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#include <ctime>
#include <iomanip>
#include <tb/freqsweep_tb.h>
#include <cstdlib>
#include <unistd.h>
#include "time_monitor.h"
#include "general_utils.h"
/* ----------------------------------------------------------------------------- *
This testbench is called freqsweep because it is capable of this
type of simulation, but it is also possible to set it as a time-domain
simulation depending on the mode chosen when calling SPECS. Example:
specs -t ac_add_drop -m fd -> will perform the frequency sweep
specs -t ac_add_drop -m td -> will perform the time domain simulation
/ ----------------------------------------------------------------------------- */
void freqsweep_tb::run_1()
{
if (specsGlobalConfig.simulation_mode == OpticalOutputPortMode::FREQUENCY_DOMAIN)
{
auto lambda_center = 1550.3e-9;
auto lambda_span = 1e-9;
auto dlambda = 0.002e-9;
auto lambda_min = lambda_center - lambda_span/2;
auto lambda_max = lambda_center + lambda_span/2;
// lambda_min = 1550.250e-9;
// lambda_max = 1550.303e-9;
//wait(lambda_min * 1e9, SC_SEC);
wait(SC_ZERO_TIME);
cout << "----------------------------" <<endl;
cout << "Starting sweep" << endl;
for (auto lambda = lambda_min; lambda < lambda_max + dlambda; lambda += dlambda)
{
cout << setprecision(7) << lambda * 1e9 << "nm" << endl;
IN->write(OpticalSignal(1, lambda));
wait(dlambda, SC_SEC);
}
} else {
for (int i = 0; i < 1; ++i)
{
auto lambda = 1550.302e-9;
IN->write(OpticalSignal(1,lambda));
wait(1, SC_NS);
IN->write(OpticalSignal(0, lambda));
wait(1, SC_NS);
}
}
while (true) { wait(); }
}
void freqsweep_tb::monitor()
{
unsigned int event_counter = 0;
unsigned int success_counter = 0;
const unsigned int test_number = 3;
while(true)
{
wait();
continue;
}
}
void freqsweep_tb_run_add_drop()
{
specsGlobalConfig.applyEngineResolution();
//specsGlobalConfig.oop_configs[0]->m_mode = OpticalOutputPortMode::EVENT_DRIVEN;
//specsGlobalConfig.oop_configs[0]->m_mode = OpticalOutputPortMode::FREQUENCY_DOMAIN;
// First test for the LBR paper to DAC
// Single ring resonator, compare the response to theoretical
// Also compare time of simulation wrt photontorch for same ring.
// Characteristics:
// Add-drop ring
// Internal wg length (cm):
// Internal wg loss (dB/cm):
// Internal wg neff:
// Internal wg ng:
// DC ratio : 0.15 cross, 0.85 through
// DC coupling loss (dB) : 0
// Total length for resonance: lambda/2neff
double neff = 1.0;
double loss_db_cm = 1.0;
double coupling_through = 0.85;
spx::oa_signal_type IN, T_OUT, X_OUT, X_TERM;
spx::oa_signal_type INNER_RING[4];
freqsweep_tb tb1("tb1");
tb1.IN(IN);
tb1.OUT(X_OUT);
DirectionalCoupler dc1("dc1", coupling_through, 0);
dc1.p_in1(INNER_RING[0]);
dc1.p_out1(INNER_RING[1]);
dc1.p_in2(IN);
dc1.p_out2(T_OUT);
Waveguide wg1("wg1", 100.0*1550.0e-6/(2*neff), loss_db_cm, neff, neff);
wg1.p_in(INNER_RING[1]);
wg1.p_out(INNER_RING[2]);
Waveguide wg2("wg2", 100.0*1550.0e-6/(2*neff), loss_db_cm, neff, neff);
wg2.p_in(INNER_RING[3]);
