Design of nanobeam photonic crystal resonators for a silicon-on-lithium-niobate platform

TL;DR

This paper presents the design of a hybrid silicon-lithium niobate photonic crystal resonator capable of high quality factors and strong electro-optic coupling, advancing integrated photonic device development.

Contribution

It introduces a novel hybrid silicon/lithium niobate platform with optimized resonator design for enhanced optical and electro-optic performance.

Findings

Achieved quality factors greater than 10^6.

Demonstrated electro-optic coupling rate of 0.6 GHz/V.

Enabled guiding and confinement of photonic modes in the hybrid system.

Abstract

We outline the design for a photonic crystal resonator made in a hybrid Silicon/Lithium Niobate material system. Using the index contrast between silicon and lithium niobate, it is possible to guide and confine photonic resonances in a thin film of silicon bonded on top of lithium niobate. Quality factors greater than $10^6$ at optical wavelength scale mode volumes are achievable. We show that patterning electrodes on such a system can yield an electro-optic coupling rate of 0.6 GHz/V (4 pm/V).