Resources Contact Us Home
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 and system for modularized configurable connector system for ethernet applications
Digital camera supporting intelligent self-timer mode and method of controlling the same
Method and apparatus for wireless transmission of diagnostic information
System and method for confirming delivery of an electronic message
Developing device
Receiver and transmitter receiver system
Radio frequency splitter
  Randomly Featured Patents
Stable hydrophobic topical herbal formulationn
Inverse multiplexer
Wrist watch
Wall shelf
Segregated slab structural products
Method of stretching an optical fiber preform with monitoring the diameter at two locations
Emulsion polymerization process for producing vinyl dispersion resins
Vacuum generating apparatus including liquid ring pump, pre-separator, two heat exchangers and fine separator
Signal modulation methods and apparatus
Positive column tubular PDP