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Title:
OPTICAL TRANSMISSION SYSTEM, WAVELENGTH DISPERSION COMPENSATION METHOD, FIRST OPTICAL COMMUNICATION DEVICE, AND SECOND OPTICAL COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/123724
Kind Code:
A1
Abstract:
In the present invention: a wavelength dispersion amount calculation signal generation unit of a first optical communication device generates a wavelength dispersion amount calculation signal of a transmission rate for establishing synchronization with a second optical communication device without performing wavelength dispersion compensation in an optical transmission line; an optical signal generation unit of the first optical communication device generates a plurality of optical signals having different center wavelengths from the wavelength dispersion amount calculation signal generated by the wavelength dispersion amount calculation signal generation unit, and transmits the optical signals through the optical transmission line; an optical signal reception unit of the second optical communication device receives the optical signals transmitted through the optical transmission line, and demodulates the received optical signals to electrical signals; and a wavelength dispersion amount calculation unit of the second optical communication device calculates a wavelength dispersion amount of the optical transmission line, on the basis of delay time between wavelength dispersion amount calculation signals included in the electrical signals resulting from demodulation by the optical signal reception unit.

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Inventors:
MINOGUCHI KYO (JP)
YOSHIDA TOMOAKI (JP)
Application Number:
PCT/JP2020/046039
Publication Date:
June 16, 2022
Filing Date:
December 10, 2020
Export Citation:
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Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B10/2513
Domestic Patent References:
WO2018016055A12018-01-25
Foreign References:
JP2017005551A2017-01-05
JP2017017427A2017-01-19
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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