setup.impulse_model = gnlse.SechEnvelope(power, tfwhm)
# Simulation
###########################################################################
# Type of dyspersion operator: build from Taylor expansion
setup.dispersion = gnlse.DispersionFiberFromTaylor(loss, betas)
solver = gnlse.GNLSE(setup)
solution = solver.run()
# Visualization
###########################################################################
plt.figure(figsize=(10, 8))
plt.subplot(2, 2, 1)
plt.title("Results for Taylor expansion")
gnlse.plot_wavelength_vs_distance(solution, WL_range=[400, 1400])
plt.subplot(2, 2, 3)
gnlse.plot_delay_vs_distance(solution, time_range=[-.5, 5])
# read mat file for neffs
mat = gnlse.read_mat('../data/neff_pcf.mat')
# neffs
neff = mat['neff'][:, 1]
# wavelengths in nm
lambdas = mat['neff'][:, 0] * 1e9
# Type of dyspersion operator: build from interpolation of given neffs
setup.dispersion = gnlse.DispersionFiberFromInterpolation(
loss, neff, lambdas, setup.wavelength)
solver = gnlse.GNLSE(setup)
solution = solver.run()
# Input pulse: peak power [W]
power = 1 / (LNL * setup.nonlinearity)
# Fiber length [m]
setup.fiber_length = 10 * LD
# Type of pulse: gaussian
setup.pulse_model = gnlse.GaussianEnvelope(power, tFWHM)
# Loss coefficient [dB/m]
loss = 0
# Type of dyspersion operator: build from Taylor expansion
setup.dispersion_model = gnlse.DispersionFiberFromTaylor(loss, betas)
# Type of Ramman scattering function: None (default)
# Selftepening: not accounted
setup.self_steepening = False
# Simulation
###########################################################################
solver = gnlse.gnlse.GNLSE(setup)
solution = solver.run()
# Visualization
###########################################################################
plt.figure(figsize=(15, 7))
plt.subplot(1, 2, 1)
gnlse.plot_wavelength_vs_distance(solution, WL_range=[780, 900])
plt.subplot(1, 2, 2)
gnlse.plot_delay_vs_distance(solution, time_range=[-.5, .5])
plt.show()