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
Method of forming a power supply controller and structure therefor
Integrated circuit having a discrete capacitor mounted on a semiconductor die
Power supply system for motor vehicle
System and method for content delivery
Heat retaining device
Implantable medical devices including elongated conductor bodies that facilitate device and lead configuration variants
Support for a portable electronic device
  Randomly Featured Patents
Chemical sensor and method of making same
Emergency belting and kit
Controlled counter-drafting to reduce crop loss during ingot rolling
Acetabular rim cutter
Ink stick for a phase change ink jet printer
High overbased metal sulfurized alkyphenates
Acetabular cup body prosthesis
Grate for burning newspapers
Diskette storage container
Foot and toe washer