Now showing items 1-6 of 6

    • Anti-stokes Raman gain enabled by modulation instability in mid-IR waveguides 

      Sánchez, Alfredo D.; Fierens, Pablo Ignacio; Hernández, Santiago M.; Bonetti, Juan I.; Brambilla, Gilberto; Grosz, Diego (2018-11)
      "The inclusion of self-steepening in the linear stability analysis of modulation instability (MI) leads to a power cutoff above which the MI gain vanishes. Under these conditions, MI in mid-IR waveguides is shown to give ...
    • Enhanced anti-stokes Raman gain in nonlinear waveguides 

      Sánchez, Alfredo D.; Hernández, Santiago M.; Bonetti, Juan I.; Grosz, Diego; Fierens, Pablo Ignacio (2019)
      "We show that, under certain conditions, modulation instability in nonlinear waveguides gives rise to the usual double-sideband spectral structure, but with a Raman gain profile. This process is enabled by the energy ...
    • A higher-order perturbation analysis of the nonlinear Schrödinger equation 

      Bonetti, Juan I.; Hernández, Santiago M.; Fierens, Pablo Ignacio; Grosz, Diego (2019-06)
      "A well-known and thoroughly studied phenomenon in nonlinear wave propagation is that of modulation instability (MI). MI is usually approached as a perturbation to a pump, and its analysis is based on preserving only terms ...
    • Photon-conserving generalized nonlinear Schrödinger equation for frequency-dependent nonlinearities 

      Bonetti, Juan I.; Linale, N.; Sánchez, Alfredo D.; Hernández, Santiago M.; Fierens, Pablo Ignacio; Grosz, Diego (2020)
      "Pulse propagation in nonlinear waveguides is most frequently modeled by resorting to the generalized nonlinear Schrödinger equation (GNLSE). In recent times, exciting new materials with peculiar nonlinear properties, such ...
    • Simple method for estimating the fractional Raman contribution 

      Sánchez, Alfredo D.; Linale, N.; Bonetti, Juan I.; Hernández, Santiago M.; Fierens, Pablo Ignacio; Brambilla, Gilberto; Grosz, Diego (2019-02)
      "We propose a novel and simple method for estimating the fractional Raman contribution, fR, based on an analysis of a full model of modulation instability (MI) in waveguides. An analytical expression relating fR to the MI ...
    • Tunable Raman gain in mid-IR waveguides 

      Sánchez, Alfredo D.; Hernández, Santiago M.; Bonetti, Juan I.; Fierens, Pablo Ignacio; Grosz, Diego (2018)
      "By means of theoretical analysis and numerical simulations, we show a tunable Raman gain which may find applications in a variety of fields, ranging from mid-IR fiber Raman lasers and supercontinuum generation to ...