Optical force between two coupled identical parallel optical nanofibers

TL;DR

This paper investigates the optical forces between two identical parallel nanofibers, revealing how different modes produce attractive or repulsive forces and how these forces depend on fiber parameters and light wavelength.

Contribution

The study provides a rigorous analysis of optical forces in coupled nanofibers, highlighting mode-dependent behaviors and parameter influences not previously detailed.

Findings

Even array modes produce attractive forces.

Odd array modes produce repulsive forces.

Optical force magnitude peaks at specific fiber radii and wavelengths.

Abstract

We study the optical force between two coupled parallel identical nanofibers using the rigorous array mode theory. We show that the forces of the even array modes are attractive, while the forces of the odd array modes are repulsive. We examine the dependencies of the optical forces on the array mode type, the fiber radius, the light wavelength, and the fiber separation distance. We show that, for a given power and a given separation distance, the absolute value of the force achieves a peak when the fiber radius and the light wavelength are appropriate.