Title :
Low-noise optimisation of current-mode, common-gate transimpedance optical preamplifiers
Author :
Vanisri, Tongtod ; Gonzalez-Wiren, F. ; Toumazou, Chris
Author_Institution :
Dept. of Electr. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK
Abstract :
The most significant figure of merit of a transimpedance preamplifiers in fibre-optics systems is the sensitivity which is determined by the equivalent input noise current of the preamplifier. The FET input-stage preamplifier may be designed for optimum sensitivity by choosing a proper FET size for a given photodiode capacitance. The optimum FET size for a current-mode common-gate transimpedance preamplifier is described
Keywords :
optical fibres; optical receivers; p-i-n photodiodes; preamplifiers; FET input-stage preamplifier; FET size; common-gate transimpedance optical preamplifiers; current-mode preamplifiers; equivalent input noise current; fibre-optics systems; photodiode capacitance; sensitivity;
Conference_Titel :
Linear Analogue Circuits and Systems, IEE Colloquium on
Conference_Location :
Oxford
