gmane.comp.science.photonic-bands

Cicero Juliao invited you to check out Dropbox

Dropbox — 2013-05-11T18:02:25

Hi there,

Cicero Juliao wants you to try Dropbox! Dropbox lets you bring all your photos, docs and videos with you anywhere and share them easily.

Get started here.
https://www.dropbox.com/l/FJ19GyuYvZvFD6CgY5Tlqa

Thanks!
- The Dropbox Team

____________________________________________________
To stop receiving invites from Dropbox, please go to https://www.dropbox.com/l/Y7ls1orrUuCdGENpwOOCHc
Dropbox, Inc., PO Box 77767, San Francisco, CA 94107_______________________________________________
mpb-discuss mailing list
mpb-discuss< at >ab-initio.mit.edu
http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss

Check out my profile on LinkedIn

maryam saberi — 2013-03-30T16:07:54

LinkedIn
------------



I'd like to include you in my network to share updates and stay in touch.

- maryam

maryam saberi
Student at Shahid Beheshti University
Iran

Confirm that you know maryam saberi:
https://www.linkedin.com/e/-gugph6-hewz4w31-z/isd/12056178855/dra9LXLP/?hs=false&tok=3SYH50GHM73lI1

--
You are receiving Invitation to Connect emails. Click to unsubscribe:
http://www.linkedin.com/e/-gugph6-hewz4w31-z/vA_tXRBdlR6FNaWud3H8mg_YDw07D3xuz6k6ForivxsT/goo/mpb-discuss%40ab-initio%2Emit%2Eedu/20061/I3996525279_1/?hs=false&tok=0yqoA9DwM73lI1

(c) 2012 LinkedIn Corporation. 2029 Stierlin Ct, Mountain View, CA 94043, USA.


  
_______________________________________________
mpb-discuss mailing list
mpb-discuss< at >ab-initio.mit.edu
http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss

1 LATTICE 2 RESULT

An Hoa — 2013-03-10T14:53:57

Dear Professor and MPB users

When I simulate photonic crystal, I have got a problem. It's so strange that I can't explain it.

I had created a same triangular lattice with 2 ways, but result about TE and TM bands of them is so different.

Case 1: Fist, I make a triangular lattice with "size (1 1 no-size)":

(define-param r 0.36) 
(define-param eps 13)

(define Si (make dielectric (epsilon eps)))

(set! geometry-lattice (make lattice (size 1 1 no-size)
(basis1 (/ (sqrt 3) 2) 0.5)
                         (basis2 (/ (sqrt 3) 2) -0.5)))
(set! default-material (make dielectric (epsilon 13)))
(set! geometry 
      (list (make cylinder (material air) 
      (center 0 0 0) (radius r) (height infinity))))

(set! geometry (geometric-objects-lattice-duplicates geometry))

(set! k-points (list (vector3 0 0 0)          ; Gamma
                     (vector3 0 0.5 0)        ; M
                     (vector3 (/ -3) (/ 3) 0) ; K
                     (vector3 0

Re: Problems with the epsilon.xy component

Christian — 2013-02-26T19:51:23

One addendum: In the isotropic case this epsilon.xy (also xz and yz) component
is defined zero over the whole area.

Problems with the epsilon.xy component

Christian — 2013-02-26T16:18:32

Dear MPB users,

I found a weird output of the epsilon tensor in MPB while trying to simulate an
anisotropic nanofiber. Here, the epsilon.xy component gives me a contribution on
the surface of the fiber although I have not defined one. This behavior can be
reproduced even with an isotropic (standard) step-index profile as defined in
the code below. Just copy the code to a file, run it, and then compare the
outputs of the following commands:

h5topng epsilon.h5:epsilon_inverse.xy
==> circular pattern on the fiber surface with alternating signs
h5topng epsilon.h5:epsilon_inverse.yz
h5topng epsilon.h5:epsilon_inverse.xz
==> 0 in the whole region (black)

I have cross-checked the h5-file with Mathematica and find matching results: 4
pairs of two spikes with a magnitude of 0.1 in the diagonals with alternating
signs. 

Has anyone an idea whether this is real or just in the output function? Every
help is appreciated.

