Source: YouTube

<>

Numerical Modeling of Pulse Propagation in Fibers

Soliton Evolution in Fiber Optics

When a light pulse is launched into a fiber with anomalous chromatic dispersion, it can evolve into a soliton pulse and a spreading background known as a dispersive wave. The percentage of pulse energy that ends up in the soliton is higher when the initial pulse parameters are closer to those of a soliton.

Formation of Dispersive Waves

Dispersive waves can form when a soliton is disturbed, such as by a localized loss in the fiber or a transition into a fiber with modified parameters. In mode-locked lasers, similar effects can occur with quasi-soliton pulses, where disturbances couple the soliton to a dispersive wave.

Effect of Periodic Disturbances

In resonators of mode-locked lasers or fiber lasers, periodically occurring disturbances can lead to the formation of Kelly sidebands. These disturbances can result from changes in pulse energy during each round trip or the use of fibers with different dispersion and nonlinearity within the resonator.

Conclusion

Numerical modeling of pulse propagation in fibers is crucial for understanding the complex dynamics of solitons, dispersive waves, and periodic disturbances in fiber optic systems.

Source: Fosco Connect
Feel free to comment your thoughts.