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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

(* !idVF!xG  
Demo for program"RP Fiber Power": thulium-doped fiber laser, ohx$;j  
pumped at 790 nm. Across-relaxation process allows for efficient H<fi,"X^  
population of theupper laser level. 2bw) , W  
*)            ！（*  *）注释语句 .-T P 1C  
Zazs".  
diagram shown: 1,2,3,4,5  ！指定输出图表 Z:AB (c  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 R\7r!38  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 x"C7NW[$  
; 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 B[7,Hy,R  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 j5:4/vD  
; 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 Z&iW1  
Ut'T!RD  
include"Units.inc"         ！读取“Units.inc”文件中内容 { ?jXPf  
yl@Nyu  
include"Tm-silicate.inc"    ！读取光谱数据 LprGsqr:  
(n>Gi;u(R  
; Basic fiberparameters:    ！定义基本光纤参数 $)KODI>|  
L_f := 4 { fiberlength }      ！光纤长度 N3\RXXY  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 6S{F4v2/0  
r_co := 6 um { coreradius }                ！纤芯半径 wL:7G  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 oGI'a:iff  
d(^HO~p  
; Parameters of thechannels:                ！定义光信道 fDW:|%{Y,  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm >\:GFD{z  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 b3[!1i  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W :5j+^/   
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um Dbi ^%  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 v,QvCozOz  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 "HqmS  
j-**\.4a~  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm 7 qn=W  
w_s := 7 um                          ！信号光的半径 w[ 3a^  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布  03zt^<  
loss_s := 0                            ！信号光寄生损耗为0 ??.aLeF&  
|X XO0  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 rloxM~7!,)  
W,yLGz\  
; Function for defining themodel:   ！定义模型函数，一定要有calc命令，否则函数只会被定义，但不会被执行 Hq<4G:#  
calc y!x[N!a  
  begin jwLZC  
    global allow all;                   ！声明全局变量 a;IOL  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 q&9]4j  
    add_ring(r_co, N_Tm); lo6upir ZX  
    def_ionsystem();              ！光谱数据函数 I9xu3izAmR  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 >iK LC  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 `~VL&o1>  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 3[_WTwX0  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 eE .wnn  
    finish_fiber();                                   3$P  
  end; &XI9%h9|  
:XAyMK7   
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 o(?9vU  
show "Outputpowers:"                                   ！输出字符串Output powers： T;{}bc&I  
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） gq*W 0S  
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） V6c8o2G;+  
:a2[d1  
w;Fy/XQ  
; ------------- toD!RE  
diagram 1:                   !输出图表1 [Rq|;p  
ONpvx5'#  
"Powers vs.Position"          ！图表名称 @Z#h?:  
~rjK*_3/  
x: 0, L_f                      ！命令x: 定义x坐标范围 gn.)_  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 ZRw^< +  
y: 0, 15                      ！命令y: 定义y坐标范围 WEG!;XZ  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 GoX<d{  
frame          ！frame改变坐标系的设置 8tjWVo  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） _D{FQRU<YD  
hx             ！平行于x方向网格 ) Kl@dj  
hy              ！平行于y方向网格 v)|a}5={  
reYIF*  
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 @C[p?ak  
  color = red,  ！图形颜色 daSx^/$R  
  width = 3,   ！width线条宽度 Wql=PqF  
  "pump"       ！相应的文本字符串标签 bcu Uej:  
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 Z]2z*XD  
  color = blue,     Yg&/^  
  width = 3, Z vC?F=tH  
  "fw signal" JS\]|~Gd  
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 jJvd!,=)  
  color = blue, @Q nKaZ8jW  
  style = fdashed, 99'c\[fd'  
  width = 3, Ywt9^M|z;  
  "bw signal" doX`NbA  
,+v(?5[6  
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 KkzG#'I1  
  yscale = 2,            ！第二个y轴的缩放比例 \0;w7tdo  
  color = magenta, z,dF Dl$  
  width = 3, "9Q_lVI|Q  
  style = fdashed, %M8Q6  
  "n2 (%, right scale)" OaoHN& "  
]0(ZlpT  
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 S_??G:i  
  yscale = 2, M1 o@v0  
  color = red, @_c&lToj_  
  width = 3, mxJe\[I  
  style = fdashed, ;F%EW`7  
  "n3 (%, right scale)" xi ,fm  
h5aPRPUg  
n ^qwE  
; ------------- i~<.@&vt  
diagram 2:                    ！输出图表2 V5 9Vf[i|  
wXdt\@Qr  
"Variation ofthe Pump Power" \7$"i5  
xa?auv!  
