EDFA_v1 Class Reference

Linear EDFA model. More...

Inherits unit.

Public Member Functions
function	EDFA_v1 (in param)
	Class constructor. More...
function	traverse (in obj, in in)
	Amplify the signal and add ASE noise. 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
	Number of input arguments.
Property	nOutputs
	Number of output arguments.
Property	gain
	EDFA gain [dB].
Property	NF
	EDFA noise figure [dB].
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

Linear EDFA model.

It amplify the input signal by multiplying the input field by the square root of the specified gain and it adds to it an Amplified Spontaneous Emission (ASE) noise, which power density is determined by the specified noise figure.

The noise power is determined as Noise spectral density * Sampling frequency. For a complex baseband signal the sampling frequency corresponds to the "simulation" bandwidth.

Example:

param.edfa.gain  = 16;
param.edfa.NF    = 5;

s1 = rand(1000,2);
Ein = signal_interface(s1,struct('Fs',10e9,'Fc',193.1e12,'Rs',1e9,'PCol', [pwr(20,{-16,'dBm'}), pwr(25,{-18,'dBm'})]))

edfa = EDFA_v1(param.edfa);

Eout = edfa.traverse(Ein);

References:

• [1] Agrawal, Gowind P.: Fiber-Optic Communication Systems. 3rd : John Wiley & Sons, 2002.
• [2] Essiambre, et al. (2010). Capacity Limits of Optical Fiber Networks.

Author

Molly Piels

Simone Gaiarin

Version

1

Definition at line 37 of file EDFA_v1.m.

Constructor & Destructor Documentation

function EDFA_v1::EDFA_v1

(

in

param

)

Class constructor.

Constructs an object of type EDFA_v1.

Parameters

param.gain	Gain [dB].
param.NF	Noise figure [dB].

Member Function Documentation

function EDFA_v1::traverse ( in  obj, in  in  )

virtual

Amplify the signal and add ASE noise.

Parameters

in	The signal_interface of the signal to be amplified

Return values

out	The signal_interface of the amplified signal with extra ASE noise

Reimplemented from unit.

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

• library/ch/EDFA_v1.m