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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 10 — Jul. 19, 2010

Fiber-optic interferometric two-dimensional scattering-measurement system

Yizheng Zhu, Michael G. Giacomelli, and Adam Wax  »View Author Affiliations

Optics Letters, Vol. 35, Issue 10, pp. 1641-1643 (2010)

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We present a fiber-optic interferometric system for measuring depth-resolved scattering in two angular dimensions using Fourier-domain low-coherence interferometry. The system is a unique hybrid of the Michelson and Sagnac interferometer topologies. The collection arm of the interferometer is scanned in two dimensions to detect angular scattering from the sample, which can then be analyzed to determine the structure of the scatterers. A key feature of the system is the full control of polarization of both the illumination and the collection fields, allowing for polarization-sensitive detection, which is essential for two-dimensional angular measurements. System performance is demonstrated using a double-layer microsphere phantom. Experimental data from samples with different sizes and acquired with different polarizations show excellent agreement with Mie theory, producing structural measurements with subwavelength accuracy.

© 2010 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(290.4020) Scattering : Mie theory
(290.5855) Scattering : Scattering, polarization

ToC Category:

Original Manuscript: February 19, 2010
Manuscript Accepted: March 28, 2010
Published: May 6, 2010

Virtual Issues
Vol. 5, Iss. 10 Virtual Journal for Biomedical Optics

Yizheng Zhu, Michael G. Giacomelli, and Adam Wax, "Fiber-optic interferometric two-dimensional scattering-measurement system," Opt. Lett. 35, 1641-1643 (2010)

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