CDCompensation_v1 Class Reference

FFT-based chromatic dispersion compensation. More...

Inherits unit.

Public Member Functions
function	CDCompensation_v1 (in params)
	Class constructor. More...
function	traverse (in obj, in in)
	Traverse function. More...
function	cdtransfun (in obj, in omega)
	Calculate CD transfer function. More...
Public Member Functions inherited from unit
function	traverseNode (in obj)
	Set unique ID when creating a unit. More...
function	connectOutput (in obj, in uobj, in unitOutput, in nextUnitInput)
	Specify where signal should go next. More...
function	connectOutputs (in obj, in units, in destInputs)
	Specify where signal should go next. More...
function	writeInputBuffer (in obj, in sig, in inputId)
	write input buffer
function	horzcat (in varargin)
	horizontal concatenation
function	vertcat (in varargin)
	vertical concatenation
function	setparams (in obj, in params, in REQUIRED_PARAMS, in QUIET_PARAMS)
	set parameters More...
function	view (in obj)
	Show interactive GUI through unit_view-class.

Public Attributes
Property	nInputs
Property	nOutputs
Property	L
	System length, km.
Property	D
	Average dispersion parameter, ps/nm/km.
Property	S
	Dispersion slope, ps/nm^2/km.
Property	lambda
	Compensation wavelength, m.
Property	Nfft
	FFT size, Sa.
Public Attributes inherited from unit
Property	inputBuffer
	Buffer for storing inputs as we traverse the graph.
Property	nextNodes
	Children nodes.
Property	destInputs
	Destination inputs in children.
Property	results
	For storing results.
Property	label
Property	draw
	enable/disable plotting
Property	nInputs
	Number of signals traverse expects.
Property	nOutputs
	Number of outputs traverse expects.

Detailed Description

FFT-based chromatic dispersion compensation.

FFT-based chromatic dispersion compensation. Applies dispersion transfer function to signal - reverse signs to compensate (e.g. if the fiber has a dispersion slope of 16.3 ps/nm/km, set obj.D = -16.3).

Author

Robert Borkowski rbor@.nosp@m.foto.nosp@m.nik.d.nosp@m.tu.d.nosp@m.k

Version

1 Technical University of Denmark 17.12.2014

Definition at line 17 of file CDCompensation_v1.m.

Constructor & Destructor Documentation

function CDCompensation_v1::CDCompensation_v1

(

in

params

)

Class constructor.

Class constructor

Example:

CDcomp = CDCompensation_v1(struct('L', 1e3, 'lambda', 1560e-9));

Parameters

param.D	Dispersion parameter (ps/nm/km) (default 17)
param.S	Dispersion slope, ps/nm^2/km (default 0)

Return values

CDCompensation

object

Member Function Documentation

function CDCompensation_v1::cdtransfun	(	in	obj,
		in	omega
	)

Calculate CD transfer function.

Calculate CD transfer function.

Parameters

omega

angular frequencies at which to calculate transfer function

Return values

H	transfer function

function CDCompensation_v1::traverse ( in  obj, in  in  )

virtual

Traverse function.

Applies CD transfer function in the frequency domain to the signal

Parameters

in	Signal to be compensated

Return values

out	compensated signal
results	no results

Reimplemented from unit.

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The documentation for this class was generated from the following file:

• library/rx/DSP/CDCompensation_v1.m