Hitachi Communication Technologies, Ltd.

Tomohiro Mori

Hideaki Tsushima

Yasuyuki Fukashiro

Yoshio Nogi

Disclosed is an optical cross connect apparatus that is applicable to an end office node and relay node in a path. The optical cross connect apparatus includes an optical switch for generating plural optical output signals from plural optical input signals; an optical level monitor section for detecting the optical levels of the optical input signals; and a control section that is connected to the optical switch and the optical level monitor section, includes a path switching management section for retaining a path switching management table, references the path switching management table when the optical input signals detected by the optical level monitor section are found to be OFF, and judges whether the optical switch should be operated.

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Yokohama, Japan

Tomohiro Mori