Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optical amplifier for use in optical communications equipment










Image Number 15 for United States Patent #6373623.

The output level of pumping light supplied from a pumping light source is varied using a variable attenuator, which is controlled by a variable attenuator driver circuit. By separating a portion containing the pumping light source from a portion containing an amplification medium, it becomes possible to prevent heat emitted by the pumping light source from adversely affecting the amplification medium. By arranging the portion containing the pumping light source such that a pumping light source or sources can be added when necessary, optical transmission system requirements of having more pumping light sources for system upgrade can be accommodated readily. By packaging portions containing amplification media, an optical amplifier can be made small.








 
 
  Recently Added Patents
Method and system for providing geohazard information to customers
Apparatus, electronic component and method for generating reference voltage
Identification of biomarkers in biological samples and methods of using same
Etching method, etching apparatus, and computer-readable recording medium
Contactless electrical connector for an induction sensor, and sensor including such a connector
High performance design rule checking technique
Food safety printer
  Randomly Featured Patents
Article of furniture
Mobility aware performance evaluation
Production of pulp slurries employing isatoic anhydride
Additives to chromium catalyst mix tank
System and method for configuring, sequencing and viewing joins in a query
Suspension structure for an automotive vehicle
Baseball themed tent
Use of Diels-Alder adducts of dihydro-nitrogen heterocyclic phosphoramidates as corrosion inhibitors
Graphics input apparatus
Treatment of residual earth drilling muds