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17 October 2012 Analysis of fiber-optic probes using graded-index fiber microlenses with non-ideal refractive index profiles
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84211W (2012) https://doi.org/10.1117/12.974907
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
Fiber-optic probes for sensing and imaging applications often employ sections of graded-index (GRIN) fiber to re-focus 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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dirk Lorenser, Xiaojie Yang, and David D. Sampson "Analysis of fiber-optic probes using graded-index fiber microlenses with non-ideal refractive index profiles", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84211W (17 October 2012); https://doi.org/10.1117/12.974907
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