Dual Comb interferometry to enhance OCT capabilities

Important results from the project

The development of a post-processing algorithm has been implemented for the characterization of device under test in one dimension (1D). The natural next step is to modify and extend the post-processing code to handle more data as it is expected once the imaging in two dimensions is completed. To recover the data in 2D, a program is under development. This has been proposed as a sub-project that can also serve for such as automatic alignment of fibers. The purpose is to develop a control script to scan over two dimensions of the device under test and recover the data.

Expected long term effects

A direct results is the implementation of two interferometers, one based on dual-comb configuration and one with a continuous wave laser. It has enabled us to build and troubleshoot a system that can be easily modified to perform a set of different measurements such as vibrometry, optical reflectometry, and OCT, as well as explore different post-processing techniques. Other stakeholders have taken an active role in the development of the project, which can be used in future implementations such as hyperspectral imaging.

Approach and implementation

The interferometers were mainly constructed with components from Chalmers according to the experimental setup drawn up in the original proposal. This system consists of a large instrumental set, but can be implemented with new new frequency comb generators on chip. The project has established a solid foundation for data collection and analysis that is independent of the type of frequency cams used. The next steps in the work should focus on in the mobility of the experimental setup out of the lab for real tests.