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Proceedings Paper

A transient waveform digitiser for wideband signal capture
Author(s): G. J. McDonald; J. Olliero; M. J. Cooper; R. A. Wilson
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Paper Abstract

An opto-electronic transient waveform digitiser is detailed which combines the massive bandwidth of commercially available optical components with the high resolution sampling capabilities of state-of-the-art electronic analogue to digital converters (ADCs). Core to the success of a 64 GSa/s sampling rate has been the development of an automated temperature stabilised fibre delay line structure. This generates multiple replicas of short incoming pulses, which are then digitised using the Vernier sampling technique. The successful temperature stabilisation of the optical sub-components now offers the potential for an environmentally rugged fibre based system, with small system footprint, and low power requirements through the use of a single electronic ADC and compact diode laser technology. System modelling indicates that the fibre delay line architecture performance could currently support very high sample rates, with the total system sample rate scaling directly with future electronic ADC improvements.

Paper Details

Date Published: 3 October 2006
PDF: 12 pages
Proc. SPIE 6399, Advanced Free-Space Optical Communication Techniques/Applications II and Photonic Components/Architectures for Microwave Systems and Displays, 63990N (3 October 2006); doi: 10.1117/12.689948
Show Author Affiliations
G. J. McDonald, QinetiQ (United Kingdom)
J. Olliero, QinetiQ (United Kingdom)
M. J. Cooper, QinetiQ (United Kingdom)
R. A. Wilson, QinetiQ (United Kingdom)


Published in SPIE Proceedings Vol. 6399:
Advanced Free-Space Optical Communication Techniques/Applications II and Photonic Components/Architectures for Microwave Systems and Displays
Lars J. Sjöqvist; Rebecca Wilson, Editor(s)

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