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...

2006-01-31

2009-06-23

Connelly Cushwa, Michelle R (Department: 2874)

Optical waveguides

Accessories

Attenuator

C398S136000, C398S137000, C398S139000

Reexamination Certificate

active

07551828

ABSTRACT:
An optical transmission device includes: an attenuator that attenuates an optical signal before being input into an optical element by a predetermined attenuation amount determined so that a level of an adjustment optical signal input into the optical element falls within a predetermined dynamic range of the optical element; and a controller that adjusts the predetermined attenuation amount so that a level of the optical signal input into the optical element falls within the predetermined dynamic range.

REFERENCES:
patent: 6433925 (2002-08-01), Sakano et al.
patent: 6744964 (2004-06-01), Vittal
patent: 2002/0101651 (2002-08-01), Dugan et al.
patent: 2002/0154359 (2002-10-01), Tsuda et al.
patent: 2004/0109661 (2004-06-01), Bierman et al.
patent: 2005/0158057 (2005-07-01), Tomofuji et al.
patent: 11-17259 (1999-01-01), None
patent: 2004-147122 (2004-05-01), None

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