2023, Volume 30, Issue 11
Engineering >> 2023, Volume 30, Issue 11 doi: 10.1016/j.eng.2023.04.005
Synthesized All-Pass Waveguide for Ultrafast Electronics
Poly-Grames Research Center, Department of Electrical Engineering, Polytechnique Montreal, University of Montreal, Montreal, QC H3T 1J4, Canada
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Abstract
Ultrashort pulse transmission has been recognized as a primary problem that fundamentally hinders the development of ultrafast electronics beyond the current nanosecond timescale. This requires a transmission line or waveguide that exhibits an all-pass frequency behavior for the transmitted ultrashort pulse signals. However, this type of waveguiding structure has not yet been practically developed; groundbreaking innovations and advances in signal transmission technology are urgently required to address this scenario. Herein, we present a synthesized all-pass waveguide that demonstrates record guided-wave controlling capabilities, including eigenmode reshaping, polarization rotation, loss reduction, and dispersion improvement. We experimentally developed two waveguides for use in ultrabroad frequency ranges (direct current (DC)-to-millimeter-wave and DC-to-terahertz). Our results suggest that the waveguides can efficiently transmit picosecond electrical pulses while maintaining signal integrity. This waveguide technology is an important breakthrough in the evolution of ultrafast electronics, providing a path towards frequency-engineered ultrashort pulses for low-loss and low-dispersion transmissions.
Keywords
All-pass waveguide ; Ultrashort pulse ; Picosecond transmission ; Ultrafast electronics ; Terahertz technology ; Mode-selective transmission line
SupplementaryMaterials
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