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我仿真光学双稳态的时候为什么总是发散啊

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#1

自 关于设定介电常数张量的问题 继续讨论：
这个问题太宽了，没有针对性。你是直接用网上的例子吗？如是，计算机操作系统版本是什么？软件是什么版本？我这里测试网上例子没有问题。现在已经是v8.17.1072，请下载最新版测试。

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#2

很感谢得到孙老师的回复，就是我仿真网上的例子没有问题，但是在仿真其他文献时，按照网上的例子修改脚本，却得不到正确的结果，麻烦老师看一下

在2017-01-11 03:02:33，陈德超cdc12345@hnu.edu.cn写道：

|
| | gsunLumerical Team
January 10 |
|
|

自 关于设定介电常数张量的问题 继续讨论：
这个问题太宽了，没有针对性。你是直接用网上的例子吗？如是，计算机操作系统版本是什么？软件是什么版本？我这里测试网上例子没有问题。现在已经是v8.17.1072，请下载最新版测试。

|

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#3

你需要提供文件啊！否则我们没有办法猜出问题所在。

#4

forward.fsp (363.0 KB)
这个是我的文件，这个是我的脚本，不知道哪里错了

1913×1024 148 KB

closeall;
clear;
w0 = 2pic/550e-9; # center frequency
Imin = 0.01; Imax = 0.5;

load(“reverse.fsp”);
Ey = getdata(‘monitor_2’,‘Ey’);
Esy = getdata(‘monitor_2_1’,‘Ey’);
t = getdata(‘monitor_2’,‘t’);
I = linspace(Imin, Imax, length(t));
zero_pad = 2^16;
w = fftw(t,1,zero_pad);
filter1 = 2*exp(-(w-w0)^2/(150e12)^2);

remove high frequency components

Ey_through_w = 2*((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Ey),1,zero_pad);
Ey_through_t = invfft(pinch(Ey_through_w)filter1);
Ey_through_t = Ey_through_t(1:length(t));
Esy_through_w = 2((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Esy),1,zero_pad);
Esy_through_t = invfft(pinch(Esy_through_w)*filter1);
Esy_through_t = Esy_through_t(1:length(t));

load(“reverse.fsp”);
Ey_r = getdata(‘monitor_2’,‘Ey’);
Esy_r = getdata(‘monitor_2_1’,‘Ey’);
t = getdata(‘monitor_2’,‘t’);
I_r = linspace(Imax, Imin, length(t));
zero_pad = 2^16;
w = fftw(t,1,zero_pad);
filter1 = 2*exp(-(w-w0)^2/(150e12)^2);

remove high frequency components

Ey_through_w_r = 2*((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Ey_r),1,zero_pad);
Ey_through_t_r = invfft(pinch(Ey_through_w_r)filter1);
Ey_through_t_r = Ey_through_t_r(1:length(t));
Esy_through_w_r = 2((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Esy_r),1,zero_pad);
Esy_through_t_r = invfft(pinch(Esy_through_w_r)*filter1);
Esy_through_t_r = Esy_through_t_r(1:length(t));

plot results

plotxy(I, abs(Ey_through_t)^2/abs(Esy_through_t)^2,
I_r, abs(Ey_through_t_r)^2/abs(Esy_through_t_r)^2,
‘I (MW/cm^2)’,’(E_out/E_source)^2’);
legend(“Increasing Source Intensity”, “Decreasing Source Intensity”);

#5

此类仿真的主要问题是银材料。我做了一些修改，现在不发散，但是结果是否符合预期还需要你进一步测试。
forward.fsp (366.8 KB)

#6

孙老师，经过调试之后还是不行，学生不知道哪里出错了~这是我仿真脚本，一个是获取信号光的脚本，一个是获得双稳态的脚本。希望得到您的指导，我用的文件是您修改过的那个

1060×556 75 KB
876×486 70.1 KB
1914×961 121 KB

closeall;
clear;
w0 = 2pic/550e-9; # center frequency
Imin = 00; Imax = 700;

load(“13forward.fsp”);
Ey = getdata(‘monitor_2’,‘Ey’);
Esy = getdata(‘monitor_2_1’,‘Ey’);
t = getdata(‘monitor_2’,‘t’);
I = linspace(Imin, Imax, length(t));
zero_pad = 2^16;
w = fftw(t,1,zero_pad);
filter1 = 2*exp(-(w-w0)^2/(150e12)^2);

remove high frequency components

Ey_through_w = 2*((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Ey),1,zero_pad);
Ey_through_t = invfft(pinch(Ey_through_w)filter1);
Ey_through_t = Ey_through_t(1:length(t));
Esy_through_w = 2((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Esy),1,zero_pad);
Esy_through_t = invfft(pinch(Esy_through_w)*filter1);
Esy_through_t = Esy_through_t(1:length(t));

load(“reverse.fsp”);
Ey_r = getdata(‘monitor_2’,‘Ey’);
Esy_r = getdata(‘monitor_2_1’,‘Ey’);
t = getdata(‘monitor_2’,‘t’);
I_r = linspace(Imax, Imin, length(t));
zero_pad = 2^16;
w = fftw(t,1,zero_pad);
filter1 = 2*exp(-(w-w0)^2/(150e12)^2);

