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Conferences > FiO > 2011 > FTuT > FTuT5

Optical A/D using Oversampling by Second-Order DSM

E. Reeves, P. Costanzo-Caso, S. Granieri, and A. Siahmakoun

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Abstract

A novel photonic analog-to-digital convertor (A/D) based on an asynchronous delta-sigma modulation (ADSM) technique has been investigated and demonstrated for the first time in this paper. The operating principles of the proposed optical 2nd-order ADSM is analyzed. Two main components of the new optical ADSM; the leaky integrator and the inverted bistable quantizer have been studied, simulated, constructed, and experimentally characterized. The prototype fiber-optic ADSM operates at 30 MS/s with corresponding binary output having ENOB of 6.

© 2011 Optical Society of America

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