[原创]RP Fiber Power仿真设计掺铥光纤激光器代码详解 [复制链接]

(* Mm6 (Q  
Demo for program"RP Fiber Power": thulium-doped fiber laser, j,1,;  
pumped at 790 nm. Across-relaxation process allows for efficient 0.@/I}R[  
population of theupper laser level. =_ rn8  
*)            ！（*  *）注释语句 h+Q==  
'|FM|0~-J  
diagram shown: 1,2,3,4,5  ！指定输出图表 tkuN$Jl  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 &)bar.vw/  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 ie$=3nZJ}  
; 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 l>qCT  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 q1?2 U<  
; 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 JWn9&WK  
&0>{mq}p,:  
include"Units.inc"         ！读取“Units.inc”文件中内容 |xf%1(Rl@  
5n9F\T5  
include"Tm-silicate.inc"    ！读取光谱数据 <|2_1[,sl  
-9aht}Z  
; Basic fiberparameters:    ！定义基本光纤参数 3i s.c)  
L_f := 4 { fiberlength }      ！光纤长度 +i)1 jX<  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 F5MWxAS,>  
r_co := 6 um { coreradius }                ！纤芯半径 gsU&}R1*h  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 ax3:rl  

'6xn!dK  
; Parameters of thechannels:                ！定义光信道 QPFpGS{d  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm 0\h2&  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 ,$}Q#q  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W Zy!\=-dSm  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um 5:s]z#8)  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 . }=;]=  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 IsRsjhg8x  
KX9ZwsC0  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm |/<iydP  
w_s := 7 um                          ！信号光的半径 \/$v@5  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 3aDma/  
loss_s := 0                            ！信号光寄生损耗为0 .4^Paxz  
|RjjP 7  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 { j/w3  
ZR#UoYjupb  
; 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 sP+S86 u  
calc ' l!QGKz  
  begin ~z aV.3#  
    global allow all;                   ！声明全局变量 I9u=RIs  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 T4f:0r;^f*  
    add_ring(r_co, N_Tm); #|e<l1F  
    def_ionsystem();              ！光谱数据函数 o3W5FHFAv  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 Hv`Zc*  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 snK9']WXo  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 3$kZu  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 'rF TtT  
    finish_fiber();                                   -#i%4[v  
  end; -~-2 g  
,2cw9?<  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 .6'T;SoK>  
show "Outputpowers:"                                   ！输出字符串Output powers： @+2Zt%  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） ZHF@k'vm/9  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） Mr1pRIYMd  
6@$[x* V  
l%U9g  
; ------------- Z6*RIdD>  
diagram 1:                   !输出图表1 \agC Q&  
cbteNA!
>  
"Powers vs.Position"          ！图表名称 s=d?}.E$  
pE`(kD  
x: 0, L_f                      ！命令x: 定义x坐标范围 {otvJ|'N  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 O^<6`ku  
y: 0, 15                      ！命令y: 定义y坐标范围 [Dt\E4  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 ;zOZu~Q|'  
frame          ！frame改变坐标系的设置 vx4& ;2  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言）  qJK^i.e  
hx             ！平行于x方向网格 +|0m6)J]  
hy              ！平行于y方向网格 6%'{Cq1DE  
LNg1q1P3  
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 dqkkA/1  
  color = red,  ！图形颜色 hlVP_h"z  
  width = 3,   ！width线条宽度 &B.r&K&  
  "pump"       ！相应的文本字符串标签 )N=wJN1  
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 QxkfP%_g  
  color = blue,     %z.G3\s0  
  width = 3, dqe_&C@*O  
  "fw signal" ,S8Vfb &  
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 c]LH.  
  color = blue, ZHBwoC#5}  
  style = fdashed, W`\H3?C`xQ  
  width = 3, yjpjJ  
  "bw signal" z_H2L"Z  
Q,4F=b  
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 sDF J  
  yscale = 2,            ！第二个y轴的缩放比例 63f/-64?7  
  color = magenta, f^]AyU;F:  
  width = 3, \?g%>D:O;  
  style = fdashed, %MIu;u FR  
  "n2 (%, right scale)" 9@j~1G%^  
M&K@><6k,k  
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 \xdt|:8  
  yscale = 2, :X!(^a;]  
  color = red, Q?>#sN,  
  width = 3, Y!`?q8z$G  
  style = fdashed, }/LYI  
  "n3 (%, right scale)" ZJ4"QsF  
%,^7J;  
^d"J
2n,7L  
; ------------- %pt$S~j  
diagram 2:                    ！输出图表2 DYl^6]  
i-<=nD&?t  
"Variation ofthe Pump Power" (kHR$8GFM  
JTI m`t"d=  
x: 0, 10 ^DH*@M  
"pump inputpower (W)", @x sH]AB=_  
y: 0, 10 1D`RR/g&  
y2: 0, 100 wx!*fy4hL  
frame H )}WWXK  
hx WNx^Rg" >'  
hy ArEpH"}@  
legpos 150, 150 !vB%Q$!x  
gB"Tc[l1  
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 I>xB.$A  
  step = 5, EH3G|3^xz  
  color = blue, 0 mQ3P.9  
  width = 3, w?*KO?K  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 yjO7/<2  
  finish set_P_in(pump, P_pump_in) KCFwO'  
o ,!"E^  
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 %8tN$8P  
  yscale = 2, [E^X=+Jnz  
  step = 5, $O>@(K  
  color = magenta, I Q L~I13  
  width = 3, >SJ$41"E  
  "population of level 2 (%, rightscale)", ""+*Gn7^8  
  finish set_P_in(pump, P_pump_in) 3azc`[hl  
e^GW[lT  
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 C{Ug ?hVP  
  yscale = 2, B#MW`
7c  
  step = 5, d{hYT\7~1(  
  color = red, ]aRD6F:L  
  width = 3, S=g-&lK  
  "population of level 3 (%, rightscale)", 5%`Ul  
  finish set_P_in(pump, P_pump_in) J9FNjM[qe  
`Y;gMrp  
c #!6  
; ------------- xdM#>z`;  
diagram 3:                         ！输出图表3 Mh|`XO.5I  
O)|4>J*B  
"Variation ofthe Fiber Length" )r i

