Quasi-bound states in resonant dielectric metastructures for integrated photonics

Sang-Yeon Cho; Andrea Alù; Weimin Zhou; Jason Sun

doi:10.1117/12.2608316

5 March 2022 Quasi-bound states in resonant dielectric metastructures for integrated photonics

Sang-Yeon Cho, Andrea Alù, Weimin Zhou, Jason Sun

Author Affiliations +

Proceedings Volume 12011, High Contrast Metastructures XI; 1201103 (2022) https://doi.org/10.1117/12.2608316
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

We report light trapping and guiding properties in resonant dielectric metastructures for chip-scale photonic integrated circuit applications. Recently, several optical phenomena in all-dielectric structures have shown a new way to tightly confine light through the engineering of resonant scattering. The engineered resonant light scattering in dielectric artificial subwavelength structures can be utilized as an efficient light coupling platform between free space and integrated photonic devices, and strongly tailor light-matter interactions for a variety of metasurface applications. In this paper, we present the design and numerical modeling of high-index subwavelength asymmetric resonant structures that can guide light for integrated photonic circuits. The metastructures reported here consist of all-dielectric two-dimensional optical antenna arrays patterned on a slab waveguide. Light coupling can be achieved by synchronizing the phase of the resonantly scattered light by the subwavelength antennas to that of the guided modes in the waveguide. Resonant light scattering by high-index subwavelength resonators can lead to light trapping through the excitation of quasi photonic bound states in the continuum. This unique feature can be used to selectively launch a guided mode into a photonic waveguide at a predetermined spectral band.

Conference Presentation

Citation Download Citation

Sang-Yeon Cho, Andrea Alù, Weimin Zhou, and Jason Sun "Quasi-bound states in resonant dielectric metastructures for integrated photonics", Proc. SPIE 12011, High Contrast Metastructures XI, 1201103 (5 March 2022); https://doi.org/10.1117/12.2608316

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE