Noise in supercontinuum generated using PM and non-PM tellurite glass all-normal dispersion fibers

TL;DR

This study compares intensity noise in supercontinuum generation within polarization-maintaining and non-PM tellurite fibers, revealing that PM fibers exhibit lower noise due to suppressed polarization modulation instability, supported by experiments and simulations.

Contribution

It demonstrates the advantage of PM fibers in reducing supercontinuum noise, highlighting the role of polarization-maintaining properties in low-noise supercontinuum generation.

Findings

PM fibers exhibit lower intensity noise than non-PM fibers.

Dispersive Fourier transformation effectively resolves shot-to-shot spectral fluctuations.

Suppression of polarization modulation instability explains the low-noise behavior in PM fibers.

Abstract

Intensity fluctuations in supercontinuum generation are studied in polarization-maintaining (PM) and non-PM all-normal dispersion tellurite photonic crystal fibers. Dispersive Fourier transformation is used to resolve the shot-to-shot spectra generated using 225 fs pump pulses at 1.55 {\mu}m, with experimental results well reproduced by vector and scalar numerical simulations. By comparing the relative intensity noise for the PM and non-PM cases, supported by simulations, we demonstrate the advantage of the polarization-maintaining property of the PM fibers in preserving low-noise dynamics. We associate the low-noise in the PM case with the suppression of polarization modulation instability.