Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Off-axis propagation in a Photonic Crystal Fibre
Posted 29 dic 2009, 10:57 GMT-5 0 Replies
Please login with a confirmed email address before reporting spam
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
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.