Fano lines in the reflection spectrum of directly coupled systems of waveguides and cavities: measurements, modeling and manipulation of the Fano asymmetry
arXiv:1610.08351 · doi:10.1103/PhysRevA.96.033812
Abstract
We measure and analyze reflection spectra of directly coupled systems of waveguides and cavities. The observed Fano lines offer insight in the reflection and coupling processes. Very different from side-coupled systems, the observed Fano line shape is not caused by the termini of the waveguide, but the coupling process between the measurement device fiber and the waveguide. Our experimental results and analytical model show that the Fano parameter that describes the Fano line shape is very sensitive to the coupling condition. A movement of the fiber well below the Rayleigh range can lead to a drastic change of the Fano line shape.
References in corpus (14)
- Fano resonances in nanoscale structures
- Imaging topological edge states in silicon photonics
- Stopping Light All-Optically
- Quantum Many-Body Phenomena in Coupled Cavity Arrays
- A high-accuracy algorithm for designing arbitrary holographic atom traps
- Fano resonance control in a photonic crystal structure and its application to ultrafast switching
- Signature of a Fano-resonance in a plasmonic meta-molecule's local density of optical states
- Observation of femto-joule optical bistability involving Fano resonances in high-Q/Vm silicon photonic crystal nanocavities
- Coupled mode theory for photonic crystal cavity-waveguide interaction
- Lower bound for the spatial extent of localized modes in photonic-crystal waveguides with small random imperfections
- All-optical Switching of a Microcavity Repeated at Terahertz Rates
- Local thermal resonance control of GaInP photonic crystal membrane cavities using ambient gas cooling
- Tuning out disorder-induced localization in nanophotonic cavity arrays
- Dispersion of coupled mode-gap cavities