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Proceedings Paper

Photonic compressive sensing enabled data efficient time stretch optical coherence tomography
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Paper Abstract

Photonic time stretch (PTS) has enabled real time spectral domain optical coherence tomography (OCT). However, this method generates a torrent of massive data at GHz stream rate, which requires capturing as per Nyquist principle. If the OCT interferogram signal is sparse in Fourier domain, which is always true for samples with limited number of layers, it can be captured at lower (sub-Nyquist) acquisition rate as per compressive sensing method. In this work we report a data compressed PTS-OCT system based on photonic compressive sensing with 66% compression with low acquisition rate of 50MHz and measurement speed of 1.51MHz per depth profile. A new method has also been proposed to improve the system with all-optical random pattern generation, which completely avoids electronic bottleneck in traditional binary pseudorandom binary sequence (PRBS) generators.

Paper Details

Date Published: 5 March 2018
PDF: 5 pages
Proc. SPIE 10591, 2nd Canterbury Conference on OCT with Emphasis on Broadband Optical Sources, 105910F (5 March 2018); doi: 10.1117/12.2283035
Show Author Affiliations
Chaitanya K. Mididoddi, Univ. of Kent (United Kingdom)
Chao Wang, Univ. of Kent (United Kingdom)


Published in SPIE Proceedings Vol. 10591:
2nd Canterbury Conference on OCT with Emphasis on Broadband Optical Sources
Adrian Podoleanu; Ole Bang, Editor(s)

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