Relay transmission apparatus

Details Relay transmission apparatus Relay transmission apparatus

2004-07-28

2009-06-16

Wang, Quan-Zhen (Department: 2613)

Optical communications

Multiplex

Optical local area network

C398S045000, C398S005000

Reexamination Certificate

active

07548693

ABSTRACT:
A relay transmission apparatus in which the effectiveness of a protecting function is improved by suppressing variation of an OSNR value of a signal regardless of the distance that the signal is transmitted. The relay transmission apparatus is comprised of a first regenerative relay unit, a second regenerative relay unit, and a protection process unit for extracting a signal component from each of the first and second regenerative relay units and selectively outputting either of the extracted signal components as a drop signal.

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Notification of Reasons for Rejection mailed Jan. 13, 2009, from the corresponding Japanese Application.

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