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小火龙果 2020-05-28 16:28

RP Fiber Power仿真设计掺铥光纤激光器代码详解

(* 6#-6Bh)>4  
Demo for program"RP Fiber Power": thulium-doped fiber laser, 1P+Mv^%I  
pumped at 790 nm. Across-relaxation process allows for efficient mfu*o0   
population of theupper laser level. ?@3#c  
*)            ！（*  *）注释语句 c"sj)-_  
0[V&8\S~'T  
diagram shown: 1,2,3,4,5  ！指定输出图表 }A^ 1q5  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 rn5"o8|  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 .Ln;m8  
; 3:"Variation of the Fiber Length"！信号输出功率vs 光纤长度的变化，仿真最佳光纤长度 y T[Lzv#  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 K~`n}_:  
; 5:"Transition Cross-sections"    ！不同波长的跃迁横截面，横坐标波长，纵坐标为横截面 l.XknF  
\R6;Fef  
include"Units.inc"         ！读取“Units.inc”文件中内容 \Y51KB\  
_=o1?R  
include"Tm-silicate.inc"    ！读取光谱数据 ;[FW!  
[u/zrpTk  
; Basic fiberparameters:    ！定义基本光纤参数 t9?R/:B%  
L_f := 4 { fiberlength }      ！光纤长度 O3_D~O ."  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 T g3:VD  
r_co := 6 um { coreradius }                ！纤芯半径 8]sTX9  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 R#"U/8b>z  
]jHgo](%  
; Parameters of thechannels:                ！定义光信道 IUluJ.sXIf  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm V<7R_}^_7  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 fKPiRlLS  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W !T<z'zZU  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um +L^A:}L(  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 ybD{4&ZE  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 3C> 2x(]M  
-s9Y(>  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm =nJOaXR0  
w_s := 7 um                          ！信号光的半径 c+@d'yR  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 %MfGVx}nG  
loss_s := 0                            ！信号光寄生损耗为0 t7{L[C$  
9X 5*{f Y  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 k)N2 +/  
e#l*/G*,  
; Function for defining themodel:   ！定义模型函数，一定要有calc命令，否则函数只会被定义，但不会被执行 )m|X;eEo  
calc Vpug"aR&_  
  begin yf `.%  
    global allow all;                   ！声明全局变量 UI|v/(_^F  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 ^/_\etV  
    add_ring(r_co, N_Tm); r!{w93rPX  
    def_ionsystem();              ！光谱数据函数 y+K7WUwhq  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 #2_o[/&}x@  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 p<Zs*  @  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 B'G*y2UnG  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 "wT ~$I"  
    finish_fiber();                                   7sQ]w   
  end; ^/`#9]<%  
p{mxk)A  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 ^4u3Q  
show "Outputpowers:"                                   ！输出字符串Output powers： @D.R0uM  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） t x:rj6 -z  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） /3)YWFZZc  
ATYQ6E[{MV  
* kX3sG$8  
; ------------- GN htnB  
diagram 1:                   !输出图表1 Ee t+  
w5dI k]T  
"Powers vs.Position"          ！图表名称 n:5O9,umZ  
Z$OF|ZZQ  
x: 0, L_f                      ！命令x: 定义x坐标范围 s=^r/Sz902  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 ,Az`6PW  
y: 0, 15                      ！命令y: 定义y坐标范围 &rl]$Mtt  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 "!%w9  
frame          ！frame改变坐标系的设置 4i+PiD:H  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） 68&6J's;  
hx             ！平行于x方向网格 0[Xt,~  
hy              ！平行于y方向网格 %{N$1ht^  
>gX0Ij#G  
f: P(pump, x),    ！命令f: 定义函数图；P(pump, x)函数是计算x位置处的泵浦光功率 BNL8hK`D  
  color = red,  ！图形颜色 yNhscAMNn  
  width = 3,   ！width线条宽度 Y{Y;EY4  
  "pump"       ！相应的文本字符串标签 cXLV"d  
f: P(signal_fw, x),  ！P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 "Cyo<|  
  color = blue,     VgFF+Eg  
  width = 3, wzHjEW  
  "fw signal" `_J^g&y~  
f: P(signal_bw, x),   ！P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 l6&v}M  
  color = blue, .R$+#_  
  style = fdashed, a`EGx{q(  
  width = 3, LH3N}J({  
  "bw signal" *!r\GGb  
| Q1ub S  
f: 100 * n(x, 2),    ！n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 v GR \GFm  
  yscale = 2,            ！第二个y轴的缩放比例 h9Tf@]W   
