TY - CONF

T1 - Asymmetric Gain-Guided Pulses

AU - Turitsyn, Sergei

AU - Bednyakova, Anastasia

AU - Podivilov, Evgeniy

N1 - To conclude, our theory and numerical simulations provide insight into the nature of stable asymmetric pulse capable to accumulate large nonlinear phase without wave-breaking beyond the parabolic pulse approximation. The work of AB was supported by RSF (project No.17-72-30006).

PY - 2023

Y1 - 2023

N2 - In many practical problems dealing with optical amplification a frequency dependence of the gain (that usually is broader compared to the considered signal bandwidth) is assumed to be symmetric and is approximated by the Lorentzian spectral shape [1-2]. This is often a justified assumption in the spectral region near the peak of the gain curve. There are, however, relatively less explored possibilities to use edges of the gain profile where amplification is not symmetric. In recent work of the Cornell group [3] a new type of asymmetric nonlinear pulse propagation was demonstrated distinguished by the presence of a dynamically-evolving gain spectrum. The dynamic change of the gain and spectral broadening led to quasi-stable regimes where pulse was partially propagating at the edge of the material gain curve. We anticipate that our analysis of much more simple model might provide useful insight into characteristics of nonlinear pulse propagation in a medium with spectrally asymmetric amplification, beyond standard parabolic gain curve approximations.

AB - In many practical problems dealing with optical amplification a frequency dependence of the gain (that usually is broader compared to the considered signal bandwidth) is assumed to be symmetric and is approximated by the Lorentzian spectral shape [1-2]. This is often a justified assumption in the spectral region near the peak of the gain curve. There are, however, relatively less explored possibilities to use edges of the gain profile where amplification is not symmetric. In recent work of the Cornell group [3] a new type of asymmetric nonlinear pulse propagation was demonstrated distinguished by the presence of a dynamically-evolving gain spectrum. The dynamic change of the gain and spectral broadening led to quasi-stable regimes where pulse was partially propagating at the edge of the material gain curve. We anticipate that our analysis of much more simple model might provide useful insight into characteristics of nonlinear pulse propagation in a medium with spectrally asymmetric amplification, beyond standard parabolic gain curve approximations.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85175702739&origin=inward&txGid=7ad262c144c6194fff322950485919c2

UR - https://www.mendeley.com/catalogue/c7357244-cf05-361c-a872-863e9f733eca/

U2 - 10.1109/cleo/europe-eqec57999.2023.10231661

DO - 10.1109/cleo/europe-eqec57999.2023.10231661

M3 - Paper

ER -