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
Systems and methods for location sensitive alerts in a mobile communication network
Sensor-based user interface control
Portable electronic device, smartcard and control method for portable electronic device
Spine implant insertion device and method
Swiveling chair with electrical pass-through
Chewable, suckable and swallowable tablet containing a calcium-containing compound as an active substance
Salts of bicyclo-substituted pyrazolon azo derivatives, preparation method and use thereof
  Randomly Featured Patents
Gates
Method for packet flow control using credit parameters with a plurality of limits
Drum brake spring clip with squealer band retainer
Method and system for time synchronization in communication networks
System and method for creating a wireless picocell
Semiconductor light-emitting element and method for fabricating the same
Image processing device
Video display processor with pixel by pixel hardware scrolling
Offset printing machine
Maternity exercise garment