Title:
OPTICAL FIBER POWER FEEDING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/019997
Kind Code:
A1
Abstract:
In order to improve optical power feeding efficiency, this optical fiber power feeding system is provided with: a power feeding device 110 including a semiconductor laser 111 that performs laser oscillation by electric power and outputs power feeding light 112; a power receiving device 310 including a photoelectric conversion element 311 that converts the power feeding light into electric power; an extension unit 360 that extends the wavelength of the power feeding light; a first optical fiber cable 280A for transmitting the power feeding light from the power feeding device to the extension unit; and a second optical fiber cable 290A for transmitting the power feeding light from the extension unit to the power receiving device. On the basis of the loss – transmission distance characteristic of a laser wavelength λ1 before the extension by the extension unit and the loss – transmission distance characteristic of a laser wavelength λ3 after the extension by the extension unit, the first optical fiber cable is configured to have a length less than or equal to a transmission distance L2 at which a loss of the laser wavelength before the extension becomes equal to a loss of the laser wavelength after the extension.
Inventors:
KOBAYASHI TAKAHIRO (JP)
TAMATE SHUICHI (JP)
TAMATE SHUICHI (JP)
Application Number:
PCT/JP2020/025427
Publication Date:
February 04, 2021
Filing Date:
June 29, 2020
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
H04B10/25; H04B10/80
Domestic Patent References:
| WO2011158283A1 | 2011-12-22 |
Foreign References:
| JP2019029084A | 2019-02-21 | |||
| JP2000152523A | 2000-05-30 | |||
| JP2010135989A | 2010-06-17 |
Other References:
MIYAKAWA HIROSHI, TANAKA YOSUKE, KUROKAWA TAKASHI: "Design approaches to power-over-optical local-area-network systems", APPLIED OPTICS, OPTICAL SOCIETY OF AMERICA, WASHINGTON, DC, US, vol. 43, no. 6, 20 February 2004 (2004-02-20), US, pages 1379 - 5900, XP055789500, ISSN: 0003-6935, DOI: 10.1364/AO.43.001379
Attorney, Agent or Firm:
ARAFUNE, Hiroshi et al. (JP)
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