May 2019 Vol. 17 No. 552019

https://www.ntt-review.jp/archive/2019/201905.html

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Katsuhiko Kawazoe, Senior Vice President, Head of
Research and Development Planning, NTT

Feature Articles
Ultrahigh-speed Transmission Technology
to Support High-capacity Communications
Infrastructure of the Future
Ultrahigh-speed Transmission Technology for FutureHigh-capacity Transport Networks
Ultrahigh-speed Optical Communications Technology
Combining Digital Signal Processing and Circuit
Technology
Low-noise Amplification and Nonlinearity Mitigation
Based on Parametric Repeater Technology
Ultrahigh-speed Optical Front-end Device Technology for
Beyond-100-GBaud Optical Transmission Systems
Toward Terabit-class Wireless Transmission: OAM
Multiplexing Technology

Regular Articles
Recent Progress in Applications of Optical Multimode Devices Using Planar Lightwave Circuits

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Katsuhiko Kawazoe, Senior Vice President, Head of
Research and Development Planning, NTT▼Overview

The NTT laboratories heretofore have focused on research supporting NTT’s own
services and systems. However, their strategy has been shifted to the promotion ofthe B2B2X (business-to-business-to-X) model and now emphasizes value creation
with partner companies. What is the mindset at the NTT laboratories to advanceresearch and development (R&D) with the aim of creating innovation for people to live
their lives more affluently and in a more natural manner? Katsuhiko Kawazoe, SeniorVice President and the head of Research and Development Planning, NTT, wasasked about his attitude toward R&D that will transform the world.

Feature Articles
Ultrahigh-speed Transmission Technology to Support High-capacity
Communications Infrastructure of the Future

Ultrahigh-speed Transmission Technology for FutureHigh-capacity Transport Networks▼Abstract

Ultrahigh-speed transmission technologies in radio and opticalfiber transport systems are essential to accommodate theever-increasing demand for bandwidth in future network
infrastructure. Advanced digital modulation/demodulation
techniques as well as ultrahigh-speed front-end integration
technologies are optimized to fully exploit the characteristics ofdifferent types of transmission media such as air and opticalfiber, considering novel degrees of freedom such as space
division multiplexing. This article introduces state of the art
research and development that achieves ultrahigh-speed
communications at speeds of over 1 Tbit/s per carrier (over ahundred times the current speed) in both optical fibertransmission and radio transmission.

Global Standardization Activities

Regular Articles

Standardization Efforts of International Electrotechnical Commission Related to Surge Protection
Components, and Receipt of METI Minister’s Award

Recent Progress in Applications of Optical MultimodeDevices Using Planar Lightwave Circuits

Short Reports
NTT Develops Non-rigid Object Recognition Technology that Achieves Recognition of Database
Images—Not Only Rigid 3D Objects but also Non-rigid Objects—at Low Cost

▼Abstract

The optical propagation mode—the electromagnetic field
distribution of light propagating through a waveguide—isattracting attention as a new degree of freedom of light and isexpected to provide new functions and improved opticalcharacteristics in optical devices and systems. In this article,
we introduce optical device technologies that utilize the opticalpropagation mode in an integrated optical waveguidecomponent called a planar lightwave circuit.