关于弯曲波导（FEEM）的请教

- October 11, 2023 at 8:21 am
  
  Naomi Tse
  Subscriber
  
  老师您好，我按照这个页面运行案例https://optics.ansys.com/hc/en-us/articles/4409707153811-Bent-Waveguide-FEEM-
  在第二步“As expected, the mode field has moved to the outside of the waveguide bend compared to the straight waveguide mode. The calculated effective index is 2.39784 + 7.89557e-06i with a loss of 278.001 dB/cm.”得到的并不是这个值，而是Effective index (mode 1): 2.3904 + 0i
  第三步也会报错“Error: E:/simulation/one/feem/waveguide_bend_radius_sweep.lsf line 33: all y matrix must have the same length”
  请问这个是怎么回事呢？我该怎么做呢？
- October 11, 2023 at 5:42 pm
  
  Guilin Sun
  Ansys Employee
  
  第二步问题是因为你没有设置为弯曲波导：
  bent_flag = true;
  run_feem_simulation;
  Effective index (mode 1): 2.39787 + 7.89995e-06i
  Loss (mode 1): 278.155 dB/cm
  第三步我测试没有问题：
  - October 15, 2023 at 5:22 am
    
    Naomi Tse
    Subscriber
    
    第二步我改成true了耶，但是我最开始打开文件时有提醒版本不够新，可能是这个原因吗老师？
- October 16, 2023 at 3:09 pm
  
  Guilin Sun
  Ansys Employee
  
  有可能的。请更新为最新版本。