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
System and method for producing statistically valid assay means and ranges for quality control materials
Imaging lens with three lens elements, and electronic apparatus having the same
Digital signal processing apparatus, liquid crystal display apparatus, digital signal processing method and computer program
Solution based precursors
Hepodxilin analog enantiomers
Broadband optical network apparatus and method
Searchlight
  Randomly Featured Patents
Liposome encapsulated hemoglobin
Transitional image for a portion of a display screen
Apparatus for electromagnetically measuring the ovalization of a ferromagnetic pipe
Catalyst and reverse disproportionation process
Dual stability seal skirt system for air cushion vehicle
Oscillation suppression device
Method of dimerization of olefins
Marker detection apparatus and marker detection method
Delayed release pharmaceutical formulation containing amoxycillin and potassium clavulanate
Electric lamp failure indicator circuit