers other than the active layer, the current blocking layer including a stack of semiconductor layers having different conductivity types; and a clad layer formed on the optical waveguide and the current blocking layer.








 
 
  Recently Added Patents
Enabling improvement in cellular network coverage
Automatic setup of reflector instances
Containers having radio frequency identification tags and method of applying radio frequency identification tags to containers
Multi display device and method of controlling the same
Method of fabricating CIGS by selenization at high temperature
Method and devices for handling access privileges
External preparation composition for skin comprising ginseng flower or ginseng seed extracts
  Randomly Featured Patents
Arrangement for heating the operator's cabin of a machine driven by an internal combustion engine
Photoresist compositions particularly suitable for short wavelength imaging
Amorphous rare earth oxides
Method and apparatus for providing a synchronous communication environment
Dispenser for church communion cups
Tractor mounted log splitter
Micro-speaker
Semiconductor memory device
ROM type semiconductor memory device with large operating margin
Scale