OPTICAL SIGNAL QUALITY MONITOR - MITSUBISHI ELECTRIC CORP

Title:

OPTICAL SIGNAL QUALITY MONITOR

Document Type and Number:

WIPO Patent Application WO/2000/013345

Kind Code:

A1

Abstract:

An optical signal quality monitor for simply monitoring the quality of an optical signal with high efficiency and accuracy without inviting increase in manufacturing cost, circuit scale, and power consumption. The bit rate of a monitoring signal light beam is lower than that of a main signal light beam transmitted in an optical communication system. The reception electric bandwidth of a receiver for receiving the monitoring signal light beam is equal to or wider than that of a receiver for receiving the main signal light beam. The monitoring signal light beam includes an SOH (Section Over Head) frame. Any error in the BIP (Bit Interleaved Parity) bytes of the SOH is detected. Thus, the quality of an optical communication system, especially a light-wave network is monitored.

Inventors:

MIZUOCHI TAKASHI (JP)
OSAKI YOJIRO (JP)
UEMURA ARITOMO (JP)
ICHIBANGASE HIROSHI (JP)
MATSUSHITA KIWAMI (JP)
KITAYAMA TADAYOSHI (JP)
YAMAMOTO SHU (JP)
MIYAZAKI TETSUYA (JP)
KABASHIMA TAKATOMI (JP)
KOBAYASHI NAOKI (JP)

Application Number:

PCT/JP1999/004644

Publication Date:

March 09, 2000

Filing Date:

August 27, 1999

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
KDD CORP (JP)
MIZUOCHI TAKASHI (JP)
OSAKI YOJIRO (JP)
UEMURA ARITOMO (JP)
ICHIBANGASE HIROSHI (JP)
MATSUSHITA KIWAMI (JP)
KITAYAMA TADAYOSHI (JP)
YAMAMOTO SHU (JP)
MIYAZAKI TETSUYA (JP)
KABASHIMA TAKATOMI (JP)
KOBAYASHI NAOKI (JP)

International Classes:

H04B10/077; H04B10/079; H04B10/524; H04B10/556; H04B10/07; H04J3/14; H04J14/00; H04J14/02; H04L1/20; H04Q11/04; (IPC1-7): H04B10/08; H04B17/00; H04J3/00; H04L25/02

Foreign References:

JPH04298131A	1992-10-21
JPH0396135A	1991-04-22
JPH0787018A	1995-03-31

Other References: