Interpreting S-Parameter Spectra in Coupled Resonant Systems: The Role of Probing Configurations
arXiv:2405.07555 · doi:10.1364/OE.551120
Abstract
The S-parameter is widely used to characterize the resonant properties of various systems. However, we demonstrates that the reliability of as a true indicator of system resonances depends heavily on the specific probing setup employed. While point-probe or weak probes preserve the integrity of the spectrum and accurately reflect system resonances, multi-point and strong probes can introduce significant discrepancies. These discrepancies can manifest as misleading features such as repulsive level anti-crossing or attractive level crossing, even in systems that are fundamentally uncoupled. This highlights the critical importance of selecting appropriate probing techniques to ensure a precise evaluation of system resonances.
5 pages, 5 figures
References in corpus (18)
- Cavity Optomechanics
- Fano resonances in nanoscale structures
- Strongly coupled magnons and cavity microwave photons
- Hybrid quantum systems based on magnonics
- Bistability of Cavity Magnon Polaritons
- Enhanced sensitivity operation of an optical gyroscope near an exceptional point
- Cavity Magnonics
- Observation of the exceptional point in cavity magnon-polaritons
- Coherent long-range transfer of angular momentum between magnon Kittel modes by phonons
- Quantum control of a single magnon in a macroscopic spin system
- Dissipative couplings in cavity magnonics
- Nonlinear Fano resonance and bistable wave transmission
- Coherent coupling of two remote magnonic resonators mediated by superconducting circuits
- Control of the magnon-photon level attraction in a planar cavity
- Microscopic mechanism of level attraction
- Perturbing open cavities: Anomalous resonance frequency shifts in a hybrid cavity-nanoantenna system
- Anomalous Long-Distance Coherence in Critically-Driven Cavity Magnonics
- A loop theory for the input-output problems in cavities