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Title:
OPTICAL TRANSMISSION DEVICE, OPTICAL RECEPTION DEVICE, OPTICAL COMMUNICATION SYSTEM, OPTICAL TRANSMISSION METHOD, SETTING METHOD, AND COMPUTER-READABLE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2019/208413
Kind Code:
A1
Abstract:
In order to suppress narrowing of the bandwidth of an optical signal which occurs when multiplexing/demultiplexing devices are disposed in multiple stages, the optical transmission device is provided with: first multiplexing devices each for outputting a first wavelength-multiplexed signal by multiplexing post-first-processing signals obtained by applying first filtering processing to transmitted optical signals input thereto; and a second multiplexing device for outputting a second wavelength-multiplexed signal by multiplexing the first wavelength-multiplexed signals after second filtering processing is applied thereto. The upper limit and the lower limit of a first transmission band, that is, a transmission band pertaining to the first filtering processing, are respectively different from the upper limit and the lower limit of a second transmission band, that is, a transmission band pertaining to the second filtering processing.

Inventors:
NAKAMURA Kohei (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
Application Number:
JP2019/016753
Publication Date:
October 31, 2019
Filing Date:
April 19, 2019
Export Citation:
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Assignee:
NEC CORPORATION (7-1 Shiba 5-chome, Minato-ku Tokyo, 01, 〒1088001, JP)
International Classes:
H04J14/02; G02B5/20; G02B5/28; H04B10/572; H04B10/67
Domestic Patent References:
WO2017109830A12017-06-29
Foreign References:
JP2004297228A2004-10-21
Attorney, Agent or Firm:
SHIMOSAKA Naoki (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
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