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modeling evanescent wave

Posted Aug 30, 2012, 1:47 p.m. EDT RF & Microwave Engineering Version 4.2a 4 Replies

Hangqi Zhao
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Hi all,
How to generate or simulate evanescent wave in COMSOL? can total internal reflection work? There seems to be rare examples in this field and expect for any ideas from you.
4 Replies Last Post Apr 4, 2013, 2:37 p.m. EDT
Alexander Kuznetsov
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Posted: 1 decade ago Aug 30, 2012, 7:25 p.m. EDT
Yes, evanescent waves can be simulated using total internal reflection. Build a model with thin dielectric slab in air, launch plane wave at oblique angle, and watch the evanescent waves to propagate through the slab.
Yes, evanescent waves can be simulated using total internal reflection. Build a model with thin dielectric slab in air, launch plane wave at oblique angle, and watch the evanescent waves to propagate through the slab.
Kaushalkumar Bhavsar
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Posted: 1 decade ago Dec 2, 2012, 10:48 a.m. EST
Hi,

I am also trying for the same...

But yet not able to figure out....

If you have any idea just let me know

Hi, I am also trying for the same... But yet not able to figure out.... If you have any idea just let me know
Yan Guan
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Posted: 1 decade ago Mar 29, 2013, 8:38 p.m. EDT
Hi,

For the evanescent waves simulation. How to launch the plane wave? How to set the boundary conditions (periodic and scattering boundary conditions)? Thank you very much for your help!

Best,
Yan
Hi, For the evanescent waves simulation. How to launch the plane wave? How to set the boundary conditions (periodic and scattering boundary conditions)? Thank you very much for your help! Best, Yan
Constantinos Tsangarides
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Posted: 1 decade ago Apr 4, 2013, 2:37 p.m. EDT
If somebody found out how to shine planar waves at an angle and being polarised in one direction please let me know!

Do you use Ports or Scattered Boundary Condition?
If somebody found out how to shine planar waves at an angle and being polarised in one direction please let me know! Do you use Ports or Scattered Boundary Condition?

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