Photonic compressive sensing enabled data efficient time stretch optical coherence tomography

Mididoddi, Chaitanya K and Wang, Chao (2018) Photonic compressive sensing enabled data efficient time stretch optical coherence tomography. In: Podoleanu, Adrian G.H. and Bang, Ole, eds. Proceedings of SPIE. Proceedings of the 2nd Canterbury Conference on OCT with Emphasis on Broadband Optical Sources. SPIE ISBN 978-1-5106-1674-5. (doi: (Full text available)

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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. © (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Item Type: Conference or workshop item (Proceeding)
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Depositing User: Chao Wang
Date Deposited: 17 May 2018 09:40 UTC
Last Modified: 17 May 2018 09:41 UTC
Resource URI: (The current URI for this page, for reference purposes)
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