H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 3/46 (2006.01) H04B 10/08 (2006.01) H04B 10/16 (2006.01) H04B 10/17 (2006.01)
Patent
CA 2301595
A relay station (10) detects any abnormality in a signal light and a monitoring light arriving from a terminal station (1) or a relay station (20) and controls the operation of optical amplifiers (11, 12) and the monitoring light based on the results of the detection. If both the signal light and monitoring light arriving from the terminal station (1) through a downstream light transmission line are abnormal, the downstream optical amplifier (11) stops its amplification operation, and a monitoring controller (13) stops the amplification operation of the upstream optical amplifier (12) and the transmission of the upstream monitoring light to the terminal station (1).
Station de relais (10) qui détecte toute anomalie dans une lumière de signal et une lumière de surveillance provenant d'une station terminale (1) ou d'une station de relais (20) et commande le fonctionnement d'amplificateurs optiques (11, 12) et de la lumière de surveillance sur la base des résultats de la détection. Si la lumière de signal ainsi que la lumière de surveillance provenant de la station terminale (1) par une ligne de transmission de lumière aval sont anormales, l'amplificateur optique aval (11) arrête son opération d'amplification et un dispositif de commande de surveillance (13) arrête l'opération d'amplification de l'amplificateur optique amont (12) et la transmission de la lumière de surveillance amont vers la station terminale (1).
Nishimura Masayuki
Shigematsu Masayuki
Marks & Clerk
Sumitomo Electric Industries Ltd.
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