TY - JOUR
T1 - Self-trapping and switching of solitonic pulses in mismatched dual-core highly nonlinear fibers
AU - Nguyen, Viet Hung
AU - Tai, Le Xuan The
AU - Longobucco, Mattia
AU - Buczyński, Ryszard
AU - Bugár, Ignac
AU - Astrauskas, Ignas
AU - Pugžlys, Audrius
AU - Baltuška, Andrius
AU - Malomed, Boris
AU - Trippenbach, Marek
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2023/2
Y1 - 2023/2
N2 - We investigate experimentally and theoretically effects of the inter-core propagation mismatch on nonlinear switching in dual-core high-index-contrast soft-glass optical fibers. Incident femtosecond pulses of various energy are fed into a single (“straight”) core, to identify transitions between different dynamical regimes, viz., inter-core oscillations, self-trapping in the cross core, and retaining the pulse in the straight core. The transfer between channels, which has solitonic character, is controlled by the pulse's energy. A model based on the system of coupled nonlinear Schrödinger equations reveals the effect of the mismatch parameter and pulse duration on the diagram of the various energy dependent dynamical regimes. Optimal values of the mismatch and pulse width, which ensure stable performance of the nonlinear switching, are identified. The theoretical predictions are in agreement with experimental findings.
AB - We investigate experimentally and theoretically effects of the inter-core propagation mismatch on nonlinear switching in dual-core high-index-contrast soft-glass optical fibers. Incident femtosecond pulses of various energy are fed into a single (“straight”) core, to identify transitions between different dynamical regimes, viz., inter-core oscillations, self-trapping in the cross core, and retaining the pulse in the straight core. The transfer between channels, which has solitonic character, is controlled by the pulse's energy. A model based on the system of coupled nonlinear Schrödinger equations reveals the effect of the mismatch parameter and pulse duration on the diagram of the various energy dependent dynamical regimes. Optimal values of the mismatch and pulse width, which ensure stable performance of the nonlinear switching, are identified. The theoretical predictions are in agreement with experimental findings.
KW - All-optical switching
KW - Asymmetric coupler
KW - Mismatched dual-core optical fibers
KW - Nonlinear fiber optics
KW - Soft glass optical fibers
UR - http://www.scopus.com/inward/record.url?scp=85145352587&partnerID=8YFLogxK
U2 - 10.1016/j.chaos.2022.113045
DO - 10.1016/j.chaos.2022.113045
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AN - SCOPUS:85145352587
SN - 0960-0779
VL - 167
JO - Chaos, Solitons and Fractals
JF - Chaos, Solitons and Fractals
M1 - 113045
ER -