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 and system for quantifying viewer awareness of advertising images in a video source
Semiconductor device and manufacturing method thereof
Method for evaluating performance characteristics of dental curing lights
Multi-contoured yoga support
Clamp for fence panels
Radio link monitoring (RLM) and reference signal received power (RSRP) measurement for heterogeneous networks
Auto-provisioning of network services over an Ethernet access link
  Randomly Featured Patents
Distortion control feedback loop utilizing a non-linear transfer function generator to compensate for non-linearities in a transmitter circuit
Method for supplying solder
Process for the separation of solid materials from microorganisms
Process and system for ascertaining traffic conditions using stationary data collection devices
High torque 2.75-inch rocket nozzle
Portable telex terminal case or the like
Carrier belt for wet paper web
Selective synthesis of substituted amines
Method of and apparatus for a multimode image display with a liquid crystal light valve
6-Acyloxy-1,4,6-pregnatrienes, their use as anti-inflammatory agents, methods for their manufacture, and 6-oxo-1,4-pregnadiene intermediates