x: 0, 10 9 MQwc  
"pump inputpower (W)", @x 4pcIH5)z  
y: 0, 10 (&V*~OR  
y2: 0, 100 Lew 2Z  
frame UIIsgNca  
hx L KZ<\% X  
hy 1Zo3K<*J  
legpos 150, 150 C\{hN  
n1R{[\ >1  
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 R Eo{E  
  step = 5, 37tJ6R6[  
  color = blue, .]<iRf[\[  
  width = 3, mL;oR4{  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 j#p3<V S4  
  finish set_P_in(pump, P_pump_in) s{Y-Vdx  
:Us+u-~  
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 x @9rc,by  
  yscale = 2, Ts=TaRwWf  
  step = 5, hHOx ]  
  color = magenta, F 6+4Yy+  
  width = 3, zY4y]k8D*  
  "population of level 2 (%, rightscale)", &wkb r2P  
  finish set_P_in(pump, P_pump_in) ,^v_gc  
W ,]Ua]  
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 K}whqe]j  
  yscale = 2, &t6SI'  
  step = 5, ,K&L/*  
  color = red, v.,D,6qZ  
  width = 3, ~Hx>yn94e  
  "population of level 3 (%, rightscale)", nx{X^oc8e  
  finish set_P_in(pump, P_pump_in) Z)u_2e  
i~4$V  
8KdcU [w]  
; ------------- $c+:dO|Fb  
diagram 3:                         ！输出图表3 \K Kt& bKL  
BGu<1$ G  
"Variation ofthe Fiber Length" "%rU1/@#  
THCvcU?X  
x: 0.1, 5 Gch3|e  
"fiber length(m)", @x 3 }#rg  
y: 0, 10 uCWBM  
"opticalpowers (W)", @y /}d)g4\j  
frame _.W;hf`  
hx %;GRR (K  
hy 2ryg3% +O  
jnFN{(VH  
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 `yRt?UQRS  
  step = 20,             mJVru0  
  color = blue, ZJjm r,1  
  width = 3, s|:j~>53  
  "signal output" eFQz G+/  
wu} Zu  
;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 AC?a:{ ./  
   step = 20, color = red, width = 3,"residual pump" }[;r-5}  
Qb86*  
! set_L(L_f) {restore the original fiber length } oPF n`8dQ  
2kFP;7FO  
--7@rxv  
; ------------- ;s$ P?('  
diagram 4:                                  ！输出图表4 ^|cax| >  
9N<TJp,q  
"TransverseProfiles"  I$fm"N  
kNrd=s,-]D  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) `;s#/`c|/  
{'+.?g  
x: 0, 1.4 * r_co /um #<-%%  
"radialposition (µm)", @x reNUIDt/c  
y: 0, 1.2 * I_max *cm^2 FaG&U  
"intensity (W/ cm&sup2;)", @y *OY Nx4k  
y2: 0, 1.3 * N_Tm xl(R|D))  
frame z{U^j:A  
hx ;![rwra  
hy !~}@Eoii4  
,e*WJh8k[  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 msZ 3%L  
  yscale = 2, i6:O9Km  
  color = gray, MeO2 cy!5q  
  width = 3, WG5)-;>q|  
  maxconnect = 1, 9%?a\#C  
  "N_dop (right scale)" )gxZ &n6  
m*>gG{3;  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 Qf@ha  
  color = red, W ;P8'_2Y  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 '=ydU+X  
  width = 3, x0dBg~I  
  "pump" 6J3<k(#:  
$69d9g8-(!  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 _6\"U5*Y  
  color = blue, "Q1oSpF  
  maxconnect = 1, /+?eSgM/  
  width = 3, R9~c: A4G  
  "signal" +!-U+W  
(U|WP%IM'  
AZbFj-^4  
; ------------- 1Zgv+.  
diagram 5:                                  ！输出图表5 ;fm> \f  
aydf# [F  
"TransitionCross-sections" :i o[9B [  
?; tz  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) ,+'VQa"]  
/}3I:aJwb  
x: 1450, 2050 FN D+Ok&  
"wavelength(nm)", @x f2i9UZ$=e!  
y: 0, 0.6 Vx=tP.BO]  
"cross-sections(1e-24 m&sup2;)", @y 6oq/\D$6~  
frame ##yH*{/&  
hx 3 E!F8GZ  
hy ,egbU (:l  
n wO5<b;  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 b'(Hwc\ t  
  color = red, 2;ac&j1  
  width = 3, `_<O _  
  "absorption" 8} |!p>  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 ?l ](RI  
  color = blue, oSkvTK$ &i  
  width = 3, 9_J'P2e  
  "emission" (iu IeJ^Z  
ZE6W"pbjU  
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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