Other

Mitsubishi Denki Kabushiki Kaisha

Kdd Corporation

Yojiro Osaki

Naoki Kobayashi

Shu Yamamoto

Takashi Mizuochi

Tetsuya Miyazaki

Tadayoshi Kitayama

Hiroshi Ichibangase

Kiwami Matsushita

Aritomo Uemura

Takatomi Kabashima

The present invention has an object to obtain an optical signal quality supervisory device that supervises the quality of an optical signal simply, efficiently and with high accuracy without inviting an increase in cost, an increase in circuit scale and increase in power consumption. The bit rate of the optical supervisory channel is made lower than the bit rate of the optical main channel that is transmitted over an optical communication system, but the reception electric band width of a receiver that receives the optical supervisory channel is made equal to or wider than the reception electric band width of a receiver that receives the optical main channel. Also, the optical supervisory channel is made up of an SOH (section over head) frame to detect an error of the BIP (bit interleaved parity) byte of SOH, thereby supervising the quality of the optical communication system, in particular, the light wave network.

Optical signal quality supervisory device

Growing community of inventors

Tokyo, Japan

Yojiro Osaki