com.net2plan.libraries

Class OpticalImpairmentUtils

java.lang.Object

com.net2plan.libraries.OpticalImpairmentUtils

public class OpticalImpairmentUtils
extends Object

Version:

1.0, November 2017

Author:

Elena Martin-Seoane

Field Summary

Fields

Modifier and Type	Field and Description
static double	constant_c speed of light in m/s
static double	constant_h Plank constant in m^2 kg/sec
static String	stFiber_alpha_dB_per_km
static String	stFiber_alpha1st_dB_per_km_per_THz
static String	stFiber_beta2_ps2_per_km
static String	stFiber_effectiveArea_um2
static String	stFiber_n2Coeff_m2_per_W
static String	stSpectrum_aseNoisePower_W
static String	stSpectrum_bandwidthPerChannel_THz
static String	stSpectrum_nliNoisePowerg_W
static String	stSpectrum_powerPerChannel_W

Method Summary

Modifier and Type	Method and Description
static List<Quadruple<Map<String,double[]>,Double,Map<String,double[]>,Double>>	computeImpairments(List<Quadruple<Double,String,Double,String>> linkElements, Map<String,double[]> spectrumParameters, Map<String,Map<String,Double>> fibersParameters, double oadm_perChannelOutputPower_W, double fiber_PMD_ps_per_sqroot_km, double edfa_PMD, double pc_PMD, double oadm_muxDemuxPMD_ps, double oadm_preAmplifierPMD_ps, double oadm_boosterPMD_ps, double[] frequenciesPerChannel_THz, double centralFrequency_THz, double tp_inputPowerSensitivityMin_dBm, double tp_inputPowerSensitivityMax_dBm) Computes OSNRs and power per channel with the GN formula and PMD according to Net2Plan calculations.
static double	dB2linear(double dB) Converts dB value into linear
static double[]	dB2linear(double[] dB) Converts dB array into linear
static Triple<double[],double[],double[]>	getOSNR(Map<String,double[]> spectrum) Computes linear, non-linear and total OSNR from the data of the given spectrum
static double	linear2dB(double num) Converts linear value into dBs
static double[]	linear2dB(double[] nums) Converts linear arrays into dBs

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

constant_c

public static final double constant_c

speed of light in m/s

See Also:

Constant Field Values

constant_h

public static final double constant_h

Plank constant in m^2 kg/sec

See Also:

Constant Field Values

stFiber_alpha_dB_per_km

public static final String stFiber_alpha_dB_per_km

See Also:

Constant Field Values

stFiber_alpha1st_dB_per_km_per_THz

public static final String stFiber_alpha1st_dB_per_km_per_THz

See Also:

Constant Field Values

stFiber_beta2_ps2_per_km

public static final String stFiber_beta2_ps2_per_km

See Also:

Constant Field Values

stFiber_effectiveArea_um2

public static final String stFiber_effectiveArea_um2

See Also:

Constant Field Values

stFiber_n2Coeff_m2_per_W

public static final String stFiber_n2Coeff_m2_per_W

See Also:

Constant Field Values

stSpectrum_aseNoisePower_W

public static final String stSpectrum_aseNoisePower_W

See Also:

Constant Field Values

stSpectrum_bandwidthPerChannel_THz

public static final String stSpectrum_bandwidthPerChannel_THz

See Also:

Constant Field Values

stSpectrum_nliNoisePowerg_W

public static final String stSpectrum_nliNoisePowerg_W

See Also:

Constant Field Values

stSpectrum_powerPerChannel_W

public static final String stSpectrum_powerPerChannel_W

See Also:

Constant Field Values

Method Detail

computeImpairments

public static List<Quadruple<Map<String,double[]>,Double,Map<String,double[]>,Double>> computeImpairments(List<Quadruple<Double,String,Double,String>> linkElements,
                                                                                                          Map<String,double[]> spectrumParameters,
                                                                                                          Map<String,Map<String,Double>> fibersParameters,
                                                                                                          double oadm_perChannelOutputPower_W,
                                                                                                          double fiber_PMD_ps_per_sqroot_km,
                                                                                                          double edfa_PMD,
                                                                                                          double pc_PMD,
                                                                                                          double oadm_muxDemuxPMD_ps,
                                                                                                          double oadm_preAmplifierPMD_ps,
                                                                                                          double oadm_boosterPMD_ps,
                                                                                                          double[] frequenciesPerChannel_THz,
                                                                                                          double centralFrequency_THz,
                                                                                                          double tp_inputPowerSensitivityMin_dBm,
                                                                                                          double tp_inputPowerSensitivityMax_dBm)

Computes OSNRs and power per channel with the GN formula and PMD according to Net2Plan calculations.

Parameters:

linkElements - List of Quadruples where 1st: position (km); 2nd: Type; 3rd: data; 4th: auxData

spectrumParameters - Map with keys stSpectrum_XX

fibersParameters - Map with key fiberType, and value a Map of (stFiber_XXX, paramValue)

oadm_perChannelOutputPower_W - output power for all OADMs (per channel)

fiber_PMD_ps_per_sqroot_km - PMD fiber coefficient

edfa_PMD - edfa PMD coefficient

pc_PMD - PC PMD coefficient

oadm_muxDemuxPMD_ps - mux OADM PMD coefficient

oadm_preAmplifierPMD_ps - pre-amplifier OADM PMD coefficient

oadm_boosterPMD_ps - booster OAMD PMD coefficient

frequenciesPerChannel_THz - array with the frequencies of each channel

centralFrequency_THz - the central frequency of the used spectrum

tp_inputPowerSensitivityMin_dBm - minimum input power of the final transponder

tp_inputPowerSensitivityMax_dBm - maximum input power of the final transponder

Returns:

a list of elements with a Quadruple: 1st element is the power per channel before the element, 2nd, the PMD^2 Net2Plan result before the element, 3rd, the GN-model spectrum parameters after the element, 4th, the PMD^2 Net2Plan result after the element,

dB2linear

public static double dB2linear(double dB)

Converts dB value into linear

Parameters:

dB - value in dB

Returns:

linear value

dB2linear

public static double[] dB2linear(double[] dB)

Converts dB array into linear

Parameters:

dB - array of dB values

Returns:

linear nums

getOSNR

public static Triple<double[],double[],double[]> getOSNR(Map<String,double[]> spectrum)

Computes linear, non-linear and total OSNR from the data of the given spectrum

Parameters:

spectrum - (Map with keys: p_ch, p_ase, p_nli)

Returns:

Triple where 1st: linear OSNR per channel, 2nd: non-linear OSNR per channel, 3rd: total OSNR per channel

linear2dB

public static double linear2dB(double num)

Converts linear value into dBs

Parameters:

num - linear number

Returns:

value in dB

linear2dB

public static double[] linear2dB(double[] nums)

Converts linear arrays into dBs

Parameters:

nums - linear array

Returns:

values in dB