Colja Schubert

TL;DR: In this paper , the physical background of ultra-broadband optical wavelength conversion in a highly nonlinear multi-modal Silicon-On-Insulator (SOI-) waveguide and methods to model and optimize its functionality are outlined.

TL;DR: In this article, an error-free bit-error ratio < 10−9 (BOR) generation and amplification of phase-coded signals with a symbol rate up to 40 GBd using quantum-dot (QD) based semiconductor optical amplifiers (SOA) emitting at a wavelength of 1.3 µm.

TL;DR: In this article, an ultra-broadband all-optical frequency multiplexing technique on a single optical carrier using cross-phase modulation in nonlinear fibers was developed, and demonstrated sequentially multiplex of multi-channel Gigabit ASK/DPSK signals on the THz-band.

TL;DR: In this paper, the authors analyzed the achievable semantic security guarantees for a wiretap channel with finite-blocklength communication links for industrial indoor terahertz (THz) wireless communication applications and showed that weakly directed transmitter antennas, which allow cell-type communication with multiple legitimate receivers (Bobs) without adaptation of the alignment, result in large insecure regions.

TL;DR: This work experimentally compares fiber nonlinearity mitigation by optical phase conjugation based on either intra- or inter-modal four-wave mixing and finds both realizations achieve similar performance in 800-km dispersion-managed single-mode fiber link.