Bragg-Scattering conversion at telecom wavelengths towards the photon counting regime

TL;DR

This paper experimentally investigates Bragg-scattering four-wave mixing at telecom wavelengths in a nonlinear fiber, focusing on polarization effects and noise, with results aligning with classical models and exploring photon counting regimes.

Contribution

It provides the first detailed experimental analysis of polarization dependence and noise effects in Bragg-scattering four-wave mixing at telecom wavelengths using photon counters.

Findings

Photon counting results match classical predictions.

Polarization significantly affects scattering efficiency.

Noise impacts are analyzed under different polarization states.

Abstract

We experimentally study Bragg-scattering four-wave mixing in a highly nonlinear fiber at telecom wavelengths using photon counters. We explore the polarization dependence of this process with a continuous wave signal in the macroscopic and attenuated regime, with a wavelength shift of 23 nm. Our measurements of mean photon numbers per second under various pump polarization configurations agree well with the theoretical and numerical predictions based on classical models. We discuss the impact of noise under these different polarization configurations.