Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Dynamic controller for a multi-channel optical amplifier










Image Number 5 for United States Patent #6535330.

A dynamic controller for a multi-channel EDFA-type optical amplifier is provided that is capable of providing a substantially tilt-free output over a range of selectable gain set points. The dynamic controller includes a variable optical attenuator coupled between the two amplification coils of the EDFA amplifier, and a control circuit that instructs the attenuator of an amount that each channel should be attenuated to achieve a tilt-free output at a selected gain point. The controller further includes a gain controller and a tilt controller connected to the control circuit of the variable optical attenuator for providing signals indicative of an average amount of per channel attenuation and a relative amount of per channel attenuation necessary to achieve a selected gain set point while reducing or eliminating tilt, respectively.








 
 
  Recently Added Patents
Control apparatus for autonomous operating vehicle
Method for the synthesis of an array of metal nanowire capable of supporting localized plasmon resonances and photonic device comprising said array
Use of tris(hydroxymethyl) aminomethane for the stabilization of peptides, polypeptides and proteins
Diagnostic data interchange
Universal handle extension for unloading butterfly valve for tank trailer or other vehicle
Photoelectric conversion module
Wireless updating of hearing devices
  Randomly Featured Patents
Wireless communications device
Optical encoder device comprising a moveable slit plate and a stationary slit plate
Media roll winder for digital web press
Method and system of automating internet interactions
Auto-sampler and feed chute for an asphalt plant
Three-level detector without standby current
Snow guard device
Receiver for shot gun
Image recording apparatus that controls medium feed timing according to drive data supply to printheads
Magnetic recording medium containing a Cr(HfO.sub.2) or Cr(ZrO.sub.2)