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Proceedings Paper

Optical coherence tomography application by using optical phase shift based on fiber optic sensor
Author(s): Seung Suk Lee; Joo Ha Kim; Tae Joong Eom; Eun Seo Choi
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Paper Abstract

We demonstrate fiber-optic sensor applications to full-range complex optical coherence tomography (OCT). To extend imaging range in OCT, real value or interferogram measured from an interferometer is needed to convert into complex value. For the purpose, various treatments such as mechanical, electro-optical, optical and programming based methods have been exploited in the interferometer. To make complex signal in fiber-optic interferometer, we propose vibrationbased optical phase shifting method. The proposed method utilizes optical fiber sensors that are for the detection of vibration using optical fiber. When coiled fiber was exposed to vibration, interferogram presents fringe shift without periodicity variations, which means that vibration induces phase shift in the interferometer. Therefore, intentionally generated vibration could be applicable to controlling of the optical phase shift and retrieval of the complex signal. As a result, the vibrations applied to coiled fiber were able to remove mirror image in Fourier domain. This result proved the feasibility of the proposed method on the extending of optical imaging range.

Paper Details

Date Published: 7 March 2016
PDF: 6 pages
Proc. SPIE 9702, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVI, 970216 (7 March 2016); doi: 10.1117/12.2212925
Show Author Affiliations
Seung Suk Lee, Chosun Univ. (Korea, Republic of)
Joo Ha Kim, Chosun Univ. (Korea, Republic of)
Tae Joong Eom, Gwangju Institute of Science and Technology (Korea, Republic of)
Eun Seo Choi, Chosun Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 9702:
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVI
Israel Gannot, Editor(s)

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