OPTICAL RECEIVER

摘要

Optical receiver with a bias circuit (T8, R2/3, R44/45) adapted to reversely bias a photodiode (PIN). This bias circuit for increasing optical power levels shifts the operating point of the photodiode (PIN) towards and into the nonlinear operating region of the photodiode which then becomes forwardly biased and for optical power levels above a predetermined value operates as a constant current source supplying a constant current (Ic) to said photodiode (PIN).