Title:
【発明の名称】光ファイバグレーティング測定装置および光ファイバグレーティング測定方法
Document Type and Number:
Japanese Patent JP3316204
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus and a method for optical fiber grating measurement which can measure a correct distortion amount with a resolutions in the order of millimeter even at a place where the temperature rapidly changes, such as outdoors. SOLUTION: A wavelength control part 8 performs a synchronization control to make an transmission wavelength of a variable wavelength laser 1 synchronize a refection peak wavelength of a reflected light signal from a network analyzer 2, and outputs the variation of the wavelength required for the synchronization of the transmission wavelength of the variable wavelength laser 1 to a temperature/distortion conversion part 9. The variation of the wavelength required for the synchronization of the transmission wavelength of the variable wavelength laser 1 from the wavelength control part 8 is converted to temperature using a prepared variation of wavelength-temperature conversion table.
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Inventors:
Shoji Fujitomi
Kazumasa Nemoto
Kazumasa Nemoto
Application Number:
JP2000129683A
Publication Date:
August 19, 2002
Filing Date:
April 28, 2000
Export Citation:
Assignee:
OCC Inc.
International Classes:
G01K11/12; G01B11/00; G01B11/16; G01D5/26; G01D5/353; G01K11/32; G01L1/24; G08C15/00; (IPC1-7): G01K11/32; G01B11/16; G01D5/26; G01L1/24
Domestic Patent References:
| JP10141922A | ||||
| JP1048065A | ||||
| JP2191000A | ||||
| JP8240451A | ||||
| JP1172353A |
Other References:
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Attorney, Agent or Firm:
Shiroyuki Hori