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  1. ’†ì´ŽiC‘Š“cˆê•vCÂŠCŒb”VC
    u’·”g’·‘уOƒŒ[ƒfƒbƒhŒ`ŒõƒP[ƒuƒ‹“`‘—Œn‚ÌŽÀŒ±“IŒŸ“¢v
    “dŽq’ʐMŠw‰ï˜_•¶ŽCVol. 62-B, No. 8, pp. 736-743 (1979.8)..

  2. Kiyoshi Nakagawa, Yoshiro Hakamada, Koh-ichi Suto, and Takeshi Ito,
    g400 Mb/s Optical Repeater Design and Performance,h
    The Transactions of the IECE of Japan,
    Vol. E 65, No. 11, pp.657-664 (Nov. 1982).

  3. Kiyoshi Nakagawa, Shigendo Nishi, Kazuo Aida, and Etsugo Yoneda,
    gTrunk and Distribution Network Application of Erbium-Doped Fiber
    Amplifier,h IEEE Journal of Lightwave Technology, Vol.9, No.2,
    pp.198-208 (Feb. 1991).





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