- This topic has 8 replies, 3 voices, and was last updated 10 years, 9 months ago by
vignes.
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December 30, 2014 at 3:30 am #16951
vignes
Participantdear team,
i have collected the various effective mode index for some range of wavelength.. and also data is extracted , now i need to calculate the dispersion coefficient to plot the graph (D vs wvaelength), kindly let me know about that calculation
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December 30, 2014 at 10:52 am #16954
Ravil
ParticipantHi Vignes, are you trying to calculate dispersion for SMF (material, waveguide, profile) or MMF?
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December 31, 2014 at 1:26 am #16958
vignes
Participantdear ravil,
kindly let me know for all things but nw i want to calculate material and waveguide dispersion
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January 2, 2015 at 12:01 pm #16988
Damian Marek
ParticipantIt is straightforward to calculate D once you have B2. First convert the modal index to the propagation constant following the equation outlined by Abdallah:
Then using a finite difference to approximate the second derivative you can calculate B2.
http://en.wikipedia.org/wiki/Finite_difference
Cheers
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January 2, 2015 at 11:33 pm #16994
Ravil
ParticipantDear Vignes,
Simple explanation about material and waveguide dispersion calculation is given in attached book. Please, let me know if you have any questions.
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January 2, 2015 at 11:49 pm #16995
Ravil
ParticipantSorry, can attach it due to large size but here is the name
“Optoelectronics-and-Photonics-Principles-and-Practices-S-O-Kasap-Prentice-Hall-2001”
you can find it online… -
January 26, 2015 at 11:36 am #17325
vignes
Participantdear all,
can any one give the demo of beta2 calculation or code to plot the dispersion curve vs wavelength for my generated effective mode index
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