Title:
An abnormal-conditions signal detection apparatus and an abnormal-conditions signal detection method
Document Type and Number:
Japanese Patent JP5994186
Kind Code:
B2
Abstract:
When ld0 denotes an initial optical path length that is a length of an optical path, along which the signal light travels, as converted using a refractive index in vacuum, lm0 denotes an initial optical path length that is a length of an optical path, along which the reference light travels, as converted using a refractive index in vacuum, Deltal denotes a fluctuation width of a difference in optical path lengths between the signal light and the reference light as converted using a refractive index in vacuum, lambda0 denotes a central oscillation wavelength of the wavelength-variable laser, and Deltalambda denotes an oscillation wavelength variable range of the wavelength-variable laser, then an initial optical path difference |ld0-lm0| satisfies |ld0-lm0|>(Deltal/Deltalambda)lambda0.
Inventors:
Kiyotaka Ito
Yasumori Hino
Yasumori Hino
Application Number:
JP2013502731A
Publication Date:
September 21, 2016
Filing Date:
June 11, 2012
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
G11B7/005; G11B7/135; G11B7/0065; G11B7/1263; G11B7/1267
Domestic Patent References:
| JP61126403A | ||||
| JP2009252337A |
Foreign References:
| WO2010047100A1 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Shinsuke Otsuki
Masataka Otani
Shinsuke Otsuki
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