Swept-source sampling prototype


Optical coherence tomography (OCT) is an established medical imaging technology that uses light to scan biological tissue. A newly-developed swept-source module for medial eye diagnostics based on a proprietary semiconductor laser source with driving electronics, enables creating high-resolution 3D scans of the human eye with much more detail and precision compared to traditional diagnostics methods.


 In order to embed the described module into commercial scanners, the correct interface is required. A critical part of this interface is the high-speed clock signal used to synchronize the image acquisition with the laser’s variable wavelength. The task is to research and design a clock circuit with both a high dynamic range (center frequency of 1 GHz and deviation of +-800 KHz) as well as a low jitter (<300 ps).


The solution provides a leading edge in terms of cost-effectiveness compared to existing commercial solutions. It thereby strengthens the potential for commercialization and entry into a highly competitive market.

Completed: 2016.


Tiberiu Gabriel Zsurzsan
Associate Professor
DTU Electro
+45 45 25 36 24