Nonlinear wavelength conversion in photonic crystal fibers with three zero dispersion points

TL;DR

This theoretical study demonstrates that a specially designed photonic crystal fiber can have three zero-dispersion wavelengths, offering enhanced control over nonlinear wavelength conversion processes for applications like supercontinuum generation and quantum optics.

Contribution

We show that a simple endlessly single-mode photonic crystal fiber can be engineered to have three zero-dispersion points, expanding the possibilities for nonlinear spectral control.

Findings

Presence of three zero-dispersion wavelengths in the fiber

Enhanced phase-matching topology for nonlinear processes

Potential applications in supercontinuum and quantum optics

Abstract

In this theoretical study, we show that a simple endlessly single-mode photonic crystal fiber can be designed to yield, not just two, but three zero-dispersion wavelengths. The presence of a third dispersion zero creates a rich phase-matching topology, enabling enhanced control over the spectral locations of the four-wave-mixing and resonant-radiation bands emitted by solitons and short pulses. The greatly enhanced flexibility in the positioning of these bands has applications in wavelength conversion, supercontinuum generation and pair-photon sources for quantum optics.