Patents Examined by Phanh T. H. Palmer
  • WDM channel equalization and control
    Patent number: 6487336
    Abstract: Devices that couple variable attenuators to a single WDM multiplexer to individually adjust and control the power levels of different WDM channels, e.g., substantially equalizing the power levels of the channels. Optical reflection and in-fiber variable attenuators are implemented to simplify the device structure and reduce cost.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: November 26, 2002
    Assignee: General Photonics Corporation
    Inventor: Xiaotian Steve Yao