3ds  
l{U3;  
x: 0.1, 5 O-5U|wA  
"fiber length(m)", @x @>@Nug2   
y: 0, 10 cQ41NX@I  
"opticalpowers (W)", @y ?<?C*W_  
frame LwPM7S~ *  
hx ewG21 q$  
hy c.Y8CD.tqL  
fti|3c  
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 xUpb1R  
  step = 20,             /&d`c=nH  
  color = blue, yTt (fn:;  
  width = 3, h3EDN:FQ  
  "signal output" _0["J:s9  
j~H`*R=ld#  
;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 <M?#3&5A  
   step = 20, color = red, width = 3,"residual pump" ~ p.W*skD  
"T%'Rp`j|  
! set_L(L_f) {restore the original fiber length } -!>ZATL<B  
%QgAilj,  
|a$w;s>\  
; ------------- eKz~viM'  
diagram 4:                                  ！输出图表4 SWsv,  
(y=o]Vy  
"TransverseProfiles" Ww&- `.  
t/WnDR/fM  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) Q3%# o+R>  
}!<cph  
x: 0, 1.4 * r_co /um W7=_u+0d  
"radialposition (µm)", @x !#:$u=  
y: 0, 1.2 * I_max *cm^2 DIp:S&q2  
"intensity (W/ cm&sup2;)", @y R(83E B~_  
y2: 0, 1.3 * N_Tm d 4\E  
frame y6Epi|8  
hx CPNN!%-  
hy :@`(}5F4  
>X,A
g  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 KbdfSF$  
  yscale = 2, nl9Cdi]o  
  color = gray, ?
< O  
  width = 3, .S'fM]_#  
  maxconnect = 1, UX'NJ1f  
  "N_dop (right scale)" s!/holu  
JX/4=..  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 vZeYp  
  color = red, N3yB1_   
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 tP Efz+1N  
  width = 3, )cK
tc  
  "pump" &<V_[Wh"  
,Q=)$ `%  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 JM-ce8U  
  color = blue, bjPbl2K  
  maxconnect = 1, Rs F3#H  
  width = 3, b({Nf,(a2  
  "signal" ow+Dd[i  
$#7J\=GZ+  
}\939Y  
; ------------- Wbn[Q2h5  
diagram 5:                                  ！输出图表5 8yWu{'G
 
{pe7]P?  
"TransitionCross-sections" uH&,%k9GVK  
,B~lwF9  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) #A/]Vs$  
KM5DYy2 A6  
x: 1450, 2050 : \:~y9X0  
"wavelength(nm)", @x #x5N{8  
y: 0, 0.6 ,t%\0[{/B  
"cross-sections(1e-24 m&sup2;)", @y [CDXCV-z  
frame ?z@v3(b[  
hx ikY]8BCc  
hy C^,4`OI  
(~7m"?  
f: s12_Tm(x * nm) /1e-24,      ！Tm³⁺吸收截面与波长的关系 @4_rxu&  
  color = red, " _:iK]  
  width = 3, >'ksXA4b  
  "absorption" /NW>;J}C  
f: s21_Tm(x * nm) /1e-24,  ！Tm³⁺发射截面与波长的关系 s(
"Cn/ZkS  
  color = blue, A3MZxu=':3  
  width = 3, 3|K=%jr[  
  "emission" QtnM(m  
hC|5e|S  

感谢，视频上有点看不清楚