Hi Waldemar,
If you post your scheme file, we can have a look at it.
Best regards,
Milan
-Original Message-
From: meep-discuss-boun...@ab-initio.mit.edu
[mailto:meep-discuss-boun...@ab-initio.mit.edu] On Behalf Of Waldemar
Sent: woensdag 25 mei 2011 12:58
To: meep-discuss@ab-initio.mit
Hi Badar,
I have tried this as well in the past, but I would just redo the fit if I were
you...much easier...
You can always use the parameters you have as an initial guess.
I have posted something on the forum some time ago, about how you can verify
your fit in MEEP.
Best regards,
Milan
From
Did you set the correct phase for symmetry? Look at the manual...
As a starter you could try a Hz source with phase -1 for the symmetry plane...
Milan
From: meep-discuss-boun...@ab-initio.mit.edu
[mailto:meep-discuss-boun...@ab-initio.mit.edu] On Behalf Of qwer1304
Sent: dinsdag 22 februari 2011
Hi Paolo,
It’s still not completely clear to me, but I’m gonna take a gamble
.
First of all, see my first email (with link to paper). What I think you’re
calculating is the spontaneous emission enhancement factor.
By putting a source inside a resonant cavity, you limit the number of modes to
whi
otti [mailto:bnm...@yahoo.it]
Sent: dinsdag 18 januari 2011 10:19
To: Marell, M.J.H.
Subject: Re: [Meep-discuss] normalization
Dear Marell,
thank you for your response.
Your suggestion it is not really clear to me: the predefined flux region should
perform the same job you are suggesting me, isn&
Hi Paolo,
Your simulation looks similar to the technique used for calculating the
emission enhancement of an emitter inside a cavity (see: Hwang, Phys. Rev. B,
vol 60, 1999 ).
I’m not sure what the desired result of your experiment is.
If it is to get the resonant frequency and Q-factor…use harm
Hi everybody,
I was wondering if anybody managed to get some experience with the frequency
domain solver in MEEP.
I succeeded in getting my simulations up and running, but so far they all ended
in "CONVERGENCE FAILLURE".
I don't know if there's any relevance to my problem, but if I output my fi
Dear Kan,
You can still consider your waveguide as an infinite repetition of
unit-cells/slices, even although you don't see any periodic variation. I
believe this is called translational symmetry (see "Molding the flow of light,
chap 3, page 30).
So you can still use this technique to obtain a
I'm pretty sure you'd have to excite your structure with an Hz source to see a
surface effect.
Milan
From: Cícero Julião [mailto:juliaojun...@gmail.com]
Sent: maandag 6 december 2010 15:00
To: Marell, M.J.H.
Subject: Re: [Meep-discuss] Using silver
Yes, 'convert ez-*.png ef
Did you check the individual PNG files?
If they are OK, I wouldn't worry too much.
And what did you use to convert the PNG files to GIF? 'convert ez-*.png
efield.gif'
From: Cícero Julião [mailto:juliaojun...@gmail.com]
Sent: maandag 6 december 2010 14:43
To: Marell, M.J.H.
Sub
I can't reproduce the effect, I only see a field left of the cylinder.
Can you post a screenshot or the animated GIF? What version of MEEP are you
using?
Milan
From: meep-discuss-boun...@ab-initio.mit.edu
[mailto:meep-discuss-boun...@ab-initio.mit.edu] On Behalf Of Cícero Julião
Sent: maandag 6
If I’m not mistaking , this only works for dispersive media of which the real
part is positive, because for negative epsilon you just get exponential decay
There is way to verify your material:
http://www.mail-archive.com/meep-discuss@ab-initio.mit.edu/msg03527.html
Best regards,
Milan
From
Hi everybody,
I posted this question some time ago, but the issue has become a bit more
urgent since I'm now constantly running out of memory when I try to calculate
|E|^2 from the individual components in Matlab.
Can anybody help me out (using denergy is no option for me)?
I'd like to output
My best guess is, your source is not inside the computational space
Send your scheme file!
Milan
-Original Message-
From: meep-discuss-boun...@ab-initio.mit.edu
[mailto:meep-discuss-boun...@ab-initio.mit.edu] On Behalf Of ???
Sent: dinsdag 2 november 2010 9:12
To: meep-discuss@ab-initio
dir.com/ml/science.electromagnetism.meep.general/2006-05/msg00010.html
Best regards,
Milan
-Original Message-
From: Serge Solntsev [mailto:suns...@gmail.com]
Sent: donderdag 14 oktober 2010 17:04
To: Marell, M.J.H.
Subject: Re: [Meep-discuss] How to find average energy density?
Hi Milan,
Tha
Hi Serge,
I'm working on a similar problem, I have a resonant cavity...
What I do is, I excite the cavity with a pulse and wait for the fields to
settle down.
As soon as the fields have settled down, I know extract Q factor of my cavity
plus the |E|^2 field distribution.
R. Loudon's paper back
Hi everybody,
I'd like to output the electric field intensity (|E|^2) from a 3D simulation.
