# Higher Order Nonlinear Dynamics in AlGaAs Doped Glass Photonic Crystal Fibers at Sub Pico-Joule Energy

## TL;DR

This paper introduces a novel AlGaAs doped glass photonic crystal fiber capable of supporting soliton propagation at ultralow energies due to its high nonlinearity and tailored dispersion, enabling advanced telecommunication applications.

## Contribution

It reports the design of a unique fiber with the highest nonlinear coefficient in AlGaAs doped glass, facilitating ultralow energy soliton propagation and detailed analysis of higher-order soliton dynamics.

## Key findings

- Achieved very high nonlinearity of 25211 W^(-1) km^(-1).
- Demonstrated soliton behavior at sub pico-Joule energies.
- Analyzed effects of higher-order dispersion on soliton dynamics.

## Abstract

In the present paper, a unique semiconductor doped glass photonic crystal fiber has been designed which is suitable for soliton propagation at sub pico-Joule energy. The fiber promises to yield low and uniform anomalous dispersion profile and very large optical nonlinearities 25211 W^(-1) km^(-1) at telecommunication wavelength, thus facilitating soliton formation at ultralow energy. The observed magnitude of nonlinearity is the highest reported ever till date in AlGaAs doped glass. The soliton dynamics has been investigated taking into account of higher-order dispersions and nonlinearities. Propagating solitons breadth and experience large frequency shift, which decreases with the increase in the initial pulse width and increases with the increase in pulse energy. Temporal width of solitons oscillate, the frequency and amplitude of oscillations increase with the increase in the value of pulse energy.

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Source: https://tomesphere.com/paper/1812.04497