Home Forums FDTD Long Period Grating simulation in Optical Fiber

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    • #19449

      Hello Everyone !

      I want to know that on Optifdtd, could Long Period grating (LPG) in any optical fiber be created (virtually) and the same can be simulated for transmission and reflectance peaks.

      Please answer asap.

    • #19504
      Damian Marek

      The FDTD method is limited to smaller sized domains as it is very computationally intensive. For long period gratings I would suggest OptiGrating.


    • #19535

      Ok. I will read more about Optigrating. I have one more question to you Damian – If I have to taper an optical fiber (plastic optical fiber) and use the tapered region for sensing, can it be performed in OptiFTDT ?


      • #19559
        Damian Marek

        Again this depends on the specifics of the design. If the taper is short enough then yes! However, if the taper is over a couple of mm’s then the FDTD method would be unsuitable.

    • #19575

      it is of 7-8 mm.

    • #19576

      which software could do that ?

      • #19581
        Damian Marek

        If the fiber does not have a grating, it could be simulated with OptiBPM.

    • #19585

      Yes Damian, the tapered fiber is separate, the tapering is done on plastic optical fiber.

      Grating is not involved in this. An image of taper is attached below. It may be from 7- 13 mm.

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