True logarithmic amplification of frequency clock in SS-OCT for calibration
| Autor: | Mark E. Brezinski, Bin Liu, Ehsan Azimi |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Log amplifier
medicine.diagnostic_test Logarithm Clock signal Computer science Calibration (statistics) Phase (waves) ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Signal Atomic and Molecular Physics and Optics 010309 optics ocis:(120.3180) Interferometry Interferometry Optical coherence tomography 0103 physical sciences medicine ocis:(170.4500) Optical coherence tomography Optical Coherence Tomography 0210 nano-technology Algorithm Simulation Biotechnology |
| Zdroj: | Biomedical Optics Express |
| ISSN: | 2156-7085 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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