Tailoring the Photon Hopping by Nearest-Neighbor and Next-Nearest-Neighbor Interaction in Photonic Arrays
Year: 2015
Authors: Caselli N., Riboli F., La China F., Gerardino A., Li L.H., Linfield E.H., Pagliano F., Fiore A., Intonti F., Gurioli M.
Autors Affiliation: European Lab Nonlinear Spect, I-50019 Sesto Fiorentino, FI, Italy; Univ Florence, Dept Phys, I-50019 Sesto Fiorentino, FI, Italy; Univ Trento, Dept Phys, I-38123 Povo, TN, Italy; CNR, Inst Photon & Nanotechnol, I-00156 Rome, Italy; Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England; Eindhoven Univ Technol, COBRA Res Inst, NL-5600 MB Eindhoven, Netherlands.
Abstract: Arrays of photonic cavities are relevant structures for developing large-scale photonic integrated circuits and for investigating basic quantum electrodynamics phenomena due to the photon hopping between interacting nanoresonators. Here we investigate, by means of scanning near-field spectroscopy, numerical calculations and an analytical model, the role of different neighboring interactions that give rise to delocalized supermodes in different photonic crystal array configurations. The systems under investigation consist of three nominally identical two-dimensional photonic crystal nanocavities on membrane aligned along the two symmetry axes of the triangular photonic crystal lattice. We find that the nearest-neighbor and next-nearest-neighbor coupling terms can be of the same relevance. In this case, a nonintuitive picture describes the resonant modes, and the photon hopping between adjacent nanoresonators is strongly affected. Our findings prove that exotic configurations and even postfabrication engineering of coupled nanoresonators could directly tailor the mode spatial distribution and the group velocity in coupled resonator optical waveguides.
Journal/Review: ACS PHOTONICS
Volume: 2 (5) Pages from: 565 to: 571
More Information: This work was supported by the FET Project FP7 618025 CARTOON.KeyWords: photonic nanocavity; near-field optics; neighbor interactionDOI: 10.1021/acsphotonics.5b00041Citations: 18data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-10-20References taken from IsiWeb of Knowledge: (subscribers only)