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

(* C^ ~[b o  
Demo for program"RP Fiber Power": thulium-doped fiber laser, -D_xA10  
pumped at 790 nm. Across-relaxation process allows for efficient RWGAxq`9f  
population of theupper laser level. Lyjp  
*)            ！（*  *）注释语句 "
,"to  
Rap_1o9#\  
diagram shown: 1,2,3,4,5  ！指定输出图表 "Qe2U(U
n  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 ~H626vT37  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 Qy'
-3GB  
; 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 &c81q2  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 8-Z|$F"  
; 5:"Transition Cross-sections"    ！不同波长的跃迁横截面，横坐标波长，纵坐标为横截面 -$f$z(h  
\r\wqz7  
include"Units.inc"         ！读取“Units.inc”文件中内容 =#?=Lh  
IOH6h=  
include"Tm-silicate.inc"    ！读取光谱数据 aN"dk-eK  
T'%Rkag>  
; Basic fiberparameters:    ！定义基本光纤参数 +?C7(-U>  
L_f := 4 { fiberlength }      ！光纤长度 2D
{`AJ  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 2,'%G\QT  
r_co := 6 um { coreradius }                ！纤芯半径 U0dhr;l  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 yxy~N\0  
^A t,x  
; Parameters of thechannels:                ！定义光信道 9Qc=D
"'  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm _I#a`G  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 o:RO(oA0?  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W y6Ea_v  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um (fC U+  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 A}0u-W  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 .v#Tj|w^  
+C`zI~8  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm )9V8&,  
w_s := 7 um                          ！信号光的半径 `g,i`<  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 e\H1

IR3  
loss_s := 0                            ！信号光寄生损耗为0 '<hgc  

]iH~1[  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 jsIT{a*]  
0"xD>ue&  
; 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 SQI =D8  
calc d
2<+Pp  
  begin A!aki}aT~  
    global allow all;                   ！声明全局变量 rPoq~p
[Y  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 1H7bPl|  
    add_ring(r_co, N_Tm); %9`\7h7K  
    def_ionsystem();              ！光谱数据函数 (p}N cn.  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 xw~&OF&  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 @"B
kLF
 
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 jR mo9Bb2  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 [|oOP$u  
    finish_fiber();                                   ~#9(Q  
  end; C_V5.6T!  
4j-%I
7  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 fdzaM&  
show "Outputpowers:"                                   ！输出字符串Output powers： =
sh]H$  
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） JI[9c,N  
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） CJ
[^Fi?CH  
j<_)Y(x>  
'645Fr[lg  
; ------------- DzG$\%G2R}  
diagram 1:                   !输出图表1 )W$@phY(I  
./E<v  
"Powers vs.Position"          ！图表名称 5jK9cF$>  
5SwQ9#  
x: 0, L_f                      ！命令x: 定义x坐标范围 >`D$Jz,  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 CC{{@  
y: 0, 15                      ！命令y: 定义y坐标范围 ?<eH!MHF  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 n*vhCeL  
frame          ！frame改变坐标系的设置 j\@osjUu  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） QB#rf='  
hx             ！平行于x方向网格 }Jk=ZBVjT7  
hy              ！平行于y方向网格 *WZ?C|6+  
ub=Bz1._  
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 QAKA3{-(  
  color = red,  ！图形颜色 Sv|jR r'  
  width = 3,   ！width线条宽度 n~G-X  
  "pump"       ！相应的文本字符串标签 p+O,C{^f  
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 0N4+6k|  
  color = blue,     @}iY(-V  
  width = 3, jp P'{mc  
  "fw signal" b;Uqyc  
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 qr_:zXsob_  
  color = blue, EiWsVic[  
  style = fdashed, c:sk1I,d~^  
  width = 3, a<mM )[U  
  "bw signal" )NL_)
)\  
C9%2}E3Z$)  
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 qQx5n  
  yscale = 2,            ！第二个y轴的缩放比例 Z2hIoCT  
  color = magenta, |sklY0?l(  
  width = 3, ?_Y2'O  
  style = fdashed, 6=i@ttAK  
  "n2 (%, right scale)" a C<  
9a lMC  
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 R`!'c(V  
  yscale = 2, !Xf7RT  
  color = red, ]9/{  
  width = 3, \rY<DxtOq  
  style = fdashed, sDzlNMr?P+  
  "n3 (%, right scale)" fPu,@ L  
"fX9bh^  
$@Fvl-lK  
; ------------- z]O,Vqpl?  
diagram 2:                    ！输出图表2 NoG`J$D  
H_<hZUB  
"Variation ofthe Pump Power" tX *}l|;(  
{m
2lVzK  
x: 0, 10 F1UTj"
<e  
"pump inputpower (W)", @x STY\c5  
y: 0, 10 I-?Dil3  
y2: 0, 100 dpWBY3(7a  
frame !<I3^q  
hx rLzN#Zoi  
hy /agX! E4s  
legpos 150, 150 oD>j26Q  
iF1E 5{dH  
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 3ZEV*=+T5  
  step = 5, kz+OUA@~  
  color = blue, ^
wm>\o;  
  width = 3, :M'V**A(  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 ~Dz
`O"X3  
  finish set_P_in(pump, P_pump_in) p{BBqKv  
%qj8*1  
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 g8^YDrH  
  yscale = 2, DEcsFC/SK  
  step = 5, Rx>>0%e.  
  color = magenta, \vQjTM-7  
  width = 3, eH9Ofhsry  
  "population of level 2 (%, rightscale)",
BQTibd  
  finish set_P_in(pump, P_pump_in) vq&u19iP  
JTn\
NSa  
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 [TFd|ywn  
  yscale = 2, !?u{2D  
  step = 5, mqFo`Ee  
  color = red, l[D5JnWxt  
  width = 3, C
_~hX G  
  "population of level 3 (%, rightscale)", +^\TG>le  
  finish set_P_in(pump, P_pump_in) 1<ic 5kB  
edv&!  
uO,9h0y0W  
; ------------- jjLwHJ  
diagram 3:                         ！输出图表3 $xl>YYEBMH  
cB ,l=/?  
"Variation ofthe Fiber Length" [)E.T,fjMQ  
9< $n'g  
x: 0.1, 5  l,n V*Z  
"fiber length(m)", @x 2l#c?]TA  
y: 0, 10 f,_EPh>  
"opticalpowers (W)", @y Z:2a_Atm  
frame 6pCQP c*A  
hx ~Os1ir.  
hy Arz
yq_ Yk  
~dFdO7  
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 {hmC=j  
  step = 20,             ZWH9E.uj  
  color = blue, lPywrTG0  
  width = 3, s.p4+KJ  
  "signal output" n8dJ6"L<"  
#2~-I  
;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 AsOkOS3  
   step = 20, color = red, width = 3,"residual pump" -J<{NF  
}+{? Ms  
! set_L(L_f) {restore the original fiber length } BS_ 3|  
+nj 2  
^-&BGQM  
; ------------- K_" denzT+  
diagram 4:                                  ！输出图表4 \=yWJ  
g]V_)}
 
