Design of graded topological resonator for sensitivity improvement

Amit Kumar Goyal; Diptimayee Dash; Jasmine Saini; Yehia Massoud

doi:10.1117/12.2685813

28 November 2023 Design of graded topological resonator for sensitivity improvement

Amit Kumar Goyal, Diptimayee Dash, Jasmine Saini, Yehia Massoud

Proceedings Volume 12764, Optoelectronic Devices and Integration XII; 127641I (2023) https://doi.org/10.1117/12.2685813
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

In this paper, a hyperbolic-graded topological nanophotonic resonator is proposed to excite topologically protected edge states (TES). The index grading is introduced to modify the dispersion characteristics and enhance the mode field confinement of TES. The optimized structure leads to the excitation of a TES at a 1521nm operating wavelength. Further, the structural capability of the refractive index sensor is demonstrated. The analytical results demonstrate a sensitivity of 1806 nm/RIU (with a refractive index range from 1.35 to 1.40). Thus, showing its potential to detect and sense various biochemical analytes accurately.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Amit Kumar Goyal, Diptimayee Dash, Jasmine Saini, and Yehia Massoud "Design of graded topological resonator for sensitivity improvement", Proc. SPIE 12764, Optoelectronic Devices and Integration XII, 127641I (28 November 2023); https://doi.org/10.1117/12.2685813

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