
80 Optical Fiber Communication Systems with MATLAB
®
and Simulink
®
Models
Field ouput
1
Number of steps
nz
Number of FFT1
Nonlinear threshold
Number of FFT
nt
Max number of
iteration for convergence
of split-step method
Maxiter
Fiber loss
alpha in dB/km
Alpha_indB
Tolerance
(default 1e–5)
Tol
Time step
dt
Terminator 4
Terminator 3
Step size (km)
dz
Real-imag to
complex 9
Real-imag to
complex 8
Real-imag to
complex 7
Real-imag to
complex 6
Real-imag to
complex 5
Real-imag to
complex 4
Real-imag to
complex 3
Real-imag to
complex 2
Real-imag to
complex 1
Real-imag to
complex
Propagation constants
[beta 0 beta 1 beta 2 beta 3..]
Betap
Probe 1
Ts:[0 0], F:0
Probe
Ts:[0 0], F:0
Nonlinear coeff
gamma ...