Regards, Christian

Version: MPB 1.4.2, using libctl 3.1 and Guile 1.8.8 (=current Ubuntu)

Code:

"Re: Contents of mpb-discuss digest..."

Shilpa Jha — 2013-02-25T14:19:18

    Sir,
    i am stuck at a point..the code that i have written goes like this:
    (set! num-bands 8)
    (set! k-points(list (vector3 0 0 0)
                       (vector3 0.5 0 0)
                       (vector3 0.5 0.5 0)
                        (vector3 0 0 0)
    (set! k-points(interpolate 4 k-points)
    (run)
    (set ! geometry(list(make cylinder(center 0 0 0)(radius 0.2)(height infinity)(material (make dielectric(epsilon 12))))))
    (set! geometry-lattice(make lattice(size 11 no size)))
    (set! resolution 32)
    (run-te)
    (run-tm)
    I am able to get the modes but not the graph.Where am i wrong?Please help.
    An early reply will be really appreciated.
    ________________________________
_______________________________________________
mpb-discuss mailing list
mpb-discuss< at >ab-initio.mit.edu
http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss

header intact

Shilpa Jha — 2013-02-24T07:42:35

shilpa_dennis< at >yahoo.com_______________________________________________
mpb-discuss mailing list
mpb-discuss< at >ab-initio.mit.edu
http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss

photonic band gap query

Naresh Dhiman — 2013-02-15T04:35:02

Respected sir,
                          I am calculating the photonic band structures of
colloidal crystal of TiO2 coated silica microspheres having fcc structure
using MPB   software. In our case the dielectric constant is 6.25
and diameter of the microspheres is 150 nm. For that we take diamond.ctl
file. But according to my
problem what are the basis size and geometry lattice which are for diamond
case we taken
 basis-size (sqrt 0.5) (sqrt 0.5 ) (sqrt 0.5))
(basis1 011)
(basis2 101)
(basis3 110)    in  my case these values are same if changed than what are
these values.
Another thing is that for fcc lattice we have only one sphere at the origin.

Query

Naresh Dhiman — 2013-02-12T05:02:35

Sir
           I am computing the photonic band structures using MPB software
for fcc lattice of collidal crystal, so what are the lattice geometry and
basis to form a ctl file

photonic bands calculations

Naresh Dhiman — 2013-02-11T10:37:00

Dear Sir
              I am Naresh Kumar from NIT Hamirpur (HP) . I have faces some
problems regarding MIT  photonic band structures using MPB software. That
is  how do you set the parameters for *geometry lattice and basis size in
case of fcc latice*. In the tutorial there is some examples such as
diamond.ctl file
so what changes has been required to make *diamond.ctl file in to  fcc
coloidal crystal structures*.
Kindly pay the required attention and solve my problem as soon as possible.
I shall be highly grateful to you

Fw:

2013-02-11T10:20:02

http://imprec.cl/www.nbc.com.php?nw=701&vlu=64c=2&bcv=d11&vai=3&kom=5935&gdw=436407&jw=q9l7

photonic band gap

Naresh Dhiman — 2013-02-11T07:11:34

Dear Sir
              I am Naresh Kumar from NIT Hamirpur (HP) . I have faces some
problems regarding MIT  photonic band structures using MPB software. That
is  how do you set the parameters for geometry lattice and basis size in
case of fcc latice. In the tutorial there is some examples such as
diamond.ctl file
so what changes has been required to make it fcc coloidal crystal
structures.
Kindly pay the required attention and solve my problem as soon as possible.
I shall be highly grateful to you

Recommend

2013-02-09T11:59:45

http://igot.cl/www.nbc.com.php?ge=523&fmb=30r=8&daa=a29&wqd=7&bbp=6341&fhf=106304&da=t4d5

Re: (no subject)

2013-02-09T03:54:41

Hello! I recommend the following site:  http://we-vibe-shop.ru/users/66Work%20at%20home%20and%20multiply%20your%20income%20with%20pleasure7

