April 2018 Vol. 16 No. 4

Feature Articles: Keynote Speeches at NTT R&D Forum 2018

• Hiroo Unoura, President and Chief Executive Officer, NTT

  

  Overview
  In this article, we introduce NTT Group’s initiatives for B2B2X (business-to-business-to-X) models and acceleration of Society 5.0 through co-creation of new value. The contents of this article are based on a lecture given by Hiroo Unoura, NTT President and Chief Executive Officer, at NTT R&D Forum 2018 held in February 2018.

• Hiromichi Shinohara, Senior Executive Vice President and Head of Research and Development Planning Department, NTT

  

  Overview
  This article introduces NTT’s latest research and development activities based on a lecture presented by Hiromichi Shinohara, NTT Senior Executive Vice President and Head of the Research and Development Planning Department, at NTT R&D Forum 2018, which took place in February 2018.

Feature Articles: NTT Tsukuba Forum 2017 Workshop Lectures

• Internet of Things Approach for Creating Value in Various Fields

  

  Abstract
  The Internet of Things (IoT) is expected to create high value services in various fields. We believe that the era in which IoT is fully utilized will have requirements different from those of the past for information and telecommunications networks. In this article, the influence of the new IoT era on networks and information processing is described, along with the resulting requirements. The NTT laboratories’ efforts and assumed usage scenarios are also introduced. These Feature Articles are based on lectures given during workshops at the Tsukuba Forum 2017 held in October 2017.

• Wireless Access Technologies to Provide Various Services in Future Networks

  

  Abstract
  NTT Access Network Service Systems Laboratories is researching and developing wireless access technologies in two of its laboratory projects. This article introduces the wireless technologies being developed that will contribute to providing advanced mobile services of the 202X generation. These include future network services in the NTT Group as well as telephone services for extremely rural areas and essential services for disaster recovery.

• Research and Development of Optical Fiber and Cable Technology

  

  Abstract
  NTT Access Network Service Systems Laboratories has initiated the Access Media Project to further the research and development (R&D) of optical fiber and cable technologies for broadband network services. This article introduces the latest R&D in operations, administration, and management technologies that will be used to make the operation of a massive number of optical facilities more efficient. It also reviews next-generation optical fiber technologies to handle the explosive future growth of data traffic.

Regular Articles

• Demonstration of Single-mode Multicore Fiber Transport Network with Crosstalk-aware Optical Path Configuration

  

  Abstract
  Space-division multiplexing using multicore fiber (MCF) is considered to be one of the most promising technologies for breaking the capacity limit of traditional single-mode fibers and advancing fiber optic communication systems. For transport networks to utilize the capacity of MCF efficiently, it is essential to consider inter-core crosstalk (XT) in provisioning optical paths. We developed an MCF transport network testbed and used it to demonstrate our optical path configuration scheme, in which a software-defined networking controller configures programmable transponders that include a beyond-100G digital signal processor that factors in XT.

• High-speed Modulator for Next-generation Large-capacity Coherent Optical Networks

  

  Abstract
  Modulators with very high speeds are necessary to achieve the next-generation of 1-T/λ coherent optical networks. In this article, we describe our recently developed InP (indium phosphide)-based in-phase and quadrature (IQ) modulators with ultrahigh bandwidth and low half-wavelength voltage (V_π). We utilize a structure with extremely low electrical loss and obtain a 3-dB electro-optic bandwidth of over 67 GHz without degrading other characteristics such as driving voltage and optical loss. The IQ modulator performs IQ modulation at up to 120 Gbaud without optical and electrical pre-equalization. Furthermore, we developed an ultralow power modulator driver employing 65-nm CMOS (complementary metal-oxide semiconductor) technology and fabricated an IQ modulator co-assembled with this driver IC (integrated circuit), and successfully demonstrated 64-Gbaud/16QAM (quadrature amplitude modulation) operation.

Global Standardization Activities

• Standardization Trends of oneM2M for Horizontal Internet of Things Platform

  

  Abstract
  The oneM2M partnership project was founded to promote the standardization of a horizontal Internet of Things (IoT) platform. The aim is to establish specifications for a functional group that can be used in common by many IoT systems as a platform, while also formulating specifications for interworking with other existing standards. This article introduces the overall organization and specifications of oneM2M and reports some recent trends.

Practical Field Information about Telecommunication Technologies

• Examples of RT-BOX Deterioration and New Inspection Method

  

  Abstract
  Maintaining outdoor equipment is necessary in order to provide communication services without interruption. This article describes the deterioration that can occur in certain outdoor facilities and how we are working to improve the inspection and maintenance process. This is the forty-fifth article in a series on telecommunication technologies. This contribution is from the Materials Engineering Group, Technical Assistance and Support Center, Maintenance and Service Operations Department, Network Business Headquarters, NTT EAST.

Information

• Event Report: Tsukuba Forum 2017

  

  Abstract
  Tsukuba Forum 2017 was held on October 19 and 20. The theme of the forum was Creating Access Network Together with Essential Partners ~Advanced IoT/5G Technology and Safe Construction and Operation of Facilities. This article gives a brief overview of the speeches and exhibits presented at the forum.

External Awards/Papers Published in Technical Journals and Conference Proceedings

• External Awards/Papers Published in Technical Journals and Conference Proceedings