ONLINE SEMINAR: All-Optical Information Processing using Diffractive Neural Networks, Dr. Onur Külçe, Mon., Dec. 7, 2020, @18:00, Zoom
December 4, 2020
Within the department's seminar series of 2020-2021 Fall Term, Dr. Onur Külçe will make a talk titled "All-Optical Information Processing using Diffractive Neural Networks".

Seminar Date : Monday, December 7, 2020
Seminar Time : 18:00 (Turkey local time)
Seminar Place : Zoom
Zoom id and passcode is on the image below.

For your questions and comments:
Dr. İsmail Uyanık,
Development of precise optical wavefront shaping and photonic material engineering modalities has led to the idea of identifying optical waves as information carrying units. For this purpose, our group has recently introduced the concept of diffractive neural network for performing sophisticated computational tasks, e.g. image classification, all-optically. Such networks are composed of diffractive surfaces located along the optical axis having free space sections between them. Spatial patterns of the surfaces that modulate light are first computed through a machine learning based training process. Then, determined surfaces are fabricated using a 3D printer in a cost- and time-effective manner. Since the computation in the testing stage is performed through optical waves, a given task is completed at the speed of light. In this talk, theoretical aspects, practical considerations, and application areas of diffractive neural networks will be covered with the emphasis on our group’s current state of the research. Future directions towards achieving optical computing units, which can be regarded as candidates for superseding conventional electronic processors, will be discussed, as well.

Onur Kulce has been working as a postdoctoral researcher at the Department of Electrical and Computer Engineering, University of California, Los Angeles (UCLA) since September 2019. He received his B.S., M.S. and Ph.D. degrees all from the Department of Electrical and Electronics Engineering, Bilkent University in 2010, 2012 and 2018, respectively. He was a Fulbright postdoctoral scholar in the 2019-2020 academic year. His research interests include signal processing for scalar and electromagnetic optical field propagation, holography and holographic 3DTV, all-optical neural networks, and machine learning and optimization for metamaterial design. He also worked as a research engineer at the Communications and Spectrum Management Research Center (ISYAM), Bilkent University between September 2017 - September 2019 and as a lecturer at the Department of Biomedical Engineering, TOBB University of Economics and Technology between January - April 2019.