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Proceedings Paper

Experimental demonstration of next-generation FSO communication system
Author(s): Kamugisha Kazaura; Kazunori Omae; Toshiji Suzuki; Mitsuji Matsumoto; Edward Mutafungwa; Koichi Asatani; Tadaaki Murakami; Koichi Takahashi; Hideki Matsumoto; Kazuhiko Wakamori; Yoshinori Arimoto
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Paper Abstract

Free-space optical communication has emerged as a competitive and viable technology for offering high data rates, improved capacity, cost-effective and an easy to deploy solution for providing connectivity between two points which are up to a few kilometers apart. In this paper we present experimental work which demonstrates the practicality of next generation free-space optical (FSO) communication systems suitable for short-haul, high-speed and robust data links. This experimental system is placed between two buildings in the Waseda University campus area for a communication link spanning a distance of 1 km. We outline the design of the optical antenna which uses 1550 nm wavelength and directly coupling a freespace optical beam to a single-mode fiber without the need for OE/EO conversion, to offer a communication link with data rates from 2.5 Gbps to 10 Gbps. The antenna is capable of overcoming most common limitations inherent in FSO communication systems, such as atmospheric induced beam wander and scintillation effects. A high-speed tracking mechanism which utilizes a fine positioning mirror (FPM) capable of tracking and controlling the received beam and focusing/steering most of beam power into the fiber is presented. This FPM is capable of suppressing the frequent power fluctuations caused by beam angle-of-arrival (AOA) variations. This paper presents experimental results of the FSO communication system capable offering stable performance in terms of measured bit-error-rate (BER). Performance results showing increasing the systems data rate from 2.5 Gbps to 10 Gpbs are also presented.

Paper Details

Date Published: 2 October 2006
PDF: 12 pages
Proc. SPIE 6390, Broadband Access Communication Technologies, 63900G (2 October 2006); doi: 10.1117/12.685884
Show Author Affiliations
Kamugisha Kazaura, GITS (Japan)
Kazunori Omae, GITS (Japan)
Toshiji Suzuki, GITS (Japan)
Mitsuji Matsumoto, GITS (Japan)
Edward Mutafungwa, Helsinki Univ. of Technology (Finland)
Koichi Asatani, Advanced Info-Communication Promotion Community (Japan)
Tadaaki Murakami, Advanced Info-Communication Promotion Community (Japan)
Koichi Takahashi, Advanced Info-Communication Promotion Community (Japan)
Hideki Matsumoto, Advanced Info-Communication Promotion Community (Japan)
Kazuhiko Wakamori, Advanced Info-Communication Promotion Community (Japan)
Yoshinori Arimoto, National Institute of Information and Communications Technology (Japan)

Published in SPIE Proceedings Vol. 6390:
Broadband Access Communication Technologies
Raj Jain; Benjamin B. Dingel; Shozo Komaki; Shlomo Ovadia, Editor(s)

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