RP Photonics logo
RP Photonics
Modeling & Design Software
Technical consulting services on lasers, nonlinear optics, fiber optics etc.
Profit from the knowledge and experience of a top expert!
Powerful simulation and design software.
Make computer models in order to get a comprehensive understanding of your devices!
Success comes from understanding – be it in science or in industrial development.
The famous Encyclopedia of Laser Physics and Technology – available online for free!
The ideal place for finding suppliers for many photonics products.
Advertisers: Make sure to have your products displayed here!
powerful tools for efficient laser development and laser science
This page gives you an overview on our software products.
RP Fiber Calculator is a convenient tool for calculations on optical fibers.
RP Fiber Power is an extremely flexible tool for designing and optimizing fiber devices.
RP Resonator is a particularly flexible tool for laser resonator design.
RP ProPulse can simulate the pulse evolution e.g. in mode-locked lasers and sync-pumped OPOs.
RP Coating is a particularly flexible design tool for dielectric multilayer systems.
RP Q-switch can simulate the power evolution in Q-switched lasers.
Most of our software products support a powerful script language, which gives you an extraordinary degree of flexibility.
Here you learn about software license conditions, updates and upgrades, etc.
Competent technical support is a key quality associated with software from RP Photonics.
RP Photonics has distributors in various countries.
The RP Photonics Software News keep you updated on our developments and give the users additional interesting hints.
Here you can make inquiries e.g. concerning technical details, prices and quotations.
en | de

RP Fiber Power – Simulation and Design Software
for Fiber Optics, Amplifiers and Fiber Lasers

Example Case: Higher-order Soliton Pulses

Description of the Model

Here, we simulate the evolution of higher-order soliton pulses in a fiber. The chromatic dispersion is calculated with the mode solver. As there is significant third-order dispersion, the soliton evolution somewhat deviates from that expected for a fiber with only second-order dispersion – particularly if the initial pulse is rather short. The simulation is done with an initial pulse which would correspond to a 4th-order soliton if there were no higher-order dispersion.


Figure 1 shows the evolution of the temporal shape.

higher-order soliton pulse

Figure 1: Temporal profile of the pulse, as it evolves along the fiber. The fiber length is taken to be just one soliton period (92 m).

Figure 2 shows the same as a color diagram. Here, one sees more clearly that the initial pulse is not fully reproduced in the end. This is due to higher-order dispersion of the fiber. For longer pulses, this effect would be less pronounced.

higher-order soliton pulse

Figure 2: Evolution of the temporal pulse profile.

Figure 3 shows the spectral evolution.

higher-order soliton pulse

Figure 3: Evolution of the optical spectrum.

Figure 4 is an animated diagram, showing the evolution of the spectrogram of the pulse.

higher-order soliton pulse

Figure 4: Evolution of the spectrogram of the pulse.

(back to the list of example cases)