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Proceedings Paper

A novel NLFM waveform generator using tunable integrated optical ring resonators: simulation and proof of concept experiment
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Paper Abstract

The NLFM waveform resulting from a tunable integrated optical ring resonator is simulated and compared with the well known tan-FM waveform. The metrics of interest are the first sidelobe levels and FWHM times of the autocorrelation, as these directly relate to the long-range performance and fine range resolution of a LADAR system, and should ideally be as small as possible. Through simulation, the sidelobe level of the autocorrelation of an NLFM waveform generated by a series of tunable integrated optical ring resonators is shown to be lower than the autocorrelation sidelobe level of an equivalent optimized tan-FM waveform with an equal FWHM time. A proof of concept experiment employing thermally tunable Silicon Nitride integrated optical ring resonator is shown to generate NLFM chirped waveforms with frequency chirps of 28 kHz.

Paper Details

Date Published: 29 April 2010
PDF: 12 pages
Proc. SPIE 7684, Laser Radar Technology and Applications XV, 76841A (29 April 2010); doi: 10.1117/12.850362
Show Author Affiliations
D. B Adams, Texas A&M Univ. (United States)
W. T. Snider, Texas A&M Univ. (United States)
C. K. Madsen, Texas A&M Univ. (United States)

Published in SPIE Proceedings Vol. 7684:
Laser Radar Technology and Applications XV
Monte D. Turner; Gary W. Kamerman, Editor(s)

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