# Complete achromatic and robustness electro-optic switch between two integrated optical waveguides

## TL;DR

This paper introduces a novel, robust, broadband electro-optic switch between integrated optical waveguides, utilizing a hyperbolic-secant coupling profile and phase mismatch sign flip for complete, controllable light switching.

## Contribution

It presents a new design of an electro-optic switch with enhanced robustness, broadband operation, and controllable light intensity based on phase mismatch sign flip and hyperbolic-secant coupling.

## Key findings

- Achieved complete robust population transfer in optical switching.
- Enhanced device allows controllable light intensity via external electric field.
- Demonstrated broadband and robust performance against device variations.

## Abstract

In this paper, we present a novel design of electro-optic modulator and optical switching device, based on current integrated optics technique. The advantages of our optical switching device are broadband of input light wavelength, robustness against varying device length and operation voltages, with reference to previous design. Conforming to our results of previous paper [Huang et al, phys. lett. a, 90, 053837], the coupling of the waveguides has a hyperbolic-secant shape. while detuning has a sign flip at maximum coupling, we called it as with a sign flip of phase mismatch model. The a sign flip of phase mismatch model can produce complete robust population transfer. In this paper, we enhance this device to switch light intensity controllable, by tuning external electric field based on electro-optic effect.