Optical receiver protection circuit

Details Optical receiver protection circuit Optical receiver protection circuit

2007-11-20

2007-11-20

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140RC, C327S020000, C398S202000

Reexamination Certificate

active

11237079

ABSTRACT:
An apparatus for optical receiver circuit protection includes a bias source, a bias monitor, and a comparator. The bias source is to provide a bias voltage to an optical receiver. The bias monitor is coupled to measure a current through the optical receiver, where the current changes responsive to received optical energy. A comparator is coupled to the bias monitor, where the comparator has a first state if the current is less than a threshold current level and where the comparator has a second state if the current is greater than the threshold current level. The bias source is coupled to be enabled responsive to the comparator switching to the first state and disabled responsive to the comparator switching to the second state.

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