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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

(* )%H@.;cD_r  
Demo for program"RP Fiber Power": thulium-doped fiber laser, H809gm3(Z  
pumped at 790 nm. Across-relaxation process allows for efficient <=D !/7$ O  
population of theupper laser level. 2 |]pD  
*)            ！（*  *）注释语句 R <Mvwu  
5A^$!q P  
diagram shown: 1,2,3,4,5  ！指定输出图表 YhQ;>Ko  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 j8gw]V/B:  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 i~1bfl   
; 3:"Variation of the Fiber Length"！信号输出功率vs 光纤长度的变化，仿真最佳光纤长度 :K J#_y\rt  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 y*ux7KO  
; 5:"Transition Cross-sections"    ！不同波长的跃迁横截面，横坐标波长，纵坐标为横截面 E d6k7  
rZ[}vU/H`  
include"Units.inc"         ！读取“Units.inc”文件中内容 N_<wiwI<  
k/'>,WE  
include"Tm-silicate.inc"    ！读取光谱数据 9Q)9*nHe  
5ZpU><y  
; Basic fiberparameters:    ！定义基本光纤参数 SbrKNADH%  
L_f := 4 { fiberlength }      ！光纤长度 KYe@2 6   
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 )o4B^kq  
r_co := 6 um { coreradius }                ！纤芯半径 +q*Cw>t /  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度  NW$_w  
]dvNUD   
; Parameters of thechannels:                ！定义光信道 :&59N^So|  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm z#DgoA  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 04npY+1 8%  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W (tY0/s  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um [22>)1<(  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 c_p7vvI&c0  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 Cf&.hod  
ON r}{T%@/  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm `?M?WaP  
w_s := 7 um                          ！信号光的半径 }fqz8'E9  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 4n}tDHvd  
loss_s := 0                            ！信号光寄生损耗为0 M9*#8>  
IZw>!KYG  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 ',>Pz+XKc  
yDl{18~zv  
; 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 E![Ye@w  
calc CRpMpPi@}  
  begin <Sn;k[M}d  
    global allow all;                   ！声明全局变量 ;^yR,32F  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 g+:Go9k!F  
    add_ring(r_co, N_Tm); C~o\Q# *j  
    def_ionsystem();              ！光谱数据函数 o$4xinK  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 ; fOkR+  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 VyF|d? b  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 /);S?7u.  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 ~d.Z. AD  
    finish_fiber();                                   ;kE|Vx  
  end; TAE@KSPvo  
[>MPM$9F-m  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 p$S\l] ,  
show "Outputpowers:"                                   ！输出字符串Output powers： q2SlK8`QJ  
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） IH2V .>h  
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） |``rSEXYs  
+xL*`fn  
4lCEzWo[/  
; ------------- iYPlgt/Y!  
diagram 1:                   !输出图表1 ,JU3 w  
@)^|U"  
"Powers vs.Position"          ！图表名称 AP:(/@K|  
LtK= nK  
x: 0, L_f                      ！命令x: 定义x坐标范围 s+fjQo4  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 C2a2K={  
y: 0, 15                      ！命令y: 定义y坐标范围 }M0GPpv  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 l>t0 H($  
frame          ！frame改变坐标系的设置 q4xP<b^  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） Sy0-tK4  
hx             ！平行于x方向网格 S A\_U::T  
hy              ！平行于y方向网格 [ 11D7L%1t  
\GP0FdpV  
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 +9fQ YJBA  
  color = red,  ！图形颜色 wRj||yay#-  
  width = 3,   ！width线条宽度 s` $YY_  
  "pump"       ！相应的文本字符串标签 {^ jRV@  
f: P(signal_fw, x),  ！P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 l'Kx#y$  
  color = blue,     +qiI;C_P\  
  width = 3, Rk$  
  "fw signal" \r5L7y$9 h