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.
Why can't I get the right acoustic displacement field for a phononic band gap fiber in COMSOL
Posted 03.01.2020, 06:43 GMT-5 0 Replies
Please login with a confirmed email address before reporting spam
We mainly investigate the forward Brillouin scattering in photonic crystal fiber. Recently we fabricate a PCF with phononic band gap. And the frequency of the core resoant mode just lies inside the bandgap. We have measured the frequency of the acoustic core mode. And now we try to calculate its acoustic displacement field with COMSOL. And the set the estimited eigen frequency based on our experiment. But we can not get the right eigen acoustic mode. The core area has very small displacement. However the veins near the core connecting the core and the cladding show large displacement. We do not know the reason. Why?
Hello Yang Sigang
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.