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arXiv · 2111.10878

Switching dynamics of femtosecond solitons in parity-time-symmetric coupled optical waveguides

Ambaresh Sahoo·Dipti Kanika Mahato·A. Govindarajan·Amarendra K. Sarma
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Abstract

We report a detailed study on soliton steering dynamics in a parity-time-symmetric directional coupler in the femtosecond domain, which requires incorporation of higher-order perturbative effects such as third-order and fourth-order dispersions, self-steepening, and intrapulse Raman scattering. With a high gain/loss, the combination of all these effects is found to stabilize the soliton pulse evolution in the coupler from the chaotic behavior of unperturbed evolution. This work demonstrates that efficient soliton steering can be achieved at very low critical power and a relatively higher gain/loss even in the femtosecond regime.

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Ambaresh Sahoo, Dipti Kanika Mahato, A. Govindarajan, Amarendra K. Sarma. 2022-10-01. Switching dynamics of femtosecond solitons in parity-time-symmetric coupled optical waveguides. https://doi.org/10.1103/physreva.106.043502

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