  color = magenta, &J6o$i  
  width = 3, 5O;a/q8"  
  style = fdashed, !_XU^A>  
  "n2 (%, right scale)" F9u:8;\@`  
u/!mN2{Rd  
f: 100 * n(x, 3),          ！n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 4,w{rmj  
  yscale = 2, e\d5SKY  
  color = red, <iXS0k  
  width = 3, D_yY0rRM  
  style = fdashed, /+<%,c$n  
  "n3 (%, right scale)" ;G4HMtL  
7/^TwNsv  
[/+dHW|  
; ------------- X>6 ~{3  
diagram 2:                    ！输出图表2 r'9=k x  
-KIVnV=&m  
"Variation ofthe Pump Power" j^aQ>(t(9  
U>L=.\\|  
x: 0, 10 48~m=mI  
"pump inputpower (W)", @x L6rs9su=7  
y: 0, 10 Lilk8|?#W  
y2: 0, 100 ^O$[Y9~*  
frame `G ;Lz^  
hx w}U5dM`  
hy (v'lb!j^#  
legpos 150, 150 H%01&u  
=|6^)lt$  
f: (set_P_in(pump, x);P_out(signal_fw)), ！set_P_in(pump,x)改变泵浦信道功率；P_out(signal_fw)输出前向信号光 G3_mWppH  
  step = 5, ~G{$P'[  
  color = blue, Hz3 S^o7  
  width = 3, U&w 5&W{F}  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 MOqA$b  
  finish set_P_in(pump, P_pump_in) CJ}@R.Zy  
?9('o\N:  
f: (set_P_in(pump,x); 100 * n_av(2)),   ！改变泵浦信号功率对能级2上激活粒子占比的影响 OO !S w  
  yscale = 2, \6`%NhkM_  
  step = 5, {o5K?Pb  
  color = magenta, j6R{  
  width = 3, }lNuf u  
  "population of level 2 (%, rightscale)", H%NLL4&wu  
  finish set_P_in(pump, P_pump_in)  ,3@15j  
Yyo9{4v+p{  
f: (set_P_in(pump,x); 100 * n_av(3)),   ！改变泵浦信号功率对能级3上激活粒子占比的影响 Z z; <P  
  yscale = 2, '#4mDz~  
  step = 5, ,a]~hNR*X  
  color = red, zFdz]z3  
  width = 3, ,],JI|Rl8c  
  "population of level 3 (%, rightscale)", /H;kYx  
  finish set_P_in(pump, P_pump_in) @8<uAu%  
-4^@)~Y  
dnX`F5zd  
; ------------- ' ! UF&  
diagram 3:                         ！输出图表3 i3kI2\bd/  
~g4rGz  
"Variation ofthe Fiber Length" oVEr{K)  
%\{?(baOA  
x: 0.1, 5 !iitx U  
"fiber length(m)", @x R 6yvpH  
y: 0, 10 [>J~M!yu:r  
"opticalpowers (W)", @y 2`FsG/o\T~  
frame ANpY qV  
hx |L_g/e1A3  
hy Ay"2W%([`  
VrGb;L'[  
f: (set_L(x);P_out(signal_fw)),     ！改变光纤长度对信号光输出功率的影响 KEVy%AP=*h  
  step = 20,             0Li'a{n2  
  color = blue, :AE;x&  
  width = 3, ?9r,Y;,H  
  "signal output" 3~3(G[w  
Q RmQ>  
;f: (set_L(x);P_out(pump)),                     ！改变光纤长度对泵浦信号输出功率的影响 }b ]y 0"  
   step = 20, color = red, width = 3,"residual pump" iJaNP%N  
9uq+Ve>  
! set_L(L_f) {restore the original fiber length } /DG`Hg  
 +SA<0l  
2wuW5H8w{  
; ------------- u FYQ^  
diagram 4:                                  ！输出图表4 8.Own=G?  
W$MEbf%1  
"TransverseProfiles" xc]C#q  
q(ET)xCeD  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) )|^<woli,  
>->xhlL*  
x: 0, 1.4 * r_co /um b}U&bFl  
"radialposition (µm)", @x 8.%a"sxr  
y: 0, 1.2 * I_max *cm^2 -IsdU7}  
"intensity (W/ cm&sup2;)", @y |8U7C\S[  
y2: 0, 1.3 * N_Tm i e)1h  
frame _:=OHURc  
hx dR, NC-*  
hy +i_f.Ipp  
.6Lhy3x  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 ttq< )4  
  yscale = 2, #z^1)7  
  color = gray, JX@6Sg<  
  width = 3, 19-yM`O  
  maxconnect = 1, {6y.%ysU  
  "N_dop (right scale)" 1> @|  
k$x 'v#  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 FQ~ead36C  
  color = red, TYS\:ZdXF  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 dpn&)?f  
  width = 3, `"=L  
  "pump" (xSi6EZ6;  
*rFbehfH  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 rMg{j gD  
  color = blue, Hkz~9p  
  maxconnect = 1, {f-/,g~  
  width = 3, 2l/5i]Tq  
  "signal" Yl~?MOk  
iGeT^!N  
-5_xI)i  
; ------------- Qnb?hvb"d  
diagram 5:                                  ！输出图表5 Eno2<<  
)qP{X,Uf  
"TransitionCross-sections" B';> Hk  
iK:qPrk-  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) Vh9s.=*P@  
vyOC2c8  
x: 1450, 2050 -%gd')@SfD  
"wavelength(nm)", @x L.%~?T[F  
y: 0, 0.6 M "P  
"cross-sections(1e-24 m&sup2;)", @y o^"3C1j  
frame z,x"vK(  
hx QpTNU.v5f  
hy #5:A?aj  
'\E{qlI  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 Vyq<T(5  
  color = red, ~Q 9)Q  
  width = 3, ;Y&?ixx  
  "absorption" [QN7+#K,  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 m+^;\DFJ,  
  color = blue, k^\ &.63(  
  width = 3, /IW=+ri  
  "emission" QuRg(K%:  
"LIii1]k  
lileisgsz 2021-09-28 09:47
感谢，视频上有点看不清楚
查看本帖完整版本: [-- RP Fiber Power仿真设计掺铥光纤激光器代码详解 --] [-- top --]

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