Researchers Develop Adaptive Optoelectronic Magnonic Parametric Oscillator Using Interferometric Architecture
Researchers have developed and analyzed a Mach-Zehnder interferometer-based optoelectronic magnonic parametric oscillator (OEMPO) that combines a yttrium iron garnet (YIG) magnonic branch with a tunable phase-shifter branch to study adaptive interferometric oscillator dynamics. The system reveals distinct behavioral differences between two operating regimes—the phase-pinned parametric oscillator (OEPO) and the frequency-adaptive optoelectronic oscillator (OEO)—while demonstrating partial synchronization and branch-dependent adaptive redistribution. These findings establish a new experimental platform for exploring nonlinear interferometric physics and coherent phase control in hybrid magnonic-photonic systems, with potential implications for precision oscillators and signal processing.
A research team has reported a detailed study of an optoelectronic magnonic parametric oscillator built around a Mach-Zehnder interferometer architecture, incorporating a YIG-loaded magnonic branch alongside a tunable phase-shifter branch. By analyzing nondegenerate oscillator mode pairs and frequency-pulling behavior, the researchers were able to quantitatively extract the loop free spectral range and effective delay time of the system. Despite operating in a nominally frequency-pinned parametric regime, the team observed weak frequency pulling and mode softening, uncovering an additional adaptive interferometric degree of freedom introduced by the MZI design. Comparative experiments using local and global sampling configurations showed that the YIG branch acts primarily as a local dispersive resonant subsystem governed by complex magnonic susceptibility, while the phase-shifter branch controls global interferometric redistribution. Coherent recombination within the loop produces finite cross-coupling between the two branches, yielding partially synchronized dynamics. Quantitative complex-Lorentzian analysis further revealed substantial phase-to-amplitude conversion and highlighted key differences between the OEPO and OEO regimes in terms of dispersive versus mixed absorptive-dispersive behavior. The authors propose this platform as a versatile framework for future research into adaptive nonlinear interferometry and hybrid magnonic-photonic oscillator physics.
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- arXiv physicsCenter
An Adaptive Coherent Interferometric Oscillator Based on an Optoelectronic Magnonic Parametric Oscillator
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