resonanspar

Resonanspar, or resonance pair, is a term used to describe two resonant modes of a system that interact through coupling. When two resonances lie near each other in frequency, energy can be exchanged between the modes, leading to splitting of the observed resonance into two distinct peaks. The degree of splitting depends on the coupling strength and the damping of the modes.

The concept appears in many areas of physics and engineering, including acoustics, mechanics, electronics, and photonics. Examples include two pendulums connected by a spring, two closely spaced LC resonators linked by mutual inductance, and paired optical or plasmonic resonators such as dimers. In these systems the interaction creates hybridized modes, often with different spatial or spectral characteristics and with energy exchanged between the components.

In practice, resonanspar describes energy transfer and mode hybridization in the spectrum, where the original single resonance splits into two hybrids sometimes labeled as symmetric and antisymmetric modes. The observable effect is an anti-crossing of the resonance curves as system parameters (such as coupling strength or detuning) are varied.

Relation to related ideas includes normal-mode splitting, hybridization of modes, and, in quantum and nano-optics contexts, phenomena like Rabi splitting or Fano resonances that arise from interference between pathways. Understanding resonanspar helps in designing devices for sensing, filtering, and controlling light or mechanical vibrations through controlled coupling.