I wrote the following function:
(define (eSquared r ex ey ez)
(+ (* (magnitude ex) (magnitude ex)) (* (magnitude ey) (magnitude ey)) (*
(magnitude ez) (magnitude ez
(define (output-efield2) (outpu
That's not what the release notes say about the PML...
http://ab-initio.mit.edu/wiki/index.php/Meep_release_notes
Best regards,
Milan
From: meep-discuss-boun...@ab-initio.mit.edu
[mailto:meep-discuss-boun...@ab-initio.mit.edu] On Behalf Of Ahmed, Sardar
Badar Munir 43
Sent: woensdag 13 oktobe
Hi everybody, Wen-Yu,
I have been confused by the explanation of the website myself. But from what I
have found, I feel that you can just fit the following equation to your data:
einf+(sigma*omega^2)/(omega^2-f^2-i*gamma*f)
While fitting, I use the frequency definition from the “Meep Introducti
Hi everybody,
I have theoretical question about some results that I obtained on metallic
waveguides (M-I-M).
I used MEEP to make a banddiagram of such a waveguide and the results I get
look credible.
I see no cut-off for the fundamental TM mode etc. etc...
Now what I'm wondering about, the band
Hi Alexander,
Just replace (delta-epsilon ...) with (sigma ...). That's all.
Best regards,
Milan
-Original Message-
From: meep-discuss-boun...@ab-initio.mit.edu
[mailto:meep-discuss-boun...@ab-initio.mit.edu] On Behalf Of Alexander Slesarev
Sent: Sunday, March 14, 2010 12:26 AM
To: m
_
From: Mischa Megens [mailto:meg...@eecs.berkeley.edu]
Sent: Tuesday, February 16, 2010 7:26 PM
To: Marell, M.J.H.
Subject: Re: [Meep-discuss] Parameter sweep in MEEP (scheme interface)
Hi Milan,
Yes there are several possibilities. In Scheme, you could use (do ...), or
make
Hello everybody,
Does anyone know if it is possible to sweep a certain parameter in MEEP, or do
some kind of loop, using the scheme interface.
I'd like to make some kind of 3D trapezoid shape by placing a lot of rectangles
with decreasing size on top of eachother.
Best regards,
Milan Marell
Something that works well for me, is surrounding my actual structure with a
material with an epsilon value considerably higher than the highest epsilon
used in my structure of interest (I use epsilon 36). For example:
(make block
(center 0 0)
(size infinity
I havent looked at your attached code yet, so I can't tell if it's due to a
mistake in your code...
But I still experience problems with dispersive materials inside the PML as
well. Though my model satisfies the 'stability criterion' given on the Wiki.
Best regards,
Milan Marell
-Origina
Dear all,
Does anybody know if it is possible make an accurate estimation of propagation
loss in a (simple rectangular) lossy waveguide by means of a unitcell
simulation & periodic boundary conditions?
That is, without simulating a very long waveguide and placing two flux planes
at a significan
Hi everybody,
Just a short question about specifying the material dispersion in MEEP... I got
a bit confused by the manual.
On the material dispersion page of the manual, there are two equations:
- One as a function of omega and gamma
- And one as a function frequency and gam
ailto:meep-discuss-boun...@ab-initio.mit.edu] On Behalf Of Steven G. Johnson
Sent: Tuesday, July 14, 2009 11:24 PM
To: MEEP Discuss
Subject: Re: [Meep-discuss] Meep not working anymore
On Jul 13, 2009, at 5:49 AM, Marell, M.J.H. wrote:
> After installing an update on my Debian (Squeeze/Testing) sys
Hi everybody,
After installing an update on my Debian (Squeeze/Testing) system, MEEP doesn't
work anymore.
I tried reinstalling everything (even Debian) from scratch, but I cant get it
to work.
All my simulations give the error:
ERROR: In procedure vector-ref:
ERROR: Wrong type
I have the same problem on my home laptop.
Entering the simulation line by line in the prompt doesn’t work.
Removing all packages and depencies related to MEEP and reinstalling everything
doesn’t work either
Best regards,
Milan
From: meep-discuss-boun...@ab-initio.mit.edu
[mailto:meep-discu
Dear Maciej,
Have you figured what is wrong with your simulation?
It's difficult to tell what is wrong without the scheme file, but... can't you
choose a different length scale instead of setting the resolution to a very
high value?
Best regards,
Milan
Can you post your scheme/C++ file? Or can you post a screenshot of the fields?
Sounds like there's something wrong with your metal objects and the PML, but
there's no way to tell for sure without more information...
Best regards,
Milan
From: meep-discuss-boun...@ab-initio.mit.edu
[mailto:meep-
Can you post your scheme/C++ file? Or can you post a screenshot of the fields?
Sounds like there's something wrong with your metal objects and the PML, but
there's no way to tell for sure without more information...
Best regards,
Milan
___
meep-discuss
Based on my experience, if we extend metallic waveguide into PML, the
result will be unstable. PML seems not working well with the dispersive
material,
especially when large portion of the dispersive material overlap with PML.
On Apr 23, 2009, at 8:47 AM, Marell, M.J.H. wrote:When perfo
Hi everybody,
I realize more people have encountered this problem before, but I haven't been
able to find a good solution yet.
When performing simulations on metallic waveguides, the waveguides have to be
terminated before they enter the PML.
Termination of the metallic waveguides before the P
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