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
Methods and devices for creating, compressing and searching binary tree
Cable preparation tool
Wireless device with extendable antenna
DNA promoters and anthrax vaccines
Display apparatus
Quantum dot template for fast and simultaneous detection of different infectious agents
Wafer recycling method
  Randomly Featured Patents
Catalyst that comprises a clay and an element of group VB, and its use in hydrocraking of petroleum feedstocks that contain hydrocarbon
User interface localization conflict indication
Method of storing and accessing header data from memory
Organic electroluminescence device, novel platinum complex compound and novel compound capable of being a ligand thereof
Bottle
Low profile handle
Connector assembly
Dewatering process
Wire degradation testing system
Process for determining the fuel consumption or the operating status of combustion engines