Interferometric system for complex image extraction [Express]



This invention relates to optical interferometric systems and, in particular, to an interferometric system and method for simultaneously obtaining absorptive and refractive properties of a sample with a high signal-to-noise ratio.

Technology transfer

This technology is available for licensing. There is an opportunity for this invention to be developed for particular applications and for demonstration of the final product through a collaborative research project. The business opportunity may be referred to by its NRC ID: 11832.

Market applications

Applications for this technology are extensive, especially in the healthcare sector in:

  • tissue diagnostics using refractive index measurements;
  • body fluids diagnostics using refractive index and/or absorption index measurements;
  • control of technological processes where refractive index and/or absorption index is used for monitoring/quality control.

How it works

The invention provides an interferometric system and method for quadrature detection of optical characteristics of a sample. The system includes a Mach-Zehnder interferometer providing a variable optical delay between light collected from the sample and reference light. A processor is provided for computing real and imaginary parts of a complex refractive index of the sample from the first and second electrical signals by using complex deconvolution.


  • Non-invasive and/or non-destructive
  • Remote measurements (even within toxic environment)
  • Axial resolution is independent of the focusing conditions


NRC file 11832:

Contact us

To inquire about this technology, please contact:

David Fraser, Business Advisor
Phone: 613-991-9972