Appl. Sci. 2016, 6(11), 360; https://doi.org/10.3390/app6110360
Extending the Effective Ranging Depth of Spectral Domain Optical Coherence Tomography by Spatial Frequency Domain Multiplexing
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
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))
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
Figure 1
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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.
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