"TransverseProfiles" kU {>hG4  
{Hu@|Q\~&  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) K#e&yY  
2`?58&  
x: 0, 1.4 * r_co /um k)t_U3i  
"radialposition (µm)", @x oN
\IQ7oI  
y: 0, 1.2 * I_max *cm^2 h'tb  
"intensity (W/ cm&sup2;)", @y Ww[Xqmg  
y2: 0, 1.3 * N_Tm ruKm_j#J  
frame P~H
?[ ;  
hx b-+~D9U<  
hy MN.h,^b  
%\|9_=9Wn  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 Sz_{#-  
  yscale = 2, Lxg,BZV  
  color = gray, ;tZ;C(;
<  
  width = 3, |K(2_Wp  
  maxconnect = 1, 1[g -f,  
  "N_dop (right scale)" U_8 Z&  
5x=aJl;G  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 E<~Fi.M;\  
  color = red, 8?za&v  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 j^Vr!y  
  width = 3, T{"[Ih3Mbl  
  "pump" 3hi0  
:"~SKJm  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 \{8?HjJEM  
  color = blue, _-M27^\vV  
  maxconnect = 1, `+\6;nM  
  width = 3, z[0+9=<Y  
  "signal" P5K
=S.g  
cUH.^_a  
l@irAtg4  
; ------------- QCD MRh n  
diagram 5:                                  ！输出图表5 aW
CZ1F  
n?[JPG2X  
"TransitionCross-sections" tpY]Mz[J  
$5]}]  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) [B,w\PLub  
UD!-.I]  
x: 1450, 2050 ){I0  
"wavelength(nm)", @x H:k?#7D(  
y: 0, 0.6 [qL{w&R  
"cross-sections(1e-24 m&sup2;)", @y kF@Z4MB}yr  
frame ^xt@  
hx y v58~w*"  
hy 2A95vC'u>|  
44x+2@&1  
f: s12_Tm(x * nm) /1e-24,      ！Tm³⁺吸收截面与波长的关系 &}y?Lt  
  color = red, a$
AR  
  width = 3, V'q?+p] a  
  "absorption" 28! ke  
f: s21_Tm(x * nm) /1e-24,  ！Tm³⁺发射截面与波长的关系 [pRRBMho  
  color = blue, z8@[]6cW  
  width = 3, v:1DNR4  
  "emission"  Nt w?~%  
V"Sa9P{y"  

感谢，视频上有点看不清楚