Optical transmission device for controlling optical level of...

Details Optical transmission device for controlling optical level of... Optical transmission device for controlling optical level of...

2006-02-28

2009-08-25

Sedighian, M. R. (Department: 2613)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S033000, C398S025000, C398S079000

Reexamination Certificate

active

07580631

ABSTRACT:
An optical transmission device includes: an attenuator that attenuates an optical signal from an adjacent optical transmission device; an optical element that is arranged downstream of the attenuator; a detector that detects a change in a characteristic of a transmission path; and a controller that adjusts, when the change is detected, an attenuation of the attenuator to keep the level of the optical signal input to the optical element at a predetermined level.

REFERENCES:
patent: 6433925 (2002-08-01), Sakano et al.
patent: 6959149 (2005-10-01), Bragg et al.
patent: 2006/0285846 (2006-12-01), Uekama et al.
patent: 11-17259 (1999-01-01), None
patent: 2004-147122 (2004-05-01), None

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