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Applied Sciences
Volume 6
Issue 11
10.3390/app6110360
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Open AccessArticle

Extending the Effective Ranging Depth of Spectral Domain Optical Coherence Tomography by Spatial Frequency Domain Multiplexing

by
Tong Wu
1,*,
Qingqing Wang
1,
Youwen Liu
1,2,*,
Jiming Wang
1,
Chongjun He
1 and
Xiaorong Gu
1
1
Department of Applied Physics, College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2
Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Michael Pircher
Appl. Sci. 2016, 6(11), 360; https://doi.org/10.3390/app6110360
Received: 29 September 2016 / Revised: 6 November 2016 / Accepted: 10 November 2016 / Published: 17 November 2016
(This article belongs to the Special Issue Development and Application of Optical Coherence Tomography (OCT))
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Abstract

We present a spatial frequency domain multiplexing method for extending the imaging depth range of a spectral domain optical coherence tomography (SDOCT) system without any expensive device. This method uses two galvo scanners with different pivot-offset distances in two independent reference arms for spatial frequency modulation and multiplexing. The spatial frequency contents corresponding to different depth regions of the sample can be shifted to different frequency bands. The spatial frequency domain multiplexing SDOCT system provides an approximately 1.9-fold increase in the effective ranging depth compared with that of a conventional full-range SDOCT system. The reconstructed images of phantom and biological tissue demonstrate the expected increase in ranging depth. The parameters choice criterion for this method is discussed. View Full-Text
Keywords: fiber optics imaging; medical and biological imaging; optical coherence tomography fiber optics imaging; medical and biological imaging; optical coherence tomography
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MDPI and ACS Style

Wu, T.; Wang, Q.; Liu, Y.; Wang, J.; He, C.; Gu, X. Extending the Effective Ranging Depth of Spectral Domain Optical Coherence Tomography by Spatial Frequency Domain Multiplexing. Appl. Sci. 2016, 6, 360. https://doi.org/10.3390/app6110360

AMA Style

Wu T, Wang Q, Liu Y, Wang J, He C, Gu X. Extending the Effective Ranging Depth of Spectral Domain Optical Coherence Tomography by Spatial Frequency Domain Multiplexing. Applied Sciences. 2016; 6(11):360. https://doi.org/10.3390/app6110360

Chicago/Turabian Style

Wu, Tong; Wang, Qingqing; Liu, Youwen; Wang, Jiming; He, Chongjun; Gu, Xiaorong. 2016. "Extending the Effective Ranging Depth of Spectral Domain Optical Coherence Tomography by Spatial Frequency Domain Multiplexing" Appl. Sci. 6, no. 11: 360. https://doi.org/10.3390/app6110360

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