Method and apparatus for protecting optical receivers from...

Details Method and apparatus for protecting optical receivers from... Method and apparatus for protecting optical receivers from...

2006-09-26

2006-09-26

Epps, George (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140AG

Reexamination Certificate

active

07112777

ABSTRACT:
A method and apparatus for protecting a photodiode of an optical receiver from overload optical signals by monitoring an operating parameter of the photodiode, determining if the operating parameter indicates that the photodiode is in a potential overload state in which the photodiode is susceptible to an overload optical signal; and applying a predetermined safe gain setting to the photodiode if a potential overload state is detected. The potential overload state may be a loss of signal condition, or detection of an overload optical power incident the photodiode.

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patent: 6313459 (2001-11-01), Hoffe et al.
patent: 6852966 (2005-02-01), Douma et al.
Quantum Devices, Inc. “Improving the Quality of Life through the Power in Light”, Quantum Facts Series: QF1-01.

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