Title:
BRILLOUIN SPECTRUM MEASURING METHOD AND BRILLOUIN SPECTRUM MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/123080
Kind Code:
A1
Abstract:
Provided are a Brillouin spectrum measuring method and a measuring device having a
structure for accurately measuring a parameter of a Brillouin spectrum at a predetermined
section of an optical fiber. The measuring method uses an optical fiber unit
having a first and a second optical fiber connected in series via a connection portion.
The first and the second optical fiber have the Brillouin spectrum having a peak
frequency difference not smaller than a predetermined frequency difference
under a predetermined temperature and at a state when a predetermined distortion
is applied while assuming respective use environments. The measuring method
measures the Brillouin spectrum obtained in accordance with a pump light supplied
to the optical fiber unit and specifies the connection portion between the first
and the second optical fiber according to the measurement data on the measured
Brillouin spectrum.
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Inventors:
YAMAMOTO YOSHINORI (JP)
Application Number:
PCT/JP2007/058266
Publication Date:
November 01, 2007
Filing Date:
April 16, 2007
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
YAMAMOTO YOSHINORI (JP)
YAMAMOTO YOSHINORI (JP)
International Classes:
G01D5/353; G01B11/16; G01K11/12; G01M11/00
Foreign References:
| JPH11142293A | 1999-05-28 | |||
| JPH11287670A | 1999-10-19 | |||
| JP2004317436A | 2004-11-11 | |||
| JPH08125607A | 1996-05-17 | |||
| JPH11287670A | 1999-10-19 |
Other References:
NIKLES ET AL.: "Brillouin Gain Spectrum Characterization in Single-Mode Optical Fibers", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 15, no. 10, October 1997 (1997-10-01), pages 1842 - 1851
Attorney, Agent or Firm:
HASEGAWA, Yoshiki et al. (Ginza First Bldg.10-6, Ginza 1-chom, Chuo-ku Tokyo 61, JP)
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