About MATSUDA TOSHIYA
About NTT ネットワークサービスシステム研
About MATSUOKA SHINJI
About NTT ネットワークサービスシステム研
About NTT技術ジャーナル
About WDM
About trunk(communication network)
About development
About modulator-demodulator
About mode dispersion
About optical communication
About QPSK
About DWDM
About system development
About PMD
About DQPSK
About Optical communication systems and equipment
About 伝送路
About DWDM
About 開発