Leveraging the orthogonality of Zernike modes for robust free-space optical communication

  • Konwar S
  • Boruah B
Citations of this article
Mendeley users who have this article in their library.

This artice is free to access.


Free-space optical communication systems exploit the properties of light beams to transfer information through a free-space link. Indeed such systems provide an exciting alternative for communication. Here we introduce information transfer through free-space using a laser beam having its phase encoded with multiple orthogonal aberration modes. We use Zernike polynomials, which form a complete basis set, to represent the aberration modes. The user information is converted to co-efficients of the Zernike modes which are summed digitally to obtain the resultant phase profile. A single phase modulating device then reads the resultant phase to shape the wavefront of the beam to be transmitted. The receiving station estimates the co-efficients of all modes in the beam from a single measurement of a wavefront sensor, to retrieve the user information. We demonstrate data transfer using multiple modes, each with multiple strengths, and external perturbation compensation using the completeness property of the modes.




Konwar, S., & Boruah, B. R. (2020). Leveraging the orthogonality of Zernike modes for robust free-space optical communication. Communications Physics, 3(1). https://doi.org/10.1038/s42005-020-00468-1

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free