Analysis of fiber-optic probes using graded-index fiber microlenses with non-ideal refractive index profiles

Lorenser, D., Yang, X. and Sampson, D.D. (2012) Analysis of fiber-optic probes using graded-index fiber microlenses with non-ideal refractive index profiles

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Abstract

Fiber-optic probes for sensing and imaging applications often employ sections of graded-index (GRIN) fiber to refocus the diverging light from the delivery fiber. Such GRIN fiber microlenses possess aberrations which can cause significant distortions of the focused output beam. Using a numerical beam propagation method, we analyze the output beams resulting from index profiles that exhibit a central dip or a deviation from the ideal parabolic shape. Our method is in good agreement with experimental data and it enables the accurate simulation of fiber probes for biomedical applications using non-ideal or custom-engineered GRIN fibers with arbitrary refractive index profiles.

Item Type:	Conference or Workshop Item (UNSPECIFIED)
Divisions :	Faculty of Engineering and Physical Sciences Faculty of Health and Medical Sciences
Authors :	Name Email ORCID Lorenser, D. Yang, X. Sampson, D.D. d.sampson@surrey.ac.uk
Date :	2012
DOI :	10.1117/12.974907
Uncontrolled Keywords :	Beam propagation method, Fiber probe, Graded-index, Microlens, Optical coherence tomography, Arbitrary refractive index, Biomedical applications, Fiber probe, Graded index, Graded-index fibers, Micro-lens, Refractive index profiles, Sensing and imaging, Beam propagation method, Fiber optics, Medical applications, Microlenses, Optical tomography, Probes, Fibers
Depositing User :	Maria Rodriguez-Marquez
Date Deposited :	05 Jun 2018 15:00
Last Modified :	19 Sep 2018 11:32
URI:	http://epubs.surrey.ac.uk/id/eprint/846828

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