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

Rao S.D.S., Karpate T., Ghosh A.N., Gonzalo I.B., Klimczak M., Pysz D., Buczyński R., Billet C., Bang O., Dudley J.M. and Sylvestre T.

Optics Letters

47(10), 2022, 2550-2553, 10.1364/OL.455571

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 µm, 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.