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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 4 — Feb. 15, 2010
  • pp: 3774–3783

Photonic-based multi-wavelength sensor for object identification

Kavitha Venkataraayan, Sreten Askraba, Kamal E. Alameh, and Clifton L. Smith  »View Author Affiliations

Optics Express, Vol. 18, Issue 4, pp. 3774-3783 (2010)

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A Photonic-based multi-wavelength sensor capable of discriminating objects is proposed and demonstrated for intruder detection and identification. The sensor uses a laser combination module for input wavelength signal multiplexing and beam overlapping, a custom-made curved optical cavity for multi-beam spot generation through internal beam reflection and transmission and a high-speed imager for scattered reflectance spectral measurements. Experimental results show that five different wavelengths, namely 473nm, 532nm, 635nm, 670nm and 785nm, are necessary for discriminating various intruding objects of interest through spectral reflectance and slope measurements. Objects selected for experiments were brick, cement sheet, cotton, leather and roof tile.

© 2010 OSA

OCIS Codes
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(200.4560) Optics in computing : Optical data processing
(280.3420) Remote sensing and sensors : Laser sensors
(300.6360) Spectroscopy : Spectroscopy, laser

ToC Category:

Original Manuscript: January 12, 2010
Revised Manuscript: February 3, 2010
Manuscript Accepted: February 3, 2010
Published: February 5, 2010

Kavitha Venkataraayan, Sreten Askraba, Kamal E. Alameh, and Clifton L. Smith, "Photonic-based multi-wavelength sensor for object identification," Opt. Express 18, 3774-3783 (2010)

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