Transmission Optical Coherence Tomography Sensing” – Presented by Jeroen Kalkman, TU Delft.We present results of the use of Fourier-domain transmission optical coherence tomography (OCT) to measure the optical properties of turbid media. A theory on the OCT signal both in the spectral and in the spatial domain is presented. From the phase of the transmission OCT signal the phase index and group velocity index of glasses and (mixtures) of ﬂuids is determined. From the amplitude of the transmission OCT signal we determine the scattering and absorption coeﬃcients for suspensions of silica particles in water over the spectral bandwidth. Applications in the food, dairy, oil, medical field are presented.
Optical Coherence Tomography (OCT) is a relatively new method of examining living tissue, which uses light instead of needles and incisions. Current OCT systems are rather cumbersome and involve a trolley laden with equipment being pushed through the hospital. This is expensive, unwieldy and unsuitable for a family doctor to carry out a quick check. The Academic Medical Centre of the University of Amsterdam (AMC), among others, is keen to miniaturise the trolley by using integrated optical circuitry. Continue reading “Integrated Photonics helps Optical Coherence Tomography to Set New Non-Invasive Standard”