Title: Low cost amplifier using optical parts block
Application Number: 00134462 Application Date: 2000.12.01
Publication Number: 1311455 Publication Date: 2001.09.05
Approval Pub. Date: 2005.04.20 Granted Pub. Date: 2005.04.20
International Classifi-cation: G02F1/39
Applicant(s) Name: JDS Unifis Corp. Address:
Inventor(s) Name: Blus Niman;Garry S. Darck;Nierr Tyterbo
Attorney & Agent: jiang shixun
Abstract:
    The present invention relates to an in-line optical amplifier that can be coupled to optical fiber, wherein the amplifying medium has a substantially larger mode field than the optical fiber to which it is coupled. The present invention has realized a design to utilize a very high power pump launching a multimoded signal having approximately 1 W of pump power into a block of erbium doped glass having a mode field diameter orders of magnitude larger than the mode field diameter of erbium doped fiber. This invention provides a relatively inexpensive optical amplifier that is compatible for use in an optical fiber telecommunications system or for other uses. Advantageously, this invention provides a device that does not require unwieldy lengths of erbium doped fiber to form an amplifier.
Time: 7
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