wg2.p_out(INNER_RING[0]);
DirectionalCoupler dc2("dc2", coupling_through, 0);
dc2.p_in1(X_TERM);
dc2.p_out1(X_OUT);
dc2.p_in2(INNER_RING[2]);
dc2.p_out2(INNER_RING[3]);
Probe pthrough("ptrough");
pthrough.p_in(T_OUT);
Probe pcross("pcross");
pcross.p_in(X_OUT);
// Open Trace file
std::string trace_filename = "traces/";
trace_filename += "freqsweep_tb";
specsGlobalConfig.trace_filename = trace_filename;
// Apply SPECS options specific to the testbench
// could have forced frequency domain like this, but taking command line input instead
// specsGlobalConfig.simulation_mode = OpticalOutputPortMode::FREQUENCY_DOMAIN;
specsGlobalConfig.trace_all_optical_nets = 0;
// Run SPECS pre-simulation code
specsGlobalConfig.prepareSimulation();
// Start simulation
sc_start();
std::cout << std::endl << std::endl;
std::cout << ".vcd trace file: " << specsGlobalConfig.trace_filename << std::endl;
sc_close_vcd_trace_file(specsGlobalConfig.default_trace_file);
}
// void freqsweep_tb_run_crow()
// {
// if (specsGlobalConfig.oop_configs[0]->m_mode == OpticalOutputPortMode::FREQUENCY_DOMAIN)
// specsGlobalConfig.engine_timescale = SPECSConfig::ONE_FS;
// specsGlobalConfig.applyEngineResolution();
// sc_signal<OpticalSignal> IN("IN"), T_OUT("T_OUT"), X_OUT("X_OUT"), ADD("ADD");
// freqsweep_tb tb1("tb1");
// tb1.IN(IN);
// tb1.IN(IN);
// tb1.OUT(T_OUT);
// // pid_t pid = fork();
// CROW *pc;
// // if(pid)
// pc = new CROW("crow", nrings);
// // else
// // pc = new CROW("crow", 5);
// pc->p_in(IN);
// pc->p_add(ADD);
// pc->p_out_t(T_OUT);
// pc->p_out_d(X_OUT);
// Probe pthrough("ptrough");
// pthrough.p_in(T_OUT);
// //
// Probe pcross("pcross");
// pcross.p_in(X_OUT);
// // shared_ptr<TimeMonitor> tm;
// // if (specsGlobalConfig.oop_configs[0]->m_mode == OpticalOutputPortMode::FREQUENCY_DOMAIN)
// // tm = make_shared<TimeMonitor>("TM", 0, 0.01);
// // else
// // tm = make_shared<TimeMonitor>("TM", 1e-14, 0.5);
// // // Open Trace file
// // sc_trace_file *Tf;
// // std::time_t now = std::time(nullptr);
// // char mbstr[100];
// // std::strftime(mbstr, sizeof(mbstr), "%F-%H-%M-%S-", std::localtime(&now));
// //
// // std::string trace_filename = "traces/";
// // //trace_filename += mbstr;
// // trace_filename += "freqsweep_tb";
// // auto engineTime = std::pow(10, 15+specsGlobalConfig.engine_timescale);
// // Tf = sc_create_vcd_trace_file(trace_filename.c_str());
// // ((sc_trace_file *)Tf)->set_time_unit(engineTime, SC_FS);
// // sc_trace(Tf, IN, "IN");
// // sc_trace(Tf, X_OUT, "X_OUT");
// // sc_trace(Tf, T_OUT, "T_OUT");
// if (specsGlobalConfig.trace_filename.empty())
// specsGlobalConfig.trace_filename = "traces/crow_tb";
// // Start simulation
// specsGlobalConfig.prepareSimulation();
// sc_start(); // run until sc_stop()
// std::cout << std::endl << std::endl;
// std::cout << ".vcd trace file: " << specsGlobalConfig.trace_filename << std::endl;
// sc_close_vcd_trace_file(specsGlobalConfig.default_trace_file);
// }
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