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dispersion manaual caculation

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(joined July 2014)
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dear 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

Responses (8):

    • #16951
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      vignes
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      dear 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

    • #16954
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      Ravil
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      Hi Vignes, are you trying to calculate dispersion for SMF (material, waveguide, profile) or MMF?

    • #16958
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      vignes
      Participant

      dear ravil,

      kindly let me know for all things but nw i want to calculate material and waveguide dispersion

    • #16988
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      Damian Marek
      Participant

      It is straightforward to calculate D once you have B2. First convert the modal index to the propagation constant following the equation outlined by Abdallah:

      Modal index

      Then using a finite difference to approximate the second derivative you can calculate B2.

      http://en.wikipedia.org/wiki/Finite_difference

      Cheers

      • #17008
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        vignes
        Participant

        dear damian ,

        thank to u , i got that exactly lets cheer up and happy new year

    • #16994
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      Ravil
      Participant

      Dear Vignes,

      Simple explanation about material and waveguide dispersion calculation is given in attached book. Please, let me know if you have any questions.

    • #16995
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      Ravil
      Participant

      Sorry, 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…

      • #17009
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        vignes
        Participant

        dear ravil,

        thank to u, i will refer that, happy new year ravil

    • #17325
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      vignes
      Participant

      dear 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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