# How to generate Bessel Gauss signal in optisytem using Matlab?

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Athira T Das on 11 Jan 2023
Answered: Rijuta on 22 Feb 2023 at 9:52
I need to generate input signal of Bessel beam to an electronic circuit designed in Optisytem software by including a Matlab component.
So I am confused about how to input this equation as signal to the electronic circuit.
A=1;
kz=1;
kr=1;
z=0;
r=linspace(1,100);
l=5;
phi=linspace(0,2*pi);
E=A*exp(1i.*kz.*z).*besselj(l,kr.*r).*exp(1i.*l.*phi)
E =
0.0002 + 0.0000i 0.0067 + 0.0022i 0.0346 + 0.0255i 0.0766 + 0.1076i 0.0775 + 0.2494i -0.0057 + 0.3620i -0.1138 + 0.3288i -0.1125 + 0.1478i 0.0453 - 0.0312i 0.2246 - 0.0659i 0.2382 + 0.0076i 0.0690 + 0.0251i -0.1035 - 0.0814i -0.1221 - 0.1835i -0.0348 - 0.1257i -0.0027 + 0.0574i -0.0668 + 0.1747i -0.0980 + 0.1206i 0.0030 - 0.0019i 0.1463 - 0.0380i 0.1633 + 0.0104i 0.0337 + 0.0135i -0.0891 - 0.0748i -0.0856 - 0.1379i -0.0156 - 0.0641i -0.0066 + 0.0835i -0.0598 + 0.1428i -0.0576 + 0.0665i 0.0460 - 0.0276i 0.1397 - 0.0316i 0.1032 + 0.0098i -0.0240 - 0.0105i -0.0960 - 0.0859i -0.0571 - 0.0988i 0.0003 + 0.0015i -0.0125 + 0.1118i -0.0500 + 0.1094i -0.0139 + 0.0151i 0.0830 - 0.0462i 0.1204 - 0.0232i 0.0395 + 0.0050i -0.0692 - 0.0329i -0.0880 - 0.0839i -0.0266 - 0.0497i 0.0101 + 0.0571i -0.0168 + 0.1165i -0.0312 + 0.0629i 0.0277 - 0.0281i 0.0990 - 0.0510i 0.0804 - 0.0129i -0.0211 - 0.0034i -0.0914 - 0.0471i -0.0631 - 0.0641i 0.0018 + 0.0036i 0.0132 + 0.0916i -0.0166 + 0.0944i -0.0058 + 0.0109i 0.0585 - 0.0558i 0.0896 - 0.0427i 0.0272 - 0.0035i -0.0668 - 0.0129i -0.0877 - 0.0488i -0.0279 - 0.0302i 0.0226 + 0.0495i 0.0110 + 0.0985i -0.0109 + 0.0521i 0.0202 - 0.0349i 0.0714 - 0.0639i 0.0582 - 0.0255i -0.0259 + 0.0025i -0.0884 - 0.0200i -0.0617 - 0.0370i 0.0078 + 0.0090i 0.0324 + 0.0773i 0.0062 + 0.0783i -0.0004 + 0.0018i 0.0398 - 0.0641i 0.0637 - 0.0534i 0.0140 - 0.0056i -0.0657 + 0.0042i -0.0831 - 0.0216i -0.0230 - 0.0148i 0.0349 + 0.0429i 0.0309 + 0.0809i 0.0018 + 0.0386i 0.0117 - 0.0424i 0.0474 - 0.0712i 0.0383 - 0.0301i -0.0302 + 0.0110i -0.0827 + 0.0026i -0.0551 - 0.0162i 0.0165 + 0.0114i 0.0474 + 0.0623i 0.0211 + 0.0610i -0.0001 - 0.0079i 0.0215 - 0.0692i 0.0407 - 0.0572i 0.0031 - 0.0023i -0.0620 + 0.0204i -0.0742 + 0.0000i

Rijuta on 22 Feb 2023 at 9:52
Hi Athira,
To input an equation as a signal to an electronic circuit in OptiSystem software using a MATLAB component, you can follow these steps:
• Open OptiSystem software and create a new project.
• Add the electronic circuit you want to simulate to the project.
• Add a MATLAB component to the project by clicking on "Add Component" and selecting "MATLAB Component."
• Double-click on the MATLAB component to open the "MATLAB Component Properties" dialog box.
• In the "MATLAB Component Properties" dialog box, click on the "Script" tab and enter your MATLAB code to generate the Bessel beam signal.
• Click on the "Save" button to save the MATLAB component properties.
• Connect the output of the MATLAB component to the input of the electronic circuit.
• Run the simulation and observe the behaviour of the electronic circuit with the Bessel beam input signal.

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