March 2023 Vol. 21 No. 332023

https://www.ntt-review.jp/archive/2023/202303.html

View from the Top
Masaaki Moribayashi, Representative Member of theBoard, President and CEO, NTT WEST

View from the Top

Masaaki Moribayashi, Representative Member of the Board,
President and CEO, NTT WEST

▼Abstract

NTT WEST is striving to solve social issues in the region where it operates by
supporting the digital transformation of regional industries and communities. The
company is also taking on challenges in new areas and creating innovations byusing cutting-edge information and communication technologies toward building asustainable society of well-being. We asked Masaaki Moribayashi, CEO of NTT
WEST, about his vision and attitude as top management.

Front-line Researchers
Tatsuaki Okamoto, NTT Fellow, NTT Social Informatics
Laboratories

Rising Researchers
Atsushi Nakamura, Distinguished Researcher, NTT
Access Network Service Systems Laboratories

Feature Articles
Keynote Speeches at NTT R&D Forum—Road to IOWN 2022
Akira Shimada, President and Chief Executive Officer, NTT Corporation
Atsuko Oka, Executive Vice President, Head of Research and Development Planning
Department, NTT Corporation

Feature Articles
Keynote Speeches at NTT R&D Forum—Road to IOWN 2022

Akira Shimada, President and Chief Executive Officer, NTTCorporation▼Abstract

This article introduces theInnovative Optical and Wireless
Network (IOWN) service that is due
to launch in March 2023. It is basedon the keynote speech given by
Akira Shimada, president and chief
executive officer of NTT
Corporation, at the “NTT R&D
Forum—Road to IOWN 2022” heldfrom November 16th to 18th, 2022.

IOWN1.0
FY2022
APN
services

Photonicselectronics
convergencedevices

FY2023–Ultra-low-latency services

Compact/low-powerdevices for networks

Servers(SWB)IOWN2.0

IOWN3.0(Optical inter-board connection)(Optical inter-chip connection)

IOWN4.0(Optical intra-chip connection)

FY2025–Ultra-low-latency, highcapacity, low-powerconsumption services

FY2029–After FY2030–

Ultra-low-latency, ultra-highcapacity, ultra-low-powerconsumption services

Further low-powerconsumption
services

Inter-board connection devices

Inter-chip connection devices

Optical Intrachip connection

Ultra-low-powerconsumption servers

Further low-powerconsumption
servers

Low-powerconsumption servers

Regular Articles

Regular Articles
Over 100-Tbit/s Ultra-wideband Wavelength Division Multiplexed Transmission Technologies forFuture Optical Transport Network Systems

Over 100-Tbit/s Ultra-wideband Wavelength Division
Multiplexed Transmission Technologies for Future Optical
Transport Network Systems▼Abstract

Report of the ITU Plenipotentiary Conference 2022 (PP-22)

Information
Report on NTT R&D Forum—Road to IOWN 2022

This article reviews trends in ultra-wideband
wavelength-division multiplexing (WDM)
transmission techniques for expanding thecapacity of optical transmission systems. It
also presents NTT’s recent research anddevelopment results on ultra-wideband
WDM transmission for over 100-Tbit/s
transmission capacities in a triple-band (S,C, and L bands) WDM configuration.

120

F. Hamaoka et al.
(OECC/PSC2022)

100
Capacity (Tbit/s)

Global Standardization Activities

80

40
20

D. L. Gac et al.
(ECOC 2021)

T. Kato et al.
(ECOC 2019)60

H. Zhang et al.
(ECOC 2019)
K. Yonenaga et al.
B. Zhu et al.
(OECC 2016)(ECOC 2019)
2015

2017

>100 Tbit/s

X. Zhao et al.
(ECOC 2022)

B. Zhu et al.
P. Kumar et al.
(ECOC 2021/OFC 2022)(OFC 2020)
T. Kato et al.
(ECOC 2022)

2019

2021
Year

2023

2025