alexa True logarithmic amplification of frequency clock in SS-OCT for calibration.


Journal of Lasers, Optics & Photonics

Author(s): Liu B, Azimi E, Brezinski ME

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Abstract With swept source optical coherence tomography (SS-OCT), imprecise signal calibration prevents optimal imaging of biological tissues such as coronary artery. This work demonstrates an approach using a true logarithmic amplifier to precondition the clock signal, with the effort to minimize the noises and phase errors for optimal calibration. This method was validated and tested with a high-speed SS-OCT. The experimental results manifest its superior ability on optimization of the calibration and improvement of the imaging performance. Particularly, this hardware-based approach is suitable for real-time calibration in a high-speed system where computation time is constrained.
This article was published in Biomed Opt Express and referenced in Journal of Lasers, Optics & Photonics

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