Parity-Time Symmetric Coupled Microresonators with a Dispersive Gain/Loss
arXiv:1501.07455 · doi:10.1364/OE.23.011493
Abstract
The paper reports on the coupling of Parity-Time (PT)-symmetric whispering gallery resonators with realistic material and gain/loss models. Response of the PT system is analyzed for the case of low and high material and gain dispersion, and also for two practical scenarios when the pump frequency is not aligned with the resonant frequency of the desired whispering gallery mode and when there is imbalance in the gain/loss profile. The results show that the presence of dispersion and frequency misalignment causes skewness in frequency bifurcation and significant reduction of the PT breaking point, respectively. Finally, as coupled WGM resonators are inherently lossy structures, we show that unbalancing the gain/loss in resonators is required to compensate for inherent loss of the structure and achieve improved PT properties.
arXiv comment15 pages, 11 figures
References in corpus (13)
- Nonreciprocal light transmission in parity-time-symmetric whispering-gallery microcavities
- Unidirectional Invisibility induced by PT-Symmetric Periodic Structures
- PT-Symmetric Quantum Mechanics
- Loss-induced suppression and revival of lasing
- PT-symmetry breaking and laser-absorber modes in optical scattering systems
- PT-symmetric laser-absorber
- Observation of Defect States in PT-Symmetric Optical Lattices
- PT-symmetric quantum mechanics
- Spectrally-engineered photonic molecules as optical sensors with enhanced sensitivity: a proposal and numerical analysis
- -symmetric microring laser-absorber
- Causality and phase transitions in PT-symmetrical optical systems
- Analytic Results for a PT-symmetric Optical Structure
- Impact of Dispersive and Saturable Gain/Loss on Bistability of Nonlinear Parity-Time Bragg Gratings
Cited by in corpus (18)
- Parity-time symmetry in optical microcavity systems
- Temporal Switching to Extend the Bandwidth of Thin Absorbers
- -symmetric slowing-down of decoherence
- Realization and application of parity-time-symmetric oscillators in quantum regime
- Non-adiabatic Modal Dynamics around Exceptional Points in an All-Lossy Dual-Mode Optical Waveguide: Towards Chirality Driven Asymmetric Mode-Conversion
- Third-order Exceptional Point and Successive Switching among Three States in a Degenerate Optical Microcavity
- Localized Single Frequency Lasing States in a Finite Parity-Time Symmetric Resonator Chain
- Unconventional next nearest neighbor resonance coupling and states flipping mechanism in degenerate optical microcavities
- Nonlinearity Induced Anomalous Mode Collapsing and Non-chiral Asymmetric Mode Switching around multiple Exceptional Points
- symmetry of the Su-Schrieffer-Heeger model with imaginary boundary potentials and next-nearest-neighboring coupling
- Ultra-sensitive Light Confinement Driven by Multiple Bound States in the Continuum
- Characterization of Parity-Time Symmetry in Photonic Lattices Using Heesh-Shubnikov Group Theory
- Theory and Numerical Modelling of Parity-Time Symmetric Structures in Photonics: Introduction and Grating Structures in One Dimension
- Comprehensive understanding of parity-time transitions in symmetric photonic crystals with an antiunitary group theory
- Scattering properties of a PT dipole
- Theory and Numerical Modelling of Parity-Time Symmetric Structures in Photonics: Boundary Integral Equation for Coupled Microresonator Structures
- Correlated Nonreciprocity around Conjugate Exceptional Points
- Resonant scattering of two-dimensional honeycomb PT dipole structure