Title:
OPTICAL FIBER CHARACTERISTIC MEASUREMENT DEVICE, OPTICAL FIBER CHARACTERISTIC MEASUREMENT PROGRAM, AND OPTICAL FIBER CHARACTERISTIC MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2022/009727
Kind Code:
A1
Abstract:
An optical fiber characteristic measurement device (1) comprises: a light detection unit (16) that detects Brillouin scattered light (LS) obtained by injecting light into optical fiber under test (FUT); a signal processing unit (18b) that obtains, on the basis of a detection signal (S1) outputted from the light detection unit, a first Brillouin gain spectrum (B1), which is the spectrum of the Brillouin scattered light obtained when the spectral width of the light injected into the optical fiber under test is a first width, and a second Brillouin gain spectrum (B2), which is the spectrum of the Brillouin scattered light obtained when the spectral width of the light injected into the optical fiber under test is a second width wider than the first width; and a measurement unit (18c) that measures the characteristics of the optical fiber under test on the basis of the first Brillouin gain spectrum and the second Brillouin gain spectrum.
Inventors:
MATSUURA SATOSHI (JP)
TEZUKA SHIN-ICHIROU (JP)
HONMA MASAYOSHI (JP)
KUMAGAI YOSHIHIRO (JP)
TEZUKA SHIN-ICHIROU (JP)
HONMA MASAYOSHI (JP)
KUMAGAI YOSHIHIRO (JP)
Application Number:
PCT/JP2021/024484
Publication Date:
January 13, 2022
Filing Date:
June 29, 2021
Export Citation:
Assignee:
YOKOGAWA ELECTRIC CORP (JP)
International Classes:
G01D5/353; G01M11/00; G01M11/02
Domestic Patent References:
| WO2018083732A1 | 2018-05-11 |
Foreign References:
| JP2017049255A | 2017-03-09 | |||
| JP2013152182A | 2013-08-08 | |||
| JP2017015663A | 2017-01-19 | |||
| JP2017072389A | 2017-04-13 | |||
| CN101929880A | 2010-12-29 | |||
| JP2009139241A | 2009-06-25 |
Other References:
S. MANOTHAMM. KISHIZ. HEAND K. HOTATE: "Simulation and Experiment for Verifying Intensity Modulation Scheme in Brillouin Optical Correlation Domain Reflectometry", PROC. CLEO, 6 May 2012 (2012-05-06)
O. MATSUOKAM. KISHIK. HOTATE: "Brillouin Optical Correlation Domain Reflectometry with Double Frequency Modulation and Phase Modulation", PROC. SPIE, 2 June 2014 (2014-06-02), pages 9157
O. MATSUOKAM. KISHIK. HOTATE: "Brillouin Optical Correlation Domain Reflectometry with Double Frequency Modulation and Phase Modulation", PROC. SPIE, 2 June 2014 (2014-06-02), pages 9157
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
Download PDF: