Dear Szymon, Just glancing at your graph, those oscillations resemble very much the oscillations in one of the Meep examples:
http://ab-initio.mit.edu/wiki/index.php/Meep_Tutorial/Band_diagram%2C_resonant_modes%2C_and_transmission_in_a_holey_waveguide The explanation they give is: "There is also some high-frequency oscillation visible at the left of the plot, which is a numerical artifact due to our pulse not having enough amplitude in that range." It looks like you are seeing a similar thing. George Szymon Lis wrote: > Hi Meep users, > > My problem in meep are strange oscillation in reflection spectrum form cavity > waveguide. The reflection graph are attached. That is my the best result. > When I try different resolution, or/and various distances between source and > phc oscillation are bigger. Even reach 1.4 reflection!. I don't know what > exactly it is? Numerical error? How to avoid it? > > Thank you. > Szymon > > > ___________ > Szymon Lis > Photonics Group > Faculty of Microsystem Electronics and Photonics > Wroclaw University of Technology > ul. Janiszewskiego 11/17, 50-372 Wroclaw, POLAND > > Tel. +48 (71) 320 3735 > Fax. +48 (71) 328 3504 > > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------ > > _______________________________________________ > meep-discuss mailing list > [email protected] > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss _______________________________________________ meep-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
