About NAKAMURA MITSUTAKA
About 東大 先端科学技研セ
About TANEMURA TAKUO
About 東大 先端科学技研セ
About KIKUCHI KAZURO
About 東大 先端科学技研セ
About 電子情報通信学会大会講演論文集
About light amplifier
About DRA【光増幅器】
About Optical communication systems and equipment
About Optical waveguide,optical fibers,and fiber optics
About Other optical transmission devices
About 分布
About 光増幅器
About エルビウム
About 雑音