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help me for pcf modeling

Posted 21.04.2010, 08:17 GMT-4 3 Replies

ali younesi

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hi

i 'm doing a project about pcf(photonic crystal fiber), i choose the 2D pependicular hybrid-mode wave and select mode analysis, i set the subdomain & boundary & in properties i set the "specify eigen values using" for effective mode index & ... & generate mesh for that .
but i don't know what's the setting for finding effective mode index in solver parameters ? , i set it to a greater value of core index, but the result isn't good and don't show the effective mode(HE11 mode) and effective index
please help me for this problem

thanks a lot

3 Replies Last Post 21.04.2010, 18:04 GMT-4

Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

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Posted: 1 decade ago

Hi

I beleive its what is already discussed a couple of times on the forum, try a search (just left for the [Go] just above) try Effective index, or mode index,

there you will find discussion susch as

www.comsol.com/community/forums/general/thread/3034/
Have fun Comsoling
Ivar

ali younesi

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Posted: 1 decade ago

hi dear,

thank you very much for your answer,but can i specify one propagation mode (for example HE11) in the femlab?
i want "neff" for basic propagation mode in the fiber that propagate maximum of power in the fiber & i don't want the maximum of the "neff"
but the femlab give me the maximum of the "neff", please help me for my problem.

thanks&bye

ali younesi

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Posted: 1 decade ago

hi dear,

i perusal this paper:

www.medwelljournals.com/fulltext/ajit/2008/344-349.pdf

& i want to regenerate its results

thank you&bye

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