Title:
対向伝播信号法を用いて構造を監視しイベントの位置を見つけるための装置及び方法
Document Type and Number:
Japanese Patent JP4869480
Kind Code:
B2
Abstract:
A method and apparatus for monitoring a structure and for locating the position of an event including a light source, a waveguide, and a detector means. The waveguide receives light from the light source so that the light is caused to propagate in counter-propagating optical signals in the waveguide. The waveguide includes the counter-propagating optical signals or some characteristic of the signals modified or effected by an external parameter caused by or indicative of the event to provide modified counter-propagating optical signals. The detector means detects the modified counter-propagating optical signals effected by the parameter and determines the time delay or difference between the modified counter-propagating optical signals in order to determine the location of the event.
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Inventors:
Taylors, Edward Yee.
Goode, Jason Earl.
Katzi Foris, Jim
Goode, Jason Earl.
Katzi Foris, Jim
Application Number:
JP2000589935A
Publication Date:
February 08, 2012
Filing Date:
November 19, 1999
Export Citation:
Assignee:
FUTURE FIBRE TECHNOLOGIES PTY LTD
International Classes:
G01B11/00; G01M11/00; G01M5/00; G01M99/00; G01N21/63
Domestic Patent References:
| JPH06307895A | 1994-11-04 | |||
| JPH0658712A | 1994-03-04 | |||
| JPH0719949A | 1995-01-20 |
Foreign References:
| GB2204204A | 1988-11-02 |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda