Increasing PS-SDOCT SNR using correlated coherent averaging

Tracy C. Petrie; Sripriya Ramamoorthy; Steven L. Jacques; Alfred L. Nuttall

doi:10.1117/12.2008963

8 March 2013 Increasing PS-SDOCT SNR using correlated coherent averaging

Tracy C. Petrie, Sripriya Ramamoorthy, Steven L. Jacques, Alfred L. Nuttall

Proceedings Volume 8565, Photonic Therapeutics and Diagnostics IX; 85651O (2013) https://doi.org/10.1117/12.2008963
Event: SPIE BiOS, 2013, San Francisco, California, United States

Abstract

Using data from our previously described otoscope¹ that uses 1310 nm phase-sensitive spectral domain optical coherence tomography (PS-SDOCT), we demonstrate a software technique for improving the signal-to-noise (SNR). This method is a software post-processing algorithm applicable to generic PS-SDOCT data describing phase versus time at a specific depth position. By sub-sampling the time trace and shifting the phase of the subsamples to maximize their correlation, the subsamples can be coherently averaged, which increases the SNR.

Citation Download Citation

Tracy C. Petrie, Sripriya Ramamoorthy, Steven L. Jacques, and Alfred L. Nuttall "Increasing PS-SDOCT SNR using correlated coherent averaging", Proc. SPIE 8565, Photonic Therapeutics and Diagnostics IX, 85651O (8 March 2013); https://doi.org/10.1117/12.2008963

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KEYWORDS

Signal to noise ratio

Optical coherence tomography

Ear

Interference (communication)

Data acquisition

Neodymium

Signal processing

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