Title:
OPTICAL TRANSMISSION CHARACTERISTIC INFERENCE DEVICE, OPTICAL TRANSMISSION CHARACTERISTIC INFERENCE METHOD AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/139749
Kind Code:
A1
Abstract:
This optical transmission characteristic inference device infers a transmission characteristic of an optical transmission path by: using a non-linear Schrodinger equation to model the optical effect of an optical transmission path; dividing the optical transmission path into N segments (where N is an integer greater than 1); and solving the non-linear Schrodinger equation by N step computations using, as the step size, each of the segment lengths of the N segments resulting from the division. The optical transmission characteristic inference device is provided with a step size updating unit that updates each of the N step sizes on the basis of an inferred optical power distribution and an inferred dispersion distribution indicated by the transmission characteristic.
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Inventors:
SASAI TAKEO (JP)
YAMAZAKI ETSUSHI (JP)
NAKAMURA MASANORI (JP)
YAMAZAKI ETSUSHI (JP)
NAKAMURA MASANORI (JP)
Application Number:
PCT/JP2022/002185
Publication Date:
July 27, 2023
Filing Date:
January 21, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B10/077; H04B17/30
Other References:
SASAI TAKEO; NAKAMURA MASANORI; YAMAZAKI ETSUSHI; YAMAMOTO SHUTO; NISHIZAWA HIDEKI; KISAKA YOSHIAKI: "Digital Longitudinal Monitoring of Optical Fiber Communication Link", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 40, no. 8, 29 December 2021 (2021-12-29), USA, pages 2390 - 2408, XP011905076, ISSN: 0733-8724, DOI: 10.1109/JLT.2021.3139167
DIETRICH MARCUSE, C. R. MENYUK, A. WAI: "Application of the Manakov-PMD Equation to Studies of Signal Propagation in Optical Fibers with Randomly Varying Birefringence", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 15, no. 9, 1 September 1997 (1997-09-01), USA, pages 1 - 12, XP011028933, ISSN: 0733-8724
"Multispan optical transmission line monitoring technology by learning nonlinear Schrödinger equation", BUSINESS COMMUNICATION, vol. 58, no. 6, 1 June 2021 (2021-06-01), JP , pages 22 - 25, XP009547808, ISSN: 0385-695X
SASAI, TAKEO, MASANORI NAKAMURA, HIDETO YAMAMOTO, HIDEKI NISHIZAWA: "Digital Backpropagation for Optical Path Monitoring -Loss and Dispersion Profile Estimation-", IEICE TECHNICAL REPORT, vol. 120, no. (OCS2020-39), 7 January 2021 (2021-01-07), JP , pages 61 - 64, XP009547888, ISSN: 1349-144X
DIETRICH MARCUSE, C. R. MENYUK, A. WAI: "Application of the Manakov-PMD Equation to Studies of Signal Propagation in Optical Fibers with Randomly Varying Birefringence", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 15, no. 9, 1 September 1997 (1997-09-01), USA, pages 1 - 12, XP011028933, ISSN: 0733-8724
"Multispan optical transmission line monitoring technology by learning nonlinear Schrödinger equation", BUSINESS COMMUNICATION, vol. 58, no. 6, 1 June 2021 (2021-06-01), JP , pages 22 - 25, XP009547808, ISSN: 0385-695X
SASAI, TAKEO, MASANORI NAKAMURA, HIDETO YAMAMOTO, HIDEKI NISHIZAWA: "Digital Backpropagation for Optical Path Monitoring -Loss and Dispersion Profile Estimation-", IEICE TECHNICAL REPORT, vol. 120, no. (OCS2020-39), 7 January 2021 (2021-01-07), JP , pages 61 - 64, XP009547888, ISSN: 1349-144X
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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