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Method and apparatus for optical isolation in high power fiber-optic systems

  • US 7,308,171 B2
  • Filed: 11/16/2005
  • Issued: 12/11/2007
  • Est. Priority Date: 11/16/2005
  • Status: Active Grant
First Claim
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1. An optical isolator, comprising:

  • an input module including an input fiber, an input polarizer, and an input collimator;

    a state of polarization rotator module; and

    an output module including an output fiber having a facet, a beam expanding device, an output polarizer, and an output collimator, the beam expanding device configured to prevent damage to the facet of the output fiber due to back-reflected light in the output fiber.

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