Rank: 787 based on 93 downloads (last 30 days) and 3 files submitted
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Kotya Karapetyan

E-mail
Company/University
Uni Bonn
Lat/Long
50.728275, 7.088135

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Professional Interests:
optics, simulation, information organization

 

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Files Posted by Kotya View all
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30 Nov 2012 Screenshot Avantes to Matlab Read spectral data from Avantes USB2 spectrometer files Author: Kotya Karapetyan avantes, spectrometer, optics 12 0
10 Dec 2011 Screenshot Flickr API with OAuth-based user authentication Matlab implementation of Flickr-compatible OAuth Author: Kotya Karapetyan oauth, data import, data export, flickr, demo, article 7 0
08 Dec 2011 Screenshot Optical Fibre Toolbox Simulation of optical fiber modes Author: Kotya Karapetyan fiber, fiber amplifiers, diferencias finitas, mode, field, effective refractive ... 74 18
  • 4.25
4.2 | 6 ratings
Comments and Ratings by Kotya View all
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06 Feb 2013 Optical Fibre Toolbox Simulation of optical fiber modes Author: Kotya Karapetyan

I apologize that I cannot answer each comment here. The two-layer model implemented in the OFT has been thoroughly checked numerous times. It has been used for a couple of years now to compare against our results in various experiments. Plus it was used to verify the three-layer model, whenever possible. No mistakes have been found in the recent time, the two-layer code is stable. Therefore I am pretty sure there are no mistakes in that part of the code. Mistakes (typos) do occur in books and papers however. Also, different notations and/or assumptions can be made, e.g. concerning the coordinate system or polarisation direction.
19 Nov 2012 Optical Fibre Toolbox Simulation of optical fiber modes Author: Kotya Karapetyan

Robert, I have just downloaded OFT from this page and run demo/oftDemo.m with Matlab 2009b and 2012b. In both cases it has completed without problems.
23 May 2012 DataHash MD5 or SHA hash for array, struct, cell or file Author: Jan Simon

It would be nice to be able to check the returned values against some public results. For example Wikipedia mentions MD5("") = d41d8cd98f00b204e9800998ecf8427e and MD5("The quick brown fox jumps over the lazy dog.")
= e4d909c290d0fb1ca068ffaddf22cbd0, and I don't know how to get the same from DataHash to check it.
24 Apr 2012 Optical Fibre Toolbox Simulation of optical fiber modes Author: Kotya Karapetyan

harsimran, repeating the same question doesn't really help. Unless you provide details on what needs to be calculated, I cannot help you. If you don't know yourself, OFT will not be of help, neither will be Matlab.
22 Apr 2012 Optical Fibre Toolbox Simulation of optical fiber modes Author: Kotya Karapetyan

harsimran, I am afraid I do not understand your question. What do you mean by "implementing OFDM" with OFT? What exactly do you need to calculate?
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06 Feb 2013 Optical Fibre Toolbox Simulation of optical fiber modes Author: Kotya Karapetyan Karapetyan, Kotya

I apologize that I cannot answer each comment here. The two-layer model implemented in the OFT has been thoroughly checked numerous times. It has been used for a couple of years now to compare against our results in various experiments. Plus it was used to verify the three-layer model, whenever possible. No mistakes have been found in the recent time, the two-layer code is stable. Therefore I am pretty sure there are no mistakes in that part of the code. Mistakes (typos) do occur in books and papers however. Also, different notations and/or assumptions can be made, e.g. concerning the coordinate system or polarisation direction.
17 Jan 2013 Optical Fibre Toolbox Simulation of optical fiber modes Author: Kotya Karapetyan Jing

I think there might be a mistake.

In the file modeField.m
according to Snyder's book
m is odd, it is HE mode
f=sin(nu*phi); g=cos(nu*phi);

But in your code,
f = @(nu,phi) cos(nu*phi);
g = @(nu,phi) -sin(nu*phi);
19 Nov 2012 Optical Fibre Toolbox Simulation of optical fiber modes Author: Kotya Karapetyan Karapetyan, Kotya

Robert, I have just downloaded OFT from this page and run demo/oftDemo.m with Matlab 2009b and 2012b. In both cases it has completed without problems.
16 Nov 2012 Optical Fibre Toolbox Simulation of optical fiber modes Author: Kotya Karapetyan Robert

16 Nov 2012 Optical Fibre Toolbox Simulation of optical fiber modes Author: Kotya Karapetyan Robert

I tried out the demo oftDemo without modifications. It found modes and showed me the field profiles, but it also claimed that there are "traceMode WARNING: too little amount of points in the mode" and the dispersion curves that i got were empty.
Top Tags Applied by Kotya
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optics, article, avantes, data export, data import
Files Tagged by Kotya View all
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Updated   File Tags Downloads
(last 30 days) 		Comments Rating
30 Nov 2012 Screenshot Avantes to Matlab Read spectral data from Avantes USB2 spectrometer files Author: Kotya Karapetyan avantes, spectrometer, optics 12 0
10 Dec 2011 Screenshot Flickr API with OAuth-based user authentication Matlab implementation of Flickr-compatible OAuth Author: Kotya Karapetyan oauth, data import, data export, flickr, demo, article 7 0
08 Dec 2011 Screenshot Optical Fibre Toolbox Simulation of optical fiber modes Author: Kotya Karapetyan fiber, fiber amplifiers, diferencias finitas, mode, field, effective refractive ... 74 18
  • 4.25
4.2 | 6 ratings

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