How to design a rectangular step-index optical fiber using Comsol Multiphysics Software?

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How to generate a spherical pressure wave from a source point in COMSOL Multiphysics software?

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Can consider a sinusoidal wave as a Partial discharge acoustic pressure wave?

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The amplitude of frequency in FFT doesn't match time-domain amplitude in COMSOL Multiphysics software?

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Can anyone help with this comsol error? Pleaaaase I need help !!?

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Rajib Biswas

Have a look at the following links.

https://www.comsol.co.in/model/step-index-fiber-145

https://hort.iastate.edu/comsol_optical_waveguide_simulation.pdf

https://www.laserfocusworld.com/.../modeling-multiphysics-software-models-multimat...

Sorokhaibam Nilakanta Meitei

Thank you so much sir, Rajib. Sir, Second link I couldn't open it if you if the pdf file of second please send it.

Alaa Hussein Ali

this site will help you

http://www.comsol.co.in/model/step-index-fiber-145