Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
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.
Frequency domain propagation, loss, refelcetion
Posted 2014年1月10日 GMT-5 08:37 Version 4.3b 0 Replies
Please login with a confirmed email address before reporting spam
I am calculating the transmitted power loss for one 2-D waveguide, use intop2(emw.nPoav)/intop1(emw.nPoav)
intop2 is the integration of output bounday.
intop1 is the integration of input bounday.
but if the waveguide invloved some refletion, it will of course influences the value of intop1(emw.nPoav), do we have some ways to detected along the wave propagation direction (only +z not -z),
e.g, for a fiber bragg grating, how to use comsol to make propagation smulation about the transmission loss at the Bragg wavelength? how can we neglect the reflection effect to the input facet?
second question is that, in order to kill all the refletion effect at the output bounday interface (scattering bounday only can absorbing the wave perpendicular to the bounday??), can we add PML at the output bounday? just set the output bounday beforethe PML..Is that possible?
Reply from anyone of you are very welcomed! thanks!!!
best regrads,
hualong
Hello Logan Bao
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.