Patent Number: 7,787,777

Title: Optical packet network system

Abstract: An optical packet network system of a ring type, capable of preventing degradation of an optical signal, can be implemented by providing a mechanism relatively simple in structure, capable of erasing light noise if the optical packet signal does not exists. In the optical packet network system made up by interconnecting respective nodes adjacent to each other, and connecting a sending source of an optical packet signal to a ring, a light noise removal function block is provided between the respective nodes adjacent to each other.

Inventors: Iio; Shinji (Musashino, JP), Suehiro; Masayuki (Musashino, JP), Ikezawa; Katsuya (Musashino, JP), Miura; Akira (Musashino, JP), Oka; Sadaharu (Musashino, JP), Sato; Chie (Musashino, JP), Hihara; Mamoru (Musashino, JP), Yakihara; Tsuyoshi (Musashino, JP), Nakajima; Shin-ichi (Musashino, JP), Wada; Morio (Musashino, JP), Hayashi; Daisuke (Musashino, JP), Kobayashi; Shinji (Musashino, JP), Asano; Yoshiyuki (Musashino, JP)

Assignee: Yokogawa Electric Corporation

International Classification: H04B 10/00 (20060101); H04B 10/20 (20060101)

Expiration Date: 8/31/12018