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M Nakayama
Dept.Appl.Phys.Osaka City Univ.
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I Tanaka
Dept.Appl.Phys.Osaka City Univ.
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T Doguchi
Dept.Appl.Phys.Osaka City Univ.
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H Nishimura
Dept.Appl.Phys.Osaka City Univ.
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K Kawashima
ATR Optical & Radio Commun.Lab.
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K Fujiwara
ATR Optical & Radio Commun.Lab.