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Off-axis propagation in a Photonic Crystal Fibre
Posted 29.12.2009, 10:57 GMT-5 0 Replies
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In another way, simulation of the step index single mode fibre example uses the mode analysis to find how many modes propagate in a fibre core and at which angle (neff_rfwv).
Since quite a while I've been trying to simulate a photonic fibre with hollow core but I could not find a way to proof/confirm that the bandgap for the attached example lies within the wavelengths between 3.2723 um and 3.3806 um. This bandgap was already calculated using transfer matrix by Zhi-Yuan Li and Younan Xia in "Omnidirectional absolute band gaps in two-dimensional photonic crystals" (DOI: 10.1103/PhysRevB.64.153108 (2001)). Of course they simulated only on crystal lattice and I try to simulate the whole fibre. But the question is: is there a way to calculate the attenuation related to wavelength for different modes in a photonic fibre or in a crystal lattice? Moreover, it there a way to restrict the "acceptable" eigenmodes to be the ones that fulfill a certain condition, e.g. most of the power travels within the core?
P.S.: If the file could not be attached, it can be downloaded from:
www.hs-furtwangen.de/~rodrig/fibre.zip.
Hello Alberto Rodrigues
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