Struct SplitStep 

pub struct SplitStep { /* private fields */ }

The Steps of one span in double precision.

Implementations

impl SplitStep

pub fn new(medium: &Medium, steps: Steps, n: usize, fs: f64) -> SplitStep

The steps through medium for a block of n samples at fs (no plan for an empty block: the steps then leave it empty).

pub fn steps(&self) -> Steps

The steps.

pub fn run(&self, e: &mut [C64])

Propagate e (√W, time domain) through the steps, in place.

Panics

If e has another length than the block of SplitStep::new.

pub fn run_dual(&self, x: &mut [C64], y: &mut [C64])

The steps for the Manakov equation: both polarisations (√W, time domain, equal lengths) in place, with the nonlinear phase $\frac{8}{9} \gamma (|A_{x}|^{2} + |A_{y}|^{2}) h_{\mathrm{NL}}$ at the middle of every step (the back-propagation of a dual-polarisation link).

Panics

If the polarisations have different lengths, or another length than the block of SplitStep::new.

pub fn run_with_gain(&self, e: &mut [C64], gain: FieldGain<'_>)

SplitStep::run with a distributed gain: before the nonlinear phase and after it, every half step also multiplies the spectrum by gain(z_0, z_1, g), the gain of the field at every frequency (FFT order) from $z_{0}$ to $z_{1}$ (km, from the start of the steps). The medium then carries no attenuation: gain holds the loss as well (the power profile of a Raman-pumped span, comnum_channel::optical::raman). As in SplitStep::run, the field stays in the frequency domain from the end of a step to the start of the next: two FFTs per step.

Panics

If e has another length than the block of SplitStep::new.

Trait Implementations

impl Clone for SplitStep

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SplitStep

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.