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Why FDTD uses pulsed light source excitation instead of sine wave light source？

- October 22, 2021 at 1:37 am
  
  paopaowenhua
  Subscriber
  
  The Ansys Insight post named “Why FDTD uses pulsed light source excitation instead of sine wave light source？” on old forum website is not available. And I can't find it on new learning forum. Could you help paste the content？@gsun FDTD Solutions为什么采用脉冲光源激励而不采用正弦波光源 86
- October 22, 2021 at 6:03 pm
  
  Guilin Sun
  Ansys Employee
  
  The Chinese version is here: Ansys Insight: FDTD õ©║õ╗Çõ╣êÚççþö¿ÞäëÕå▓Õàëµ║Éµ┐ÇÕè▒ÞÇîõ©ìÚççþö¿µ¡úÕ╝ªµ│óÕàëµ║É
  Basically, whether you want a broadband or single-frequency result, the simulation with pulse source is much faster than using a sinusoidal wave, which will need an initial transient time, and then long steady state time in order to get the result at only a single frequency.

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