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3D bandgap analysisof photonic crystal: eigenvalues are wrong
Posted 2010年10月30日 GMT-4 17:28 RF & Microwave Engineering Version 4.3b 2 Replies
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Hi,
I try to work from the 2D model (bandgap analysis of photonic crystal in model library) to the 3D case for a long time .
My model is a simple cubic with a cyclinder inside. I have set floquet periodic boundary conditions in all direction with kx ky kz . I also copy the meshes for the periodic boundaries pairs to avoid divergence due to boundary meshes.
Now the problem is that all the eigenvalues I get for Lamda is zeros(extremely small) for both the real and imagary part. (lamda should be very big for the imagary part!) . If I choose a reference eigenfrequency to calculate the eigenfrequency as the 2D model, no matter which frequency I choose, all the eigenfrequency i get is nearly the same the reference eigenfrequency(thus no gaps in all regime).
Did anyone could kindly give me some suggestions or simply share a successful 3D bandgap analysis example for photonic crystal? thanks a lot in advance! my email is lcs1354@hotmail.com
cs
I try to work from the 2D model (bandgap analysis of photonic crystal in model library) to the 3D case for a long time .
My model is a simple cubic with a cyclinder inside. I have set floquet periodic boundary conditions in all direction with kx ky kz . I also copy the meshes for the periodic boundaries pairs to avoid divergence due to boundary meshes.
Now the problem is that all the eigenvalues I get for Lamda is zeros(extremely small) for both the real and imagary part. (lamda should be very big for the imagary part!) . If I choose a reference eigenfrequency to calculate the eigenfrequency as the 2D model, no matter which frequency I choose, all the eigenfrequency i get is nearly the same the reference eigenfrequency(thus no gaps in all regime).
Did anyone could kindly give me some suggestions or simply share a successful 3D bandgap analysis example for photonic crystal? thanks a lot in advance! my email is lcs1354@hotmail.com
cs
2 Replies Last Post 2014年4月10日 GMT-4 04:29