Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optical FM source based on intra-cavity phase and amplitude modulation in lasers










Image Number 17 for United States Patent #7907648.

A laser is disclosed including a gain section having a distributed feedback grating imposed thereon. An absorption section is embedded in the gain section such that the first and second portions of the distributed feedback grating extend on either side of the electro-absorption section. A controller imposes a substantially DC bias signal on the first and second gain electrodes and imposes a modulation signal encoding digital data on the modulation electrode to generate a frequency modulated signal. In some embodiments, the first and second portions are biased above the lasing threshold and the absorption section is modulated below the lasing threshold to modulate loss in the absorption section.








 
 
  Recently Added Patents
Post-processing device and image forming system
System and method for providing security in browser-based access to smart cards
Light modulators and optical apparatuses including the same
Active matrix substrate, method for manufacturing same, and liquid crystal display apparatus
Panel for decoration
Prompt gap varying optical filter, analytical instrument, optical device, and characteristic measurement method
Organic compounds
  Randomly Featured Patents
Method, computer program product, and apparatus for static timing with run-time reduction
Suction fluid collector for medical applications
Superregenerative receiver
Identity verification method using a central biometric authority
Upright portable electric heater
Tire with segmented belt
Arc fault identification using model reference estimation
Methods of treating or ameliorating the symptoms of venomous bites and stings
Extendable/retractable foot/leg rest for a wheelchair
Packaging for patches