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Proceedings Paper

Free space ranging based on a chaotic long-wavelength VCSEL with optical feedback
Author(s): Ana Quirce; Pablo Perez; Angel Valle; Luis Pesquera; Ignacio Esquivias; Krassimir Panajotov; Hugo Thienpont
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Paper Abstract

Chaotic Lidar systems (CLIDAR) are used for high-resolution ranging. They are based on the correlation of a chaotic signal waveform with the signal that is reflected back from the target. We report a novel CLIDAR system based on the autocorrelation of the signal obtained by the superposition of the chaotic signal waveform and the signal that is reflected from the target. A simplified set-up with just one detector is required in contrast to the two detectors used in standard CLIDAR systems. Our experimental results are obtained with a 1550-nm vertical-cavity surface-emitting laser (VCSEL) with chaotic dynamics due to optical feedback. Our CLIDAR system provides an autocorrelation function with several sharp minima. The position of the target is obtained from the location of those minima. A theoretical analysis of the CLIDAR system is also presented. A rate equation model for the polarization of a VCSEL subject to optical feedback is the basis for the simulation of the CLIDAR system. A comparison between our theoretical and experimental results is performed, resulting in a good agreement in the chaotic signal but in a different sign of the CLIDAR signal.

Paper Details

Date Published: 16 March 2015
PDF: 11 pages
Proc. SPIE 9357, Physics and Simulation of Optoelectronic Devices XXIII, 935703 (16 March 2015); doi: 10.1117/12.2079508
Show Author Affiliations
Ana Quirce, Vrije Univ. Brussel (Belgium)
Pablo Perez, Univ. de Cantabria (Spain)
Angel Valle, Univ. de Cantabria (Spain)
Luis Pesquera, Univ. de Cantabria (Spain)
Ignacio Esquivias, Univ. Politécnica de Madrid (Spain)
Krassimir Panajotov, Vrije Univ. Brussel (Belgium)
Institute of Solid State Physics (Bulgaria)
Hugo Thienpont, Vrije Univ. Brussel (Belgium)

Published in SPIE Proceedings Vol. 9357:
Physics and Simulation of Optoelectronic Devices XXIII
Bernd Witzigmann; Marek Osiński; Fritz Henneberger; Yasuhiko Arakawa, Editor(s)

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