Juliusz Bojarczuk

FEIT Warsaw University of Technology

Nowowiejska 15/19 room 582

Warsaw, 00-665 Poland

I’m an aspiring researcher at the Warsaw University of Technology, specializing in the field of optical telecommunications and free-space communication, with a particular interest in Bragg gratings (of course not free-space 😂).

If you’re into the topics I’m exploring, I’m totally down to grab a coffee and chat or swap experiences. Hit me up by email or on LinkedIn and let’s connect!

My current research focuses on the development of advanced signal processing techniques for Bragg grating-based sensor networks that employ Code Division Multiplexing. Additionally, my work involves the development of optimization methods aimed at increasing the overall performance of such systems. If you’d like to learn more about my research or discuss any related topics, please don’t hesitate to reach out to me.

news

Mar 15, 2023	Yay finally received "Perły Nauki" grant 🥳🪅🍾

selected publications

Volterra predistorter for the dynamic nonlinearity of LED

Grzegorz Stepniak, Michal Marzecki, and Juliusz Bojarczuk

Optics Letters, Mar 2022

Abs

In this Letter, we propose the application of a Volterra predistorter to compensate for the second-order nonlinear distortion generated in light-emitting diode (LED) communication systems. We demonstrate that a predistorter dedicated specifically to the LED has linear (not quadratic) numerical processing complexity. Experimental investigation performed using pulse amplitude modulation (PAM-4) indicates that it achieves similar performance as the classical Volterra equalizer located at the receiver. The highest measured gain in electrical signal to noise and interference power ratio of predistortion over linear equalization was at 300 Mbaud and was approximately 3.5 dB. At the same baud rate, the unpredistorted signal had a received optical power penalty of up to 2.5 dBm compared with the predistorted signal.
Analysis of the Performance of WDM-CDM Bragg Grating Interrogation System With High-Contrast Grating VCSEL

Konrad Markowski, Juliusz Bojarczuk, Piotr Araszkiewicz, and 3 more authors

Journal of Lightwave Technology, Mar 2023