Optical amplifying and relaying system

Details Optical amplifying and relaying system Optical amplifying and relaying system

2006-10-17

2006-10-17

Hellner, Mark (Department: 3663)

Optical: systems and elements

Optical amplifier

Optical fiber

C398S037000, C398S177000

Reexamination Certificate

active

07123405

ABSTRACT:
An optical amplifying and relaying system capable of easily and highly accurately monitor troubles in optical amplifiers provided in an up and a down optical fiber transmission line opposing each other is disclosed. Monitoring light signal folding-back lines including variable optical attenuators4aand4band wavelength selective reflecting means5aand5b, respectively, are provided between optical transmission lines L1and L2,which oppose each other and on which optical amplifiers4aand4bare disposed each other.

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English translation of portion of Japanese Office Action dated May 18, 2004.

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