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Proceedings Paper

Design of a long working distance graded index fiber lens with a low NA for fiber-optic probe in OCT application
Author(s): Xiaoguang Sun; Jie Li
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Paper Abstract

A fiber-optic probe for optical coherence tomography (OCT) applications typically includes a short section of graded index (GRIN) fiber fused onto a single-mode (SM) fiber. The GRIN fiber acts as a lens to focus the output of the SM fiber and to collect the reflected light from the sample. In this paper we will use the beam propagation method (BPM) to analyze the output beam characteristics such as beam radius and working distance, and then compare these with the measured results. With this tool we can design a GRIN fiber lens to achieve a long working distance without degrading the system performance.

Paper Details

Date Published: 20 February 2014
PDF: 7 pages
Proc. SPIE 8938, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIV, 89380B (20 February 2014); doi: 10.1117/12.2035971
Show Author Affiliations
Xiaoguang Sun, OFS, Specialty Photonics Div. (United States)
Jie Li, OFS, Specialty Photonics Div. (United States)


Published in SPIE Proceedings Vol. 8938:
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIV
Israel Gannot, Editor(s)

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