1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/* Copyright (c) 2012 Massachusetts Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "model/optical_graph/OpticalWavelength.h"
#include "model/optical_graph/OpticalNode.h"
#include "model/optical_graph/OpticalLaser.h"
#include "model/optical_graph/OpticalModulator.h"
#include "model/optical_graph/OpticalFilter.h"
#include "model/optical_graph/OpticalDetector.h"
#include "model/optical_graph/OpticalWavelength.h"
#include <list>
#include <cmath>
namespace DSENT
{
using std::list;
using std::min;
OpticalWavelength::OpticalWavelength(const String& instance_name_, const WavelengthGroup& wavelengths_)
: m_instance_name_(instance_name_), m_wavelengths_(wavelengths_)
{
m_data_paths_ = new vector<OpticalDataPath>;
}
OpticalWavelength::~OpticalWavelength()
{
delete m_data_paths_;
}
const String& OpticalWavelength::getInstanceName() const
{
return m_instance_name_;
}
void OpticalWavelength::addDataPath(OpticalLaser* laser_, OpticalModulator* modulator_, OpticalDetector* detector_, double loss_)
{
// Expected wavelengths check
ASSERT(laser_->isExpected(getWavelengths()), "[Error] " + getInstanceName() +
" -> " + laser_->getInstanceName() + " is not expecting the set wavelengths!");
ASSERT(modulator_->isExpected(getWavelengths()), "[Error] " + getInstanceName() +
" -> " + modulator_->getInstanceName() + " is not expecting the set wavelengths!");
ASSERT(detector_->isExpected(getWavelengths()), "[Error] " + getInstanceName() +
" -> " + detector_->getInstanceName() + " is not expecting the set wavelengths!");
// Check to see if the modulator and laser already have a data path entry
bool entry_exists = false;
for (unsigned int i = 0; i < m_data_paths_->size(); ++i)
{
OpticalDataPath& current = m_data_paths_->at(i);
bool current_laser = current.laser == laser_;
bool current_modulator = current.modulator == modulator_;
ASSERT((current_modulator && current_laser) || !current_modulator, "[Error] " +
getInstanceName() + " -> Modulator is the same, but laser is different?");
// If it is already in the table
if (current_modulator)
{
entry_exists = true;
current.detectors.push_back(detector_);
current.losses.push_back(loss_);
}
}
// If it wasn't found, add the entry
if (!entry_exists)
m_data_paths_->push_back(OpticalDataPath(laser_, modulator_, detector_, loss_));
return;
}
const vector<OpticalDataPath>* OpticalWavelength::getDataPaths() const
{
return (const vector<OpticalDataPath>*) m_data_paths_;
}
WavelengthGroup OpticalWavelength::getWavelengths() const
{
return m_wavelengths_;
}
double OpticalWavelength::getLaserPower(unsigned int number_detectors_) const
{
ASSERT(number_detectors_ > 0, "[Error] " + getInstanceName() +
" -> Number of detectors must be non-zero!");
// Find the number of actual wavelengths
int number_wavelengths = getWavelengths().second - getWavelengths().first + 1;
// Laser power sum
double laser_power_sum = 0;
// Loop through all data paths
for (unsigned int i = 0; i < getDataPaths()->size(); ++i)
{
// Get the current data_path
const OpticalDataPath& current_path = getDataPaths()->at(i);
// Create data structure holding the worstcase detectors
list<double>* detectors = new list<double>();
// Get the extinction ratio of the modulator
double ER_dB = current_path.modulator->getExtinctionRatio();
// Get the insertion loss of the modulator
double IR_dB = current_path.modulator->getInsertionLoss();
// Walk through all detectors in a data path
for (unsigned int j = 0; j < current_path.detectors.size(); ++j)
{
// Convert sensitivity, extinction ratio, and path loss to a required laser power
double current_laser_power = current_path.detectors[j]->getSensitivity(ER_dB) *
std::pow(10.0, (current_path.losses[j] + IR_dB) / 10.0) *
1.0 / (1.0 - pow(10, -ER_dB / 10));
// Add the laser power
detectors->push_back(current_laser_power);
}
// Cap the number of detectors
number_detectors_ = std::min(number_detectors_, (unsigned int) current_path.detectors.size());
// Sort the detectors list in ascending order, only necessary if the number
// of detectors is < total number of detectors
if (number_detectors_ < detectors->size())
detectors->sort();
// Sum up the laser power from the worst-case detectors
list<double>::reverse_iterator iter = detectors->rbegin();
for (unsigned int j = 0; j < number_detectors_; ++j)
{
laser_power_sum += (*iter) / current_path.laser->getEfficiency();
++iter;
}
delete detectors;
}
return number_wavelengths * laser_power_sum;
}
} // namespace DSENT
|
