Title:
CHARACTERISTIC MEASUREMENT DEVICE, CHARACTERISTIC MEASUREMENT METHOD, AND COMPUTER PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/135698
Kind Code:
A1
Abstract:
This characteristic measurement device is for measuring characteristics between lanes of a transmitter and a receiver that are connected to each other via an optical fiber transmission line. The characteristic measurement device comprises: an adaptive equalization unit for, by using as input signals a polarization-multiplexed reception signal and a phase conjugation signal of the polarization-multiplexed reception signal or a plurality of signals mathematically equivalent to the reception signal and the phase conjugation signal, performing equalization processing on the input signals; and a characteristic function derivation unit for calculating, on the basis of a frequency offset and a filter coefficient obtained during the equalization processing performed by the adaptive equalization unit, first reverse characteristics indicating reverse characteristics of the transmitter and second reverse characteristics indicating reverse characteristics of the receiver.
Inventors:
KAWAI AKIRA (JP)
NAKAMURA MASANORI (JP)
KOBAYASHI TAKAYUKI (JP)
MIYAMOTO YUTAKA (JP)
NAKAMURA MASANORI (JP)
KOBAYASHI TAKAYUKI (JP)
MIYAMOTO YUTAKA (JP)
Application Number:
PCT/JP2022/000858
Publication Date:
July 20, 2023
Filing Date:
January 13, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B10/61; H04B10/07
Foreign References:
| US11088766B1 | ||||
| JP2019186912A | 2019-10-24 | |||
| JP2020141294A | 2020-09-03 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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