Share Email Print
cover

Proceedings Paper • Open Access

Feasibility study of a scalable laser communication terminal in NICT for next-generation space networks

Paper Abstract

Recently, satellite broadband communication services using Ka-band are emerging all over the world, some requiring capacities in excess of 100 Gbps. With the radio bandwidth resources becoming exhausted, high-speed optical communications can be used instead to achieve ultra-broadband communications. The National Institute of Information and Communications Technology (NICT) in Japan has over 20 years of experience in R&D of space laser communications with missions such as the Engineering Test Satellite VI (ETS-VI), OICETS, and SOCRATES/SOTA. We are currently developing a laser communication terminal named “HICALI”, aiming to achieve 10 Gbps-class space communications with a 1.5 μm-band laser beam between optical ground stations (OGSs) and the next generation high throughout satellite called ETS-IX with a hybrid communication system using radio and optical frequencies, which will be launched into the geostationary orbit in 2021. Moreover, we have studied laser communication terminals for terrestrial networks, as an alternative wireless system to radio frequency (RF) band. In 2014, we developed a terrestrial free-space optical communications network facility, named INNOVA (IN-orbit and Networked Optical ground stations experimental Verification Advanced testbed). Many demonstrations have been conducted to verify the feasibility of sophisticated optical communications equipment in orbit.

We have conducted a feasibility study of a laser communication terminal for next-generation space networks following the above R&D trends in space communication networks, which is a high-speed, secure, small, and scalable laser communication terminal for optical ground stations (OGSs) and satellites or airborne terminals. In this paper, we describe the plan of NICT to develop a scalable laser communication terminal for next-generation space networks.

Paper Details

Date Published: 12 July 2019
PDF: 8 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 111805W (12 July 2019); doi: 10.1117/12.2536131
Show Author Affiliations
Yasushi Munemasa, National Institute of Information and Communications Technology (Japan)
Yoshihiko Saito, National Institute of Information and Communications Technology (Japan)
Alberto Carrasco-Casado, National Institute of Information and Communications Technology (Japan)
Phuc V. Trinh, National Institute of Information and Communications Technology (Japan)
Hideki Takenaka, National Institute of Information and Communications Technology (Japan)
Toshihiro Kubo-oka, National Institute of Information and Communications Technology (Japan)
Koichi Shiratama, National Institute of Information and Communications Technology (Japan)
Morio Toyoshima, National Institute of Information and Communications Technology (Japan)


Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

© SPIE. Terms of Use
Back to Top
PREMIUM CONTENT
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?
close_icon_gray