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Need a Help!! Band diagram & extracting eigenfrequency which I solved with Comsol 4.3

Posted 8 mai 2013, 16:41 UTC−4 RF & Microwave Engineering, Acoustics & Vibrations, Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers Version 4.3 2 Replies

Changhee Lee
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I have to plot a Band diagram in 2D Photonic Crystal.
I worked in Eigenfrequency model, which I reached via RF module > Electromagnetic waves, Frequency > Eigenfrequecy.

After using parametric sweep with wave vector k, I got a eigenfrequecy for each value of k.
As I want to plot Band diagram, I need a data such as a spreadsheet which shows eigenfrequency and k. However I cannot find a way to extract the set of eigenfrequencies which I had gotten.

If there are any one who knows the way, Plz teach me T.T


2 Replies Last Post 9 mai 2013, 12:53 UTC−4
Chris Layman
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Posted: 1 decade ago 9 mai 2013, 09:50 UTC−4

I have to plot a Band diagram in 2D Photonic Crystal.
I worked in Eigenfrequency model, which I reached via RF module > Electromagnetic waves, Frequency > Eigenfrequecy.

After using parametric sweep with wave vector k, I got a eigenfrequecy for each value of k.
As I want to plot Band diagram, I need a data such as a spreadsheet which shows eigenfrequency and k. However I cannot find a way to extract the set of eigenfrequencies which I had gotten.

If there are any one who knows the way, Plz teach me T.T


do a point evaluation and select any point of the geometry, for the quantity to evaluate type in 'freq' , click evaluate (chose the appropriate solution from drop down menu so you get all permutations of k and freq). Copy results from the table to excel or matlab and plot them there.


~Chris
[QUOTE] I have to plot a Band diagram in 2D Photonic Crystal. I worked in Eigenfrequency model, which I reached via RF module > Electromagnetic waves, Frequency > Eigenfrequecy. After using parametric sweep with wave vector k, I got a eigenfrequecy for each value of k. As I want to plot Band diagram, I need a data such as a spreadsheet which shows eigenfrequency and k. However I cannot find a way to extract the set of eigenfrequencies which I had gotten. If there are any one who knows the way, Plz teach me T.T [/QUOTE] do a point evaluation and select any point of the geometry, for the quantity to evaluate type in 'freq' , click evaluate (chose the appropriate solution from drop down menu so you get all permutations of k and freq). Copy results from the table to excel or matlab and plot them there. ~Chris
Alireza Bayat
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Posted: 1 decade ago 9 mai 2013, 12:53 UTC−4
Hi

I have used an ODE to evaluate "freq" and a parametric sweep on k to draw the eigenvalues in a 1D plot,

Hi I have used an ODE to evaluate "freq" and a parametric sweep on k to draw the eigenvalues in a 1D plot,

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