[SOLVED] what is your idea about fundamental mode frequency and my simulation result?

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ghasem_008

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Hi.
I have simulated a photonic crystal fiber and get following diagram for electric field on the axis fiber in frequency domain.
what is your idea about:
1. frequency resolution and noise in my FFT ?
2. fundamental mode frequency (and it's value)?
3 Each peak in this figure is corresponding to one mode in my result?
I have attached my input spectrum and electric field in frequency domain (input pulse is a modulated gaussian).
 

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  • input spectrum.png
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hello, i worke on photonic crystal cavities, and i wrote my fdtd code matlap .i compute the field distribution on the cavity, I find difficulty to calculate the transmision by the fast Fourier transformed (fft)
help me please
 

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