Final project students from the faculty of engineering published in PNFA International magazine

The final project of Tamir Shoresh and Nadav Katanov from the faculty of Engineering, guided by Dr. Dror Malka, was published in the prestigious in "Photonics and Nanostructures-Fundamentals Applications" magazine.

Project's title: 1x4 MMI Visible light wavelength demultiplexer based on a GaN slot-waveguide structure.

Project's Abstract:
High transmission losses are the key problem that limits the performance of visible light communication systems, which work on wavelength division multiplexing (WDM) technology.

To overcome this problem, we propose a novel design for a 1 × 4 optical demultiplexer based on the multimode interference in a slot-waveguide structure that operates at 547 nm, 559 nm, 566 nm, and 584 nm. Gallium nitride and silicon oxide were found to be excellent materials for the slot-waveguide structure.

Simulation results showed that the proposed device can transmit four channels that work in the visible light range with a low transmission loss of 0.983–1.423 dB, crosstalk of 13.8–18.3 dB, and bandwidth of 1.8–3.2 nm. Thus, this device can be very useful in visible light networking systems, which work on the WDM technology.

Link to the article:
https://www.sciencedirect.com/science/article/pii/S1569441018300427

Published:10.5.18