Agrawal Solutions | Problems Nonlinear Fiber Optics

It sounds like you’re looking for help with the from Govind Agrawal’s Nonlinear Fiber Optics (likely the 5th or 6th edition). This book is the standard graduate text, and its problems are notoriously math-heavy (involving coupled GNLSE, split-step Fourier, perturbation theory, etc.).

for step in range(Nz): # Nonlinear step (half) A *= exp(1j * gamma * dz/2 * abs(A)**2) # Linear step (full in freq domain) A_f = fft(A) A_f *= exp(1j * (beta2/2 * omega**2 + 1j*alpha/2) * dz) A = ifft(A_f) Problems Nonlinear Fiber Optics Agrawal Solutions

# Nonlinear step (half) A *= exp(1j * gamma * dz/2 * abs(A)**2) It sounds like you’re looking for help with