remove high frequency components

Ey_through_w_r = 2*((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Ey_r),1,zero_pad);
Ey_through_t_r = invfft(pinch(Ey_through_w_r)filter1);
Ey_through_t_r = Ey_through_t_r(1:length(t));
Esy_through_w_r = 2((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Esy_r),1,zero_pad);
Esy_through_t_r = invfft(pinch(Esy_through_w_r)*filter1);
Esy_through_t_r = Esy_through_t_r(1:length(t));

plot results

plotxy(I, abs(Ey_through_t)^2/abs(Esy_through_t)^2,
I_r, abs(Ey_through_t_r)^2/abs(Esy_through_t_r)^2,
‘I (MW/cm^2)’,’(E_out/E_source)^2’);
legend(“Increasing Source Intensity”, “Decreasing Source Intensity”);

#7

光有脚本没有文件也不行啊！另外请将你的脚本用文件格式上传，而不是直接贴子这里。

#8

孙老师，我的文件用的是你调整后的那个，我在邮件中说过了，可能你没有看到13forward.fsp (3.8 MB)

#9

13forward.fsp (3.8 MB)
孙老师，不好意思哈，这是我的文件~这是我的脚本，出来的还是发散的，不知道什么原因
closeall;
clear;
w0 = 2pic/550e-9; # center frequency
Imin = 0.01; Imax = 0.5;

load(“13forward.fsp”);
Ey = getdata(‘monitor_2’,‘Ey’);
Esy = getdata(‘monitor_2_1’,‘Ey’);
t = getdata(‘monitor_2’,‘t’);
I = linspace(Imin, Imax, length(t));
zero_pad = 2^16;
w = fftw(t,1,zero_pad);
filter1 = 2*exp(-(w-w0)^2/(150e12)^2);

remove high frequency components

Ey_through_w = 2*((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Ey),1,zero_pad);
Ey_through_t = invfft(pinch(Ey_through_w)filter1);
Ey_through_t = Ey_through_t(1:length(t));
Esy_through_w = 2((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Esy),1,zero_pad);
Esy_through_t = invfft(pinch(Esy_through_w)*filter1);
Esy_through_t = Esy_through_t(1:length(t));

load(“reverse.fsp”);
Ey_r = getdata(‘monitor_2’,‘Ey’);
Esy_r = getdata(‘monitor_2_1’,‘Ey’);
t = getdata(‘monitor_2’,‘t’);
I_r = linspace(Imax, Imin, length(t));
zero_pad = 2^16;
w = fftw(t,1,zero_pad);
filter1 = 2*exp(-(w-w0)^2/(150e12)^2);

remove high frequency components

Ey_through_w_r = 2*((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Ey_r),1,zero_pad);
Ey_through_t_r = invfft(pinch(Ey_through_w_r)filter1);
Ey_through_t_r = Ey_through_t_r(1:length(t));
Esy_through_w_r = 2((1:length(w))<=(length(w)/2+0.1))*fft(pinch(Esy_r),1,zero_pad);
Esy_through_t_r = invfft(pinch(Esy_through_w_r)*filter1);
Esy_through_t_r = Esy_through_t_r(1:length(t));

plot results

plotxy(I, abs(Ey_through_t)^2/abs(Esy_through_t)^2,
I_r, abs(Ey_through_t_r)^2/abs(Esy_through_t_r)^2,
‘I (MW/cm^2)’,’(E_out/E_source)^2’);
legend(“Increasing Source Intensity”, “Decreasing Source Intensity”);

#10

孙老师，我的文件就是用你发给我的那个，您久等了

在2017-01-14 06:21:49，陈德超cdc12345@hnu.edu.cn写道：

|
| | gsunLumerical Team
January 13 |
|
|

光有脚本没有文件也不行啊！另外请将你的脚本用文件格式上传，而不是直接贴子这里。

|

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In Reply To
|
| | cdc12345
January 13 |
|
| 孙老师，经过调试之后还是不行，学生不知道哪里出错了~这是我仿真脚本，一个是获取信号光的脚本，一个是获得双稳态的脚本。希望得到您的指导，我用的文件是您修改过的那个 [image][image][image][image] closeall; clear; w0 = 2pic/550e-9; # center frequency Imin = 00; Imax = 700; load(“13forward.fsp”); Ey = getdata(‘monitor_2’,‘Ey’); Esy = getdata(‘monitor_2_1’,‘Ey’); t = getdata('monitor… |

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#11

孙老师，我用的文件就是您发给我的那个

#12

我这边再次测试你发过来的文件，没有看到发散；

604×719 36.9 KB

你看到这个警示了吗？
https://kb.lumerical.com/en/divergence_warning.png
如果看到了，说明你版本有问题，请下载最新版。

我说你的文件没有，是指reverse.fsp这个文件。前向仿真已经通过没有任何问题。

你不需要将脚本帖在这里，而是保存为一个文件发上来。

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