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#pragma once
#include <specs.h>
#include <spx_module.h>
#include <mesh_col.h>
/* Clements MZI Mesh
The mesh has a total of N(N-1)/2 MZIs, as specified in
Optimal design for universal multiport interferometers by Clements et al. (2016).
Connection guide (above the X is electrical address of phi/theta):
0 3
0__| __ ______ __| __ ______0
\/ 2 \/ 5
1__/\__ __| __ __/\__ __| __1
1 \/ 4 \/
2__| __ __/\__ __| __ __/\__2
\/ \/
3__/\__ ______ __/\__ ______3
*/
class Clements : public spx_module{
public:
vector<unique_ptr<spx::oa_port_in_type>> p_in;
vector<unique_ptr<spx::oa_port_out_type>> p_out;
vector<unique_ptr<sc_in<double>>> p_vphi;
vector<unique_ptr<sc_in<double>>> p_vtheta;
// Member variables
size_t m_N; // represents the number of inputs of the mesh (rows)
// Parameters for the internal MZIs
double m_length_cm;
double m_attenuation_wg_dB_cm;
double m_attenuation_coupler_dB;
double m_attenuation_ps_dB;
double m_neff;
double m_ng;
// Submodules and wires
vector<unique_ptr<spx::oa_signal_type>> m_optical_connect;
vector<unique_ptr<MeshCol>> m_mesh_cols;
// Initialization functions
void init_ports();
void init();
Clements(sc_module_name name, const size_t &N,
const double &length_cm = 1e-2,
const double &attenuation_wg_dB_cm = 0, const double &attenuation_coupler_dB = 0,
const double &attenuation_ps_dB = 0,
const double &neff = 2.2111, const double &ng = 2.2637)
: spx_module(name)
, m_N(N)
, m_length_cm(length_cm)
, m_attenuation_wg_dB_cm(attenuation_wg_dB_cm)
, m_attenuation_coupler_dB(attenuation_coupler_dB)
, m_attenuation_ps_dB(attenuation_ps_dB)
, m_neff(neff)
, m_ng(ng)
{
assert(N > 1);
init_ports();
}
};
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