Title:
ネットワークシステム
Document Type and Number:
Japanese Patent JP7360024
Kind Code:
B2
Abstract:
A network system includes a plurality of transmission devices, each of which being provided with a wavelength selective switch including a wavelength filter, configured to transmit an optical signal for each channel; and a management device configured to manage the plurality of transmission devices. The wavelength selective switch configured to enable band setting that widens a transmission band of an optical signal of a predetermined channel to the wavelength filter of an adjacent channel. The management device is further configured to calculate an OSNR of the optical signal based on power loss, calculate a bandwidth of the optical signal according to narrowing due to the wavelength filter, determine whether or not the OSNR and the bandwidth respectively satisfies a condition of transmission quality of the optical signal, and decide whether or not to cause the wavelength selective switch to perform the band setting based on a result of the determination.
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Inventors:
▲続▼木 達也
Shinji Komiya
Tomoaki Takeyama
Shinji Komiya
Tomoaki Takeyama
Application Number:
JP2019158377A
Publication Date:
October 12, 2023
Filing Date:
August 30, 2019
Export Citation:
Assignee:
富士通株式会社
International Classes:
H04J14/02; G02B6/35; H04B10/079
Domestic Patent References:
| JP2013106187A | ||||
| JP2013168746A | ||||
| JP2014014017A |
Other References:
TAKESHITA, H. et al.,Enhancing Protection Performance by Effectively Using Spectral Slots of Impairment-Aware Elastic Optical Networks,Journal of Optical Communications and Networking,米国,OSA,2018年01月,VOL. 10, NO. 1,pages A91-A101
Attorney, Agent or Firm:
Shuhei Katayama