We study, both theoretically and experimentally, modulational instability in optical fibers that have a longitudinal evolution of their dispersion in the form of a Dirac delta comb. By means of Floquet theory, we obtain an exact expression for the position of the gain bands, and we provide simple analytical estimates of the gain and of the bandwidths of those sidebands. An experimental validation of those results has been carried out in severalmicrostructured fibers specifically manufactured for that purpose. The dispersion landscape of those fibers is a comb of Gaussian pulses having widths much shorter than the period, which therefore approximate the ideal Dirac comb. Experimental spontaneous modulational instability spectra recorded under quasicontinuous wave excitation are in good agreement with the theory and with numerical simulations based on the generalized nonlinear Schr¨odinger equation.

Modulational instability in dispersion-kicked optical fibers

TRILLO, Stefano
Penultimo
;
2015

Abstract

We study, both theoretically and experimentally, modulational instability in optical fibers that have a longitudinal evolution of their dispersion in the form of a Dirac delta comb. By means of Floquet theory, we obtain an exact expression for the position of the gain bands, and we provide simple analytical estimates of the gain and of the bandwidths of those sidebands. An experimental validation of those results has been carried out in severalmicrostructured fibers specifically manufactured for that purpose. The dispersion landscape of those fibers is a comb of Gaussian pulses having widths much shorter than the period, which therefore approximate the ideal Dirac comb. Experimental spontaneous modulational instability spectra recorded under quasicontinuous wave excitation are in good agreement with the theory and with numerical simulations based on the generalized nonlinear Schr¨odinger equation.
2015
Rota Nodari, S.; Conforti, M.; Dujardin, G.; Kudlinski, A.; Mussot, A.; Trillo, Stefano; De Bièvre, S.
File in questo prodotto:
File Dimensione Formato  
PhysRevA.92.013810.pdf

accesso aperto

Tipologia: Full text (versione editoriale)
Licenza: Creative commons
Dimensione 869.39 kB
Formato Adobe PDF
869.39 kB Adobe PDF Visualizza/Apri

I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2334497
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 6
social impact