Photonics

Photonics

Topics related to Lumerical and more

Transmission equation used in FDTD and MODE

    • gpsar
      Subscriber

      I know the equation Lumerical uses for transmission is shown here

      https://optics.ansys.com/hc/en-us/articles/360034405354-transmission-Script-command but when you solve for the Poynting vector what is the result? Does P = |E|^2? 

    • Amrita Pati
      Ansys Employee

      Hello,

      The equation for Poynting vector is given as:
      Regards,
      Amrita

    • gpsar
      Subscriber

      Hi Amrita, 

      Thanks for your answer. But what is the result of integrating the Poynting vector, since you are only taking the real part?

      • Amrita Pati
        Ansys Employee

        Hello,

        The Poynting vector is integrated over the monitor surface to determine the total power through the monitor cross-section. The total power is then normalized to the source power to calculate the transmission.

        More details can be found on the following page:
        Integrating the Poynting Vector

        Regards,
        Amrita

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