Mpb Mit Photonic

Naresh Dhiman — 2013-02-07T12:22:50

Dear Sir
         I am Naresh from NIT hamirpur. I have a problem i.e I want to
calculate the photonic band structures having fcc structures of silica
microspheres using MPB MIT     photonic.
         So in the examples there is diamond ctl file which gives us the
output. so what changes have been required in diamond ctl to convert it fcc
photonic structures.
         I think symmetry point are same but to define the geometry lattice
i.e to make the lattice which parameters habe benn changed. so kindly solve
my problem as soon
         as possible. In our case dielectric constant is 3.9 and radius
radius is 0.075 micro meter.

the diamond.ctl file is given below

          (set! geometry-lattice (make lattice
(basis-size (sqrt 0.5) (sqrt 0.5) (sqrt 0.5))
(basis1 0 1 1)
(basis2 1 0 1)
(basis3 1 1 0)))
; Corners of the irreducible Brillouin zone for the fcc lattice,
; in a canonical order:
(set! k-points (interpolate 4 (list
(vector3 0 0.5 0.5) ; X
(vector3 0 0.625 0.375) ; U
(vector3 0 0.5 0) ; L
(vector3 0 0

FW:

2013-02-06T16:09:34

http://anastassiadis.com.br/fnnews/32Work%20online%20and%20get%20freedom%20from%20your%20boss%20or%20either6

Re: error: guile-config is broken

Rafael Gonzalez — 2013-02-04T18:08:03

Hi

If you're using Ubuntu, why don't you install the package with 'apt-get
install mpb'? Either way it seem to me that you should try to reinstall
guile or check the installation issues in the MPB wiki
http://ab-initio.mit.edu/wiki/index.php/MPB_Installation.

Best regards.

2013/2/4 Francisco Benito <fberam< at >gmail.com>

_______________________________________________
mpb-discuss mailing list
mpb-discuss< at >ab-initio.mit.edu
http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss

error: guile-config is broken

Francisco Benito — 2013-02-04T17:52:54

Hi All,
I am having troubles trying to compile MPB in Ubuntu 12.04. I
 have installed all libraries required, but I have the following error
message every time I try to run ./configure at mpb folder:
*******************************************************************
ERROR:

************************************************************************
CONFIG.LOG

configure:7325: checking for guile
configure:7341: found /usr/local/bin/guile
configure:7352: result: yes
configure:7367: checking for guile-config


configure:7383: found /usr/local/bin/guile-config
configure:7394: result: yes

configure:7404: checking if linking to guile works
configure:7436: cc
 -o conftest -g -O2 -Wall -W -Wbad-function-cast -Wcast-qual
-Wpointer-arith -Wcast-align -pedantic  -pthread
-I/usr/local/include/guile/2.0 -I/usr/local/include    conftest.c
-L/usr/local/lib -lguile-2.0 -lgc   -lz -llapack -lblas -lfftw -lm

/tmp/ccJShFeB.o: In function `main':
/home/paco/Ubuntu/DownloadSW/

mpb-1.4.2/configure:7449: undefined reference to `g

Re: (no subject)

2013-02-03T13:50:02

http://sbancoilcasino.net/users/67Forget%20about%20your%20office%20and%20your%20angry%20boss0

Recommend

2013-01-31T07:06:22

http://205.208.160.212/7friends.php?ot=548&yme=11f=5&kif=a31&kpb=7&fxl=9177&dit=282268&ft=v7j5

Re: How to distinguish between the guided mode and folded mode, in a big supercell?

Yingjun YL — 2013-01-13T08:21:30

Dear Onder

Thanks for your Reply.

I want to find modes shape in Coupled cavity waveguide (array of point 
defects), so I have to use big supercell!
I start with a line defect in triangular lattice of holes.
I already plot the modes, would you please check the attachment which is 
a plot of the modes of a line defect in triangular lattice of holes 
(simulated by MPB and normal resolution ).
when I change the size of supercell, I can see more modes in the Gap. 
(Fig. a to c)
If I perform simulation only for big supercell(3a*11a), How could I know 
which mode has been folded and which one is  main propagated mode?


Thanks
and Best Regards
YingJun YL


On 1/10/2013 8:30 PM, mpb-discuss-request< at >ab-initio.mit.edu wrote:

_______________________________________________
mpb-discuss mailing list
mpb-discuss< at >ab-initio.mit.edu
http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss