The model generates Gaussian-distributed optical white noise
Keywords
optical, unidirectional
Ports
| Name | Type |
|---|---|
| output | Optical Signal |
Properties
General Properties
| Name | Default value | Default unit | Range |
|---|---|---|---|
|
name Defines the name of the element. |
Optical Noise Source | - | - |
|
annotate Defines whether or not to display annotations on the schematic editor. |
true | - | [true, false] |
|
enabled Defines whether or not the element is enabled. |
true | - | [true, false] |
|
type Defines the element unique type (read only). |
Optical Noise Source | - | - |
|
description A brief description of the elements functionality. |
The model generates Gaussian-distributed optical white noise | - | - |
|
prefix Defines the element name prefix. |
NOISE | - | - |
|
model Defines the element model name. |
- | - | - |
|
library Defines the element location or source in the library (custom or design kit). |
- | - | - |
|
local path Defines the local path or working folder $LOCAL for the element. |
- | - | - |
|
url An optional URL address pointing to the element online help. |
- | - | - |
Standard Properties
| Name | Default value | Default unit | Range |
|---|---|---|---|
|
frequency Central frequency of operation. |
193.1 |
THz* *std. unit is Hz |
(0, +∞) |
|
power spectral density The output signal power spectral density. |
10e-018 | W/Hz | [0, +∞) |
Waveguide/Mode 1 Properties
| Name | Default value | Default unit | Range |
|---|---|---|---|
|
orthogonal identifier 1 The first identifier used to track an orthogonal mode of an optical waveguide. For most waveguide, two orthogonal identifiers '1' and '2' are available (with the default labels 'TE' and 'TM' respectively). |
1 | - | [1, +∞) |
|
label 1 The label corresponding to the first orthogonal identifier. |
X | - | - |
Waveguide/Mode 2 Properties
| Name | Default value | Default unit | Range |
|---|---|---|---|
|
orthogonal identifier 2 The second identifier used to track an orthogonal mode of an optical waveguide. For most waveguide, two orthogonal identifiers '1' and '2' are available (with the default labels 'TE' and 'TM' respectively). |
2 | - | [1, +∞) |
|
label 2 The label corresponding to the second orthogonal identifier. |
Y | - | - |
Numerical Properties
| Name | Default value | Default unit | Range |
|---|---|---|---|
|
generate noise bins Defines whether to generate noise bins or not. |
false | - | [true, false] |
|
noise bin width Defines the noise bins frequency spacing. |
100 |
GHz* *std. unit is Hz |
(0, +∞) |
|
automatic seed Defines whether or not to automatically create an unique seed value for each instance of this element. The seed will be the same for each simulation run. |
true | - | [true, false] |
|
seed The value of the seed for the random number generator. A value zero recreates an unique seed for each simulation run. |
1 | - | [0, +∞) |
Simulation Properties
| Name | Default value | Default unit | Range |
|---|---|---|---|
|
output signal mode The output signal mode. |
%output signal mode% | - | [sample, block |
|
number of output signals The number of simulation runs, or the number of generated signals. |
%number of output signals% | - | [1, +∞) |
|
sample rate The sample rate of the generated signal. This is typically set by the global properties in the root (top-most) element. |
%sample rate% | Hz | [0, +∞) |
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Implementation Details
The Optical Noise Source generates wide bandwidth Gaussian-distributed white noise. Please see the example file optical_noise_source.icp for more information on this element. The following figure shows the system in the example file:
The standard property "power spectral density" (PSD) defines the strength of the noise that distributed in the frequency domain. The following figures show the waveform and spectrum of the noise with the PSD equals 1e-17 W/Hz and 1e-16 W/Hz, respectively.
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