Title:
後方散乱光増幅装置、光パルス試験装置、後方散乱光増幅方法、及び光パルス試験方法
Document Type and Number:
Japanese Patent JP7040390
Kind Code:
B2
Abstract:
The present invention is to provide a backscattered light amplification device, an optical pulse test apparatus, a backscattered light amplification method, and an optical pulse test method for amplifying a desired propagation mode of Rayleigh backscattered light with a desired gain by stimulated Raman scattering in a fiber under test having the plurality of propagation modes. The backscattered light amplification device according to the present invention is configured to control individually power, incident timing, and pulse width of a pump pulse for each propagation mode when the pump pulse is incident in a plurality of propagation modes after the probe pulse is input to the fiber under test in any propagation mode.
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Inventors:
Keiji Okamoto
Atsushi Nakamura
Hiroyuki Oshida
Atsushi Nakamura
Hiroyuki Oshida
Application Number:
JP2018187258A
Publication Date:
March 23, 2022
Filing Date:
October 02, 2018
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G02F1/35; G01M11/00; G01M11/02; H04B10/071
Domestic Patent References:
| JP2018063214A | ||||
| JP2005084041A | ||||
| JP2016080600A | ||||
| JP2018036167A |
Foreign References:
| WO2017217334A1 | ||||
| US20180136036 |
Other References:
DU, Jiangbing et al.,High-Order Few-Mode-Fiber Raman Amplifier for Low Noise Mode-Division-Multiplexed Optical Communication,2017 16th International Conference on Optical Communications and Networks,IEEE,2017年,pp. 1 -4
Attorney, Agent or Firm:
Kenji Okada
Katsuhiro Imashita
Katsuhiro Imashita