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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

(* Ri/D>[  
Demo for program"RP Fiber Power": thulium-doped fiber laser, \SooIEl@  
pumped at 790 nm. Across-relaxation process allows for efficient Y;=GM:*H  
population of theupper laser level. !-Uq#Ea0/  
*)            ！（*  *）注释语句 2m,t<Y;  
({<qs}H"  
diagram shown: 1,2,3,4,5  ！指定输出图表 PTpGZ2FZ  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 H,(4a2zx  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 ._p^0UxT  
; 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 ua!RwSo  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 2OwO|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 %'MR;hQsd8  
m!WDXt  
include"Units.inc"         ！读取“Units.inc”文件中内容 vMYEP_lhK,  
eC='[W<a.  
include"Tm-silicate.inc"    ！读取光谱数据 V!f' O@p[  
:+<GJj_d+  
; Basic fiberparameters:    ！定义基本光纤参数 `08}y*E  
L_f := 4 { fiberlength }      ！光纤长度 r12e26_Ab  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 pnGDM)H7  
r_co := 6 um { coreradius }                ！纤芯半径 ]#\/1!W  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 S[y?>  
*#Iqz9X.Y3  
; Parameters of thechannels:                ！定义光信道 \4|osZ0y  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm YH3[Jvzf4  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 SJO^.[  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W nXW]9zC"/  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um ?Lem|zo  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 A}CpyRVCn  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 Lu[xoQ~I  
txix =  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm pW5PF)([  
w_s := 7 um                          ！信号光的半径 yb-/_{Y  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 "uU[I,h  
loss_s := 0                            ！信号光寄生损耗为0 `cqZ;(^  
M(.]?+  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 ++CL0S$e  
yHxi^D]  
; Function for defining themodel:   ！定义模型函数，一定要有calc命令，否则函数只会被定义，但不会被执行 -hKtd3WbT  
calc r'J3\7N!u  
  begin ]Czq A c  
    global allow all;                   ！声明全局变量 9|2LuHQu+  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 *Edr\P  
    add_ring(r_co, N_Tm); [KsVI.gn  
    def_ionsystem();              ！光谱数据函数 C-;}a%c"  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 '?b.t2  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 pjNH0mZ  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 6'JP%~QlS  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 y:dwx*Q9I  
    finish_fiber();                                   Ts 3(,Y  
  end; 0@2pw2{Ru  
!gG\jC~n  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 ~f[91m!+  
show "Outputpowers:"                                   ！输出字符串Output powers： \?NT,t=3J  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） J.pe&1  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） -0:B2B  
'q*:+|"  
UE/N-K)`  
; ------------- +( V+XT  
diagram 1:                   !输出图表1 d5tp w$A  
dWhF[q"  
"Powers vs.Position"          ！图表名称 ai~JY[  
G+l9QaFv  
x: 0, L_f                      ！命令x: 定义x坐标范围 <>K@#|%Y&  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 Y\ G^W8  
y: 0, 15                      ！命令y: 定义y坐标范围 -cnlj  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 l%9nA.M'  
frame          ！frame改变坐标系的设置 :Qklbd[9qF  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） s`"ALn8m  
hx             ！平行于x方向网格 AZadNuL/  
hy              ！平行于y方向网格 ~*uxKEH  
w\3'wD!  
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  kn|z  
  color = red,  ！图形颜色 0 B[eG49  
  width = 3,   ！width线条宽度 kEs=N(  
  "pump"       ！相应的文本字符串标签 Ue0Q| h  
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 k0R;1lZ0n  
  color = blue,     z/t:gc.  
  width = 3, <jRs/?1R  
  "fw signal" Y&_1U/}h  
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 O5p]E7/e  
  color = blue, P1m PC  
  style = fdashed, AAt<{  
  width = 3, ?#X`Eu  
  "bw signal" #] 5|Qhrr+  
g_w4}!|  
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 jZ>'q/  
  yscale = 2,            ！第二个y轴的缩放比例 J#y?^Qm$)<  
  color = magenta, ^NTOZ0x~#  
  width = 3, |d1%N'Ll  
  style = fdashed, $MG. I[h  
  "n2 (%, right scale)" $W;IW$  
U-EX)S^T[{  
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 C&ivjFf  
  yscale = 2, D?_#6i;DJ  
  color = red, |79!exVMBp  
  width = 3, !S',V&Yb  
  style = fdashed, ;{~F7:i  
  "n3 (%, right scale)" md/Z[du:'  
;{inhiySN  
jq&$YmWp  
; ------------- wp,z~raaS  
diagram 2:                    ！输出图表2 VNbq]L(g  
& xqr&(o  
"Variation ofthe Pump Power" s:/.:e_PU  
R`:NUGR  
x: 0, 10 0|:Ic,  
"pump inputpower (W)", @x oa?eK  
y: 0, 10 c#e_Fs  
y2: 0, 100 W+~ w  
frame =7mR#3yt  
hx *<!W k\  
hy xW,(d5RtZ  
legpos 150, 150 VBssn]w  
pstQithS  
f: (set_P_in(pump, x);P_out(signal_fw)), ！set_P_in(pump,x)改变泵浦信道功率；P_out(signal_fw)输出前向信号光 5Ffz^;i  
  step = 5, O/\jkF  
  color = blue, X?.bE!3=  
  width = 3, gH0B[w ]  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 v;;X2 a1k  
  finish set_P_in(pump, P_pump_in) \6Ze H  
E `)p,{T  
f: (set_P_in(pump,x); 100 * n_av(2)),   ！改变泵浦信号功率对能级2上激活粒子占比的影响 UG>OL2m>5  
  yscale = 2, v) q6  
  step = 5, BifA&o%  
  color = magenta, @:xO5L}Io  
  width = 3, WJU` g  
  "population of level 2 (%, rightscale)", S~F:%@,*  
  finish set_P_in(pump, P_pump_in) =D4EPfQn1  
|b/J$.R  
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 2`vCQV  
  yscale = 2, "=<l Pi  
  step = 5, !o4xI?  
  color = red, xM;gF2  
  width = 3, "ngYh]Git$  
  "population of level 3 (%, rightscale)", ('uYA&9  
  finish set_P_in(pump, P_pump_in) ]+ ':=&+:  
.KT+,Y  
A0rdQmrOL  
; ------------- }]zmp/;a  
diagram 3:                         ！输出图表3 S/d})8~.  
G"TPu _g  
"Variation ofthe Fiber Length" Whd4-pR8  
0 \LkJ*i  
x: 0.1, 5 _ |TE )h  
"fiber length(m)", @x uU.9*B=H9  
y: 0, 10 7 Nwi\#o  
"opticalpowers (W)", @y dY\"'LtF  
frame (4 {49b  
hx 9v cUo?/  
hy 9'toj%XQ  
h;4g#|,  
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 u."fJ2}l0X  
  step = 20,             /2dK*v0  
  color = blue, 4Ro(r sO  
  width = 3, L''0`a. +S  
  "signal output" q qzQKN  
a LmVOL{  
;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 mZ;yk(  
   step = 20, color = red, width = 3,"residual pump" 2 J4|7UwJ  
rY!uc!  
! set_L(L_f) {restore the original fiber length } ZVp\ 5V*  
0!vC0T[  
kw-/h+lG  
; ------------- - Ez|  
diagram 4:                                  ！输出图表4 >>$IHz4Z"  
eF8`an5S  
"TransverseProfiles" :LBe{Jbw  
cZ!s/^o?f  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) }=;>T)QmMO  
&YT7>z,  
x: 0, 1.4 * r_co /um CY>NU  
"radialposition (µm)", @x mLk Z4OZ  
y: 0, 1.2 * I_max *cm^2 R ^B2J+O  
"intensity (W/ cm&sup2;)", @y ==XP}w)m  
y2: 0, 1.3 * N_Tm " DlC vjc  
frame [BQw$8 +n_  
hx ooZ-T>$  
hy D`t e|K5  
_).'SU)>  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 Oq[E\8Wn  
  yscale = 2, 4|$D.`Wu  
  color = gray, 68HX,t  
  width = 3, f]'@Vt>  
  maxconnect = 1, 9wq%Fnt  
  "N_dop (right scale)" /5x `TT  
4*+EUJ|  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 Rm*}<JN31  
  color = red, D+SpSO7yg  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 5./ (fgx>  
  width = 3, ?UfZVyHv+  
  "pump" 42wcpSp  
R&4E7wrdP  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 \W}EyA  
  color = blue, `U g.c  
  maxconnect = 1, kH&ZPAI  
  width = 3, poeXi\e!(  
  "signal" 8zc!g|5"  
FvJSJ.;E,  
-1_Z*?=-  
; ------------- Iv<9} )2K  
diagram 5:                                  ！输出图表5 ob00(?;H  
Q jBCkx]g  
"TransitionCross-sections" ltrSTH,kL  
<=inogf  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) T8441qo{>  
7P`1)juA9  
x: 1450, 2050 $dnHUBB  
"wavelength(nm)", @x pMquu&Td  
y: 0, 0.6 )j6>b-H   
"cross-sections(1e-24 m&sup2;)", @y \Zv =?\  
frame 'i(p@m<'  
hx =CVT8(N*  
hy "B}08C,?  
w+37'vQ  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 V`M,d~:Pr"  
  color = red, rl^LS z  
  width = 3, &JlR70gdHi  
  "absorption" NNE,| :  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 cA%U  
  color = blue, VjqdKQeVq  
  width = 3, ]= NYvv>H  
  "emission" LgNNtZ&F  
l1)pr{A  
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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