TY - GEN
T1 - Chirped-Disordered Topological Nanophotonic Resonator for Improved Electric Field Confinement
AU - Goyal, Amit Kumar
AU - Dash, Diptimayee
AU - Saini, Jasmine
AU - Massoud, Yehia
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - In this manuscript, a disordered topological nanophotonic resonator structure has been proposed for improved electric field confinement. The topological effect is realized by connecting two photonic crystal (PhC) structures having overlapping bandgaps and opposite Zak phase. Further, an exponential graded refractive index profile is used to modify the dispersion characteristic of the device. This results in the confinement of a topological edge state at 1546nm wavelength. The structural performance is compared with the conventional step-index resonator and step-index topological resonator. The topological structure shows a 136% higher electric field intensity of confined resonating mode. The proposed graded topological structure results in a 135% higher average sensitivity than the conventional FP-cavity structure and 24% higher than the step-index topological structure.
AB - In this manuscript, a disordered topological nanophotonic resonator structure has been proposed for improved electric field confinement. The topological effect is realized by connecting two photonic crystal (PhC) structures having overlapping bandgaps and opposite Zak phase. Further, an exponential graded refractive index profile is used to modify the dispersion characteristic of the device. This results in the confinement of a topological edge state at 1546nm wavelength. The structural performance is compared with the conventional step-index resonator and step-index topological resonator. The topological structure shows a 136% higher electric field intensity of confined resonating mode. The proposed graded topological structure results in a 135% higher average sensitivity than the conventional FP-cavity structure and 24% higher than the step-index topological structure.
UR - http://www.scopus.com/inward/record.url?scp=85173598418&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85173598418&partnerID=8YFLogxK
U2 - 10.1109/NANO58406.2023.10231296
DO - 10.1109/NANO58406.2023.10231296
M3 - Conference contribution
AN - SCOPUS:85173598418
T3 - Proceedings of the IEEE Conference on Nanotechnology
SP - 998
EP - 1001
BT - 2023 IEEE 23rd International Conference on Nanotechnology, NANO 2023
PB - IEEE Computer Society
T2 - 23rd IEEE International Conference on Nanotechnology, NANO 2023
Y2 - 2 July 2023 through 5 July 2023
ER -