クボタ　ヒロカズ   Hirokazu Kubota   久保田　寛和    所属   追手門学院大学  理工学部 電気電子工学科    職種   教授
言語種別	英語
発行・発表の年月	1993/05
形態種別	論文
標題	Long-distance dynamic soliton transmission technology
執筆形態	共著・編著（代表編著を除く）
掲載誌名	NTT R and D
巻・号・頁	42(5),pp.661-668
著者・共著者	Masataka Nakazawa,Eiichi Yamada,Hirokazu Kubota,Kazunori Suzuki
概要	We have developed an erbium-doped fiber amplifier (EDFA) for amplifying optical solitons and the dynamic soliton transmission method for achieving long-distance optical soliton communication. An optical soliton propagates stably over long distances without distortion by balancing the group velocity dispersion (GVD) of a fiber with its nonlinearity, known as self phase modulation (SPM). This is attractive because it makes it possible to construct a dispersion-free high-speed communication system. In the dynamic soliton transmission method, the amplitude of the soliton varies rapidly, but the soliton pulse width is kept constant after propagation by injecting a soliton into the fiber that is slightly more intense than the fundamental N = 1 soliton. The decrease in amplitude is compensated for by the EDFA. This report describes the fundamentals of dynamic soliton transmission and presents 10 Gbit/s-1200 km and 20 Gbit/s-1020 km long-distance optical soliton transmission experiments.
ISSN	0915-2326