Distortion measuring device, method, program, and recording...

Optics: measuring and testing – For optical fiber or waveguide inspection

Reexamination Certificate

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Reexamination Certificate

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11619406

ABSTRACT:
There is provided a distortion measuring device including a Brillouin scattered light spectrum recording unit which records a spectrum of Brillouin scattered light generated in an optical fiber as a result of supplying incident light, a peak frequency approximating unit which acquires an approximated peak frequency at which the recorded spectrum takes a maximal value, a peak frequency deriving unit which derives a peak frequency at which the spectrum takes the maximal value within a range of a frequency determined based on a magnitude of the spectrum at the approximated peak frequency, amid a distortion deriving unit which derives distortion of the optical fiber based on the derived peak frequency.

REFERENCES:
patent: 6366348 (2002-04-01), Sato et al.
patent: 2007/0171401 (2007-07-01), Ukita
patent: 2001-165808 (2001-06-01), None
patent: 2002-257592 (2002-09-01), None
English language Abstract of JP 2001-165808.
English language Abstract of JP 2002-257592.
U.S. Appl. No. 11/567,942 to Ukita, filed Dec. 7, 2006.
U.S. Appl. No. 11/571,692 to Kurosawa, filed Jan. 5, 2007.

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