Special Section on Optical Coherence Tomography and Interferometry: Advanced Engineering and Biomedical Applications

All fiber optics circular-state swept source polarization-sensitive optical coherence tomography

[+] Author Affiliations
Hermann Lin

National Kaohsiung Normal University, Department of Optoelectronics & Communication Engineering, Kaohsiung 802, Taiwan

Meng-Chun Kao, Jyun-Cin Huang

National Yang-Ming University, Institute of Biophotonics, Taipei 112, Taiwan

Chih-Ming Lai

Ming-Chuan University, Department of Electronic Engineering, Taoyuan 333, Taiwan

Wen-Chuan Kuo

National Yang-Ming University, Institute of Biophotonics, Taipei 112, Taiwan

National Yang-Ming University, Biophotonics & Molecular Imaging Research Center, Taipei 112, Taiwan

J. Biomed. Opt. 19(2), 021110 (Oct 01, 2013). doi:10.1117/1.JBO.19.2.021110
History: Received May 1, 2013; Revised August 21, 2013; Accepted September 10, 2013
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Abstract.  A swept source (SS)-based circular-state (CS) polarization-sensitive optical coherence tomography (PS-OCT) constructed entirely with polarization-maintaining fiber optics components is proposed with the experimental verification. By means of the proposed calibration scheme, bulk quarter-wave plates can be replaced by fiber optics polarization controllers to, therefore, realize an all-fiber optics CS SSPS-OCT. We also present a numerical dispersion compensation method, which can not only enhance the axial resolution, but also improve the signal-to-noise ratio of the images. We demonstrate that this compact and portable CS SSPS-OCT system with an accuracy comparable to bulk optics systems requires less stringent lens alignment and can possibly serve as a technology to realize PS-OCT instrument for clinical applications (e.g., endoscopy). The largest deviations in the phase retardation (PR) and fast-axis (FA) angle due to sample probe in the linear scanning and a rotation angle smaller than 65 deg were of the same order as those in stationary probe setups. The influence of fiber bending on the measured PR and FA is also investigated. The largest deviations of the PR were 3.5 deg and the measured FA change by 12 to 21 deg. Finally, in vivo imaging of the human fingertip and nail was successfully demonstrated with a linear scanning probe.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Hermann Lin ; Meng-Chun Kao ; Chih-Ming Lai ; Jyun-Cin Huang and Wen-Chuan Kuo
"All fiber optics circular-state swept source polarization-sensitive optical coherence tomography", J. Biomed. Opt. 19(2), 021110 (Oct 01, 2013). ; http://dx.doi.org/10.1117/1.JBO.19.2.021110


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