Resources Contact Us Home
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
Display system with mounting assemblies and associated methods
Fixture for camera attachments
Dielectric insulation medium
Audio and music data transmission medium and transmission protocol
Titanium compounds and complexes as additives in lubricants
Mechanical and moisture protection apparatus for electronic devices
Method, apparatus or computer program for changing from scheduled to unscheduled communication modes
  Randomly Featured Patents
Raised source/drain with silicided contacts for semiconductor devices
Polymeric articles having antistatic properties and methods for their manufacture
Nanofiber packed beds having enhanced fluid flow characteristics
Passive IR oil rate sensor
Analog to digital converter that decodes MSBS from internal voltages of two folder circuits
Utilizing persistent interference information for radio channel selection
Batting swing trainer with movable slide
Soil remediation method
Method and apparatus for driving LED light sources for a projection display
Elastic band