Enhancing the robustness of coupling between a single emitter and a photonic crystal waveguide

TL;DR

This paper introduces a heuristic model linking photonic crystal waveguide geometry to Purcell enhancement, proposing design strategies that improve robustness against fabrication defects for targeted wavelength applications.

Contribution

It presents a novel heuristic model and design approaches to optimize Purcell enhancement in photonic crystal waveguides with increased robustness.

Findings

Proposed structures show robustness to fabrication defects.

Model effectively predicts Purcell enhancement based on geometry.

Design strategies improve performance at target wavelengths.

Abstract

We present a heuristic mathematical model of the relation between the geometry of a photonic crystal waveguide and the Purcell enhancement factor at a particular wavelength of interest. We use this model to propose approaches to the design of a photonic crystal waveguide maximizing the Purcell enhancement at a target wavelength. Numerical simulations indicate that the proposed structures exhibit robustness to fabrication defects introduced into photonic crystal geometry.