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
Power supply device
Display control device, display control method, and touchpad input system
Personalized dashboard architecture for displaying data display applications
Method for detecting directions of regularity in a two-dimensional image
Control device of hybrid vehicle
Display for displaying three-dimensional images and method for displaying three-dimensional images
PMI feedback with codebook interpolation
  Randomly Featured Patents
Apparatus and method for determining a prominent tempo of an audio work
Method and device for cooling, preserving and safely transporting biological material
Busway joint parameter detection system
Illuminated mailbox
Multilayer capacitor
Radio communication device, demodulation method, and frequency deflection correction circuit
Heat storage tank
Original reading device
Circuits, systems and methods for vertical and horizontal light beam alignment
Bis-sulfonamide hydroxyethyl-amino retroviral protease inhibitors