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6 Replies
Last post: May 11, 2011 1:10pm UTC
February 4, 2010 1:13pm UTC
Effective index
Hello,
I try to calculate the effective index of photonic crystal fiber. So for comsol I know only that I can set a single value of wavelength.
Is it possible with comsol to define a range of wavelengths (with to define its step ) in order to calculate the effective index?
Thanks in advance,
Ilyes
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February 6, 2010 10:15am UTC in response to Ilyes Abdelaziz
Re: Effective index
Hi
If you operate in the "parametric solver" mode, you can define your "parameter" value as the frequency variable (or a value that drives the frequency though an expression)
Then you can scan over frequency or optical wavelength
Good luck
Ivar
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March 11, 2010 8:32pm UTC in response to Ivar Kjelberg
Re: Effective index
Hi!
What should I put in the "Global variable to evaluate" dialog box in order to get the effective refractive index as an output? I cannot find the name of the variable...
thanks a lot!
Francois
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March 12, 2010 6:44am UTC in response to Parsy Francois
Re: Effective index
Hi
is it the "effective mode index" neff ? you are looking for
in which case try an indexed search on the rfug.pdf doc
good luck
Ivar
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August 20, 2010 10:07am UTC in response to Ivar Kjelberg
Re: Effective index
hi dr
in photonic crystal and comsol v4, how can i plot dispersion?
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May 8, 2011 1:11pm UTC in response to mojtaba sadeghi
Re: Effective index
Hello Ivar
Plz tell us how we can calculate dispersion using version 4.10??
Thanking you
Regards
Anwar
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May 11, 2011 1:10pm UTC in response to Md. Anwar Hossain
Re: Effective index
Hi,
We didn't get the automation to work. In fact, we noticed that multiple modes showed up for each simulation point. We decided to go through each simulation point manually to choose the expected distribution profile. Many of the generated simulations did not make sense (lots of discontinuities), and we noticed that the generated results were very sensitive to our initial guess on effective refractive index.
I hope this helps.
Regards,
Kevin
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