Scanning fiber system for angle-resolved low coherence interferometry

Yizheng Zhu; Neil G. Terry; Michael G. Giacomelli; Adam Wax

doi:10.1117/12.842093

26 February 2010 Scanning fiber system for angle-resolved low coherence interferometry

Yizheng Zhu, Neil G. Terry, Michael G. Giacomelli, Adam Wax

Proceedings Volume 7573, Biomedical Applications of Light Scattering IV; 75730J (2010) https://doi.org/10.1117/12.842093
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

We propose a fiber-optic system for Fourier-domain angle-resolved low coherence interferometry. The system is based on singlemode fiber couplers and employs a scanning fiber to collect the angular scattering distribution of the sample. The measured distribution is then fitted to Mie theory to estimate the size of the scatterers. Depth resolution is achieved with Fourier-domain low coherence Mach-Zehnder interferometry. The sample arm of the interferometer illuminates the specimen with polarized light and collects back-scattered light from the sample. The probe's optical performance is evaluated and its depth-resolved sizing capability is demonstrated with subwavelength accuracy using a two-layer microsphere phantom.

Citation Download Citation

Yizheng Zhu, Neil G. Terry, Michael G. Giacomelli, and Adam Wax "Scanning fiber system for angle-resolved low coherence interferometry", Proc. SPIE 7573, Biomedical Applications of Light Scattering IV, 75730J (26 February 2010); https://doi.org/10.1117/12.842093

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