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9 March 2020 Robust complex conjugate artifact removal in OCT using circularly polarized light as reference (Conference Presentation)
Xinyu Liu, Xinwen Yao, Leopold Schmetterer, Bingyao Tan
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Proceedings Volume 11228, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXIV; 112281C (2020) https://doi.org/10.1117/12.2548867
Event: SPIE BiOS, 2020, San Francisco, California, United States
Abstract
In Fourier domain OCT, the depth profile is mirrored about the zero delay, limiting the imaging depth to half of the entire ranging space. We present a novel configuration for OCT to robustly remove the complex conjugate artifact. Our method utilizes the intrinsic delay of circularly polarized light in two polarization channels, using only passive broadband polarization optics and conventional polarization diversity detection unit. Our method is immune to sample motion and adds no restrictions to source bandwidth, imaging speed or computational load. 45 dB suppression of the mirror artifact is demonstrated by an SSOCT with some in-vivo images.
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Xinyu Liu, Xinwen Yao, Leopold Schmetterer, and Bingyao Tan "Robust complex conjugate artifact removal in OCT using circularly polarized light as reference (Conference Presentation)", Proc. SPIE 11228, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXIV, 112281C (9 March 2020); https://doi.org/10.1117/12.2548867
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KEYWORDS
Optical coherence tomography
Polarization
Demodulation
Fourier transforms
In vivo imaging
Mirrors
Phase shifts
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