Basic technologies toward the all-photonics network

Optical technology is important for achieving the All-Photonics Network, a key element of NTT's Innovative Optical and Wireless Network (IOWN). This article introduces basic research on optical technologies, including large-capacity optical transmission system/device technology, photonics-electronics convergence technology, the LASOLVTM coherent Ising machine, and optical lattice clock network. It is based on a special session presented by Tetsuomi Sogawa, senior vice president and head of NTT Science and Core Technology Laboratory Group, at NTT R&D Forum 2019 held on November 14 and 15, 2019. © 2020 Nippon Telegraph and Telephone Corp.. All rights reserved.