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Publication
Featured researches published by Kiyoshi Fukushima.
IEEE Electron Device Letters | 1990
I. Watanabe; T. Torikai; Kikuo Makita; Kiyoshi Fukushima; T. Uji
Impact ionization rates for electrons and holes in
electronic components and technology conference | 1996
Masataka Itoh; Junichi Sasaki; A. Uda; Isao Yoneda; Hiroshi Honmou; Kiyoshi Fukushima
Precise three-dimensional passive alignment of LD/PD arrays on Si optical benches has been achieved by means of AuSn solder bumps. A punch-and-die technique is used to fabricate the AuSn solder bumps to an extremely high accuracy (/spl plusmn/2 /spl mu/m) in bump height. A stripe-type bump bonding technique is employed to attain precise vertical alignment (/spl plusmn/1 /spl mu/m) of an LD array chip. Average LD-single-mode fiber array coupling loss was as low as -9.5/spl plusmn/0.5 dB, and while that of a PD-multimode fiber array was -0.4/spl plusmn/0.3 dB, almost as good as that with active alignment.
Archive | 1994
Kiyoshi Fukushima
Archive | 1992
Kiyoshi Fukushima
IEEE Electron Device Letters | 1990
Issei Watanabe; T. Torikai; Kikuo Makita; Kiyoshi Fukushima; T. Uji
Archive | 1989
Hajime Sakuma; Yukio Maehashi; Kiyoshi Fukushima; Takashi Miyazaki; Hisaharu Oba
Archive | 1999
Kiyoshi Fukushima
Electronics Letters | 1998
Takahiro Nakamura; K. Tsuruoka; A. Uda; Kiyoshi Fukushima; T. Torikai
Archive | 1997
Isao Yoneda; Kiyoshi Fukushima; Junichi Sasaki; Hiroshi Honmou; Masataka Itoh
Electronics and Communications in Japan Part Ii-electronics | 1992
T. Uji; Kiyoshi Fukushima; J. Hayashi; I. Watanabe; Takeshi Nagahori; Masataka Ito
