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Photonic crystal fiber

Posted 29.03.2013, 01:21 GMT-4 RF & Microwave Engineering, Results & Visualization Version 3.5a, Version 4.0, Version 4.0a, Version 4.1, Version 4.2, Version 4.2a, Version 4.3, Version 4.3a, Version 4.3b 9 Replies

Anand N
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I am trying to model a photonic crystal fiber with liquid crystal filled holes..

I am a starter and it would be really helpful if any one can help me regarding the resources from where i can learn the modelling steps and methods...

Thanks
9 Replies Last Post 05.03.2014, 23:05 GMT-5
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Hello Anand N

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Felipe Beltran-Mejia
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Posted: 1 decade ago 30.04.2013, 11:44 GMT-4
Start by simulating the step index fiber (find it at the model gallery).

Then you can start by modifying that model and inserting the air-holes. Finally you can go an insert the liquid crystals.

--
cheers,
Felipe BM
Start by simulating the step index fiber (find it at the model gallery). Then you can start by modifying that model and inserting the air-holes. Finally you can go an insert the liquid crystals. -- cheers, Felipe BM
Anand N
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Posted: 1 decade ago 01.05.2013, 01:40 GMT-4
Thank you Mr. Felipe for your response......

I have tried simple models....
I am having doubt regarding creating PML layers and boundary conditions...
Is creating a PML necessary thing?
I heard from a friend that it is enough to keep 'scattering boundary conditions' options instead of PML.
Thank you Mr. Felipe for your response...... I have tried simple models.... I am having doubt regarding creating PML layers and boundary conditions... Is creating a PML necessary thing? I heard from a friend that it is enough to keep 'scattering boundary conditions' options instead of PML.
Alexander Kuznetsov
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Posted: 1 decade ago 01.05.2013, 13:26 GMT-4
you can always start with 'scattering boundary conditions'. But generally, PMLs perform better.
you can always start with 'scattering boundary conditions'. But generally, PMLs perform better.
Felipe Beltran-Mejia
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Posted: 1 decade ago 02.05.2013, 08:18 GMT-4
It depends on how important are the radiation losses for you.

In case you do not need to know precisely the radiation losses, then I will go with the Comsol's PML just to prevent spurious reflections to have an influence on your results.

--
cheers,
Felipe BM
It depends on how important are the radiation losses for you. In case you do not need to know precisely the radiation losses, then I will go with the Comsol's PML just to prevent spurious reflections to have an influence on your results. -- cheers, Felipe BM
Anand N
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Posted: 1 decade ago 03.05.2013, 21:30 GMT-4
Thank you Mr. Felipe ...
I will proceed with the PML layer itself :)
Thank you Mr. Felipe ... I will proceed with the PML layer itself :)
Mr. ARM
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Posted: 1 decade ago 25.06.2013, 23:16 GMT-4
Hi Anand, can you help me to find the effective index of PCF? how to plot the effective index against wavelength

thanks!
Hi Anand, can you help me to find the effective index of PCF? how to plot the effective index against wavelength thanks!
Anand N
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Posted: 1 decade ago 09.12.2013, 09:29 GMT-5
Hi

You can obtain the effective index equation from the top of the profile obtained after simulation.
Hi You can obtain the effective index equation from the top of the profile obtained after simulation.
Uday Bangavadi Munivenkatappa
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Posted: 1 decade ago 05.03.2014, 13:49 GMT-5
HI anand,
Could you please explain .. how u got the effective index profile. I am completely struck over there. IT would be of great help.


Thanking you,
Uday
HI anand, Could you please explain .. how u got the effective index profile. I am completely struck over there. IT would be of great help. Thanking you, Uday
Anand N
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Posted: 1 decade ago 05.03.2014, 23:05 GMT-5
Hi Uday,

Have you obtained the intensity profile for your model?
If so, you can see your effective index above it. The real part corresponds to the effective index.
It will correspond to the first solver parameter.
You can see the other values too from the post processing menu.

Regards,
Anand

P.S. I am still a beginner in COMSOL modelling.
Hi Uday, Have you obtained the intensity profile for your model? If so, you can see your effective index above it. The real part corresponds to the effective index. It will correspond to the first solver parameter. You can see the other values too from the post processing menu. Regards, Anand P.S. I am still a beginner in COMSOL modelling.

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