Theory of Optical Bloch Oscillations in the Zigzag Waveguide Array

TL;DR

This paper investigates optical Bloch oscillations in zigzag waveguide arrays using multiple scattering formalism, analyzing second-order coupling effects and comparing numerical results with phenomenological models for C-band compatible waveguides.

Contribution

It introduces a numerical simulation approach for Bloch oscillations in zigzag waveguides considering second-order coupling effects.

Findings

Second-order coupling significantly influences Bloch oscillations.

MSF results align with phenomenological models.

Waveguides are suitable for C-band applications.

Abstract

The Bloch oscillations in the zigzag array of the optical waveguides are considered. The multiple scattering formalism (MSF) is used for the numerical simulation of the optical beam which propagates within the array. The effect of the second-order coupling which depends on the geometrical parameters of the array is investigated. The results obtained within the MSF are compared with the calculation based on the phenomenological coupling modes model. The calculations are performed for the waveguides fabricated in alkaline earth boro-aluminosilicate glass sample, which are the most promising for the C-band (1530-1565 nm).