Temperature and optical length control of optical fibers and optical waveguide devices

  • US 6,317,548 B1
  • Filed: 03/11/1999
  • Issued: 11/13/2001
  • Est. Priority Date: 03/11/1999
  • Status: Expired due to Term
First Claim
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1. An optical fiber device, comprising:

  • a first optical fiber having a first-fiber core region transmissive to optical energy of a signal wavelength and absorptive to optical energy of an excitation wavelength different from the signal wavelength, the first optical fiber comprising a concentration of dopant ions residing within the core region, the dopant ions being operable to absorb optical energy at the excitation wavelength;

    a first source of optical energy of the excitation wavelength coupled into the first-fiber core region of the first optical fiber, the first source of optical energy being operable in a first state with a first power output and operable in a second state with a second power output different from the first power output; and

    a second source of optical energy of the signal wavelength coupled into the first-fiber core region of the first optical fiber.

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