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Transimpedance optical preamplifier with a very low input resistance

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2 Author(s)
Wilson, B. ; UMIST, Digital Communications Group, Department of Electrical Engineering & Electronics, Manchester, UK ; Darwazeh, I.

A PIN photodiode-bipolar transistor transimpedance optical preamplifier with a very low input resistance is described that exhibits certain advantages over more conventional designs using common-emitter or common-collector input stages. The common-base input configuration enables optimum performance to be maintained with lower-cost photodiodes exhibiting a moderate capacitance of 2-7 pF.

Published in:

Electronics Letters  (Volume:23 ,  Issue: 4 )