Invention Grant
- Patent Title: OSNR spectrum estimation apparatus, OSNR spectrum estimation method, and program
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Application No.: US17270713Application Date: 2019-08-14
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Publication No.: US11424824B2Publication Date: 2022-08-23
- Inventor: Hiroki Kawahara , Kohei Saito , Takeshi Seki , Tsutomu Kubo
- Applicant: Nippon Telegraph and Telephone Corporation
- Applicant Address: JP Tokyo
- Assignee: Nippon Telegraph and Telephone Corporation
- Current Assignee: Nippon Telegraph and Telephone Corporation
- Current Assignee Address: JP Tokyo
- Agency: Fish & Richardson P.C.
- Priority: JPJP2018-157606 20180824
- International Application: PCT/JP2019/031898 WO 20190814
- International Announcement: WO2020/040011 WO 20200227
- Main IPC: H04B10/07
- IPC: H04B10/07 ; H04B10/079 ; H04B10/516 ; H04J14/02
Abstract:
An OSNR spectrum estimation apparatus includes an OSNR estimation unit configured to cause an optical node to estimate an OSNR of a predetermined transmission line using a probe light of a predetermined wavelength in a predetermined number of wavelength channels, the predetermined number being less than the number of all wavelength channels; and an OSNR spectrum calculation unit configured to calculate an OSNR spectrum of all the wavelength channels from OSNRs of the predetermined number of wavelength channels measured by the optical node.
Public/Granted literature
- US20210351842A1 OSNR SPECTRUM ESTIMATION APPARATUS, OSNR SPECTRUM ESTIMATION METHOD, AND PROGRAM Public/Granted day:2021-11-11
Information query
