| waveguide_data | struct with fields described in waveguide_data table | Data required for modeling the waveguide sections. |
elec_eq_ckt_data |
struct with fields described in elec_eq_ckt_data | Data required for modeling the electrical equivalent circuit for accurate electro-optic simulations. For more information on the electrical equivalent circuit, see phase_shifter_electrical - CML Compiler Model. |
elec_eq_ckt_data
In order to model the electrical phase shifter, a lumped model may be used. The RC data within this section is used to construct an electrical equivalent circuit which captures the bandwidth and loading effects of the electrical phase shifters when the compact model is simulated using Cadence Spectre. When the compact model is used standalone in INTERCONNECT, the electrical bandwidth is captured by an INTERCONNECT electrical low pass filter, which has a 3dB cut-off frequency calculated based on the RC data described in this section. The RC parameter data is optional, and if not provided, it will be automatically back-calculated based on device’s electrical_bandwidth_data by CML Compiler.
For more information on the equivalent circuit, see Electrical Equivalent Circuit in photonic model page.
| Variable | Type | Description |
|---|---|---|
| Cj | Matrix |
N x 2 matrix containing the junction capacitance (F/m) of the electrical phase shifter, where N is the number of bias points, and the columns contain:
Notes:
|
| Rs | Matrix | Series resistance (Ohm) of the phase shifter. A Tx1 matrix containing Rs values at the corresponding temperature points used in IV_data. |
| Rp |
Number
|
Parasitic resistance (Ohm) of the metal pad. |
| Cp | Parasitic capacitance (F) between metal pads. | |
| Is | Matrix | Reverse saturation current of the diode (A). A Tx1 matrix containing Is values at the corresponding temperature points used in IV_data. |
| Ndiode | Number | Diode ideality factor. |
waveguide_data
Note: The fields are only required for waveguide sections with non-zero length. See Internal Model Diagram in photonic model page for a diagram showing the role of each section.
| Field | Type | Description |
|---|---|---|
wavelength |
number | Center wavelength (m) of the band for which the mode properties are provided. |
temperature |
number | Temperature (K) for which the mode properties below are provided. |
waveguide_passive_right |
struct with fields described in table below
|
Mode properties for modeling the right and left passive waveguide sections |
waveguide_passive_left | ||
waveguide_transition_right |
Mode properties for modeling the right and left passive to electrically active transition waveguide sections | |
waveguide_transition_left | ||
waveguide_phase_shifter |
Mode properties for modeling the electrical phase shifter waveguide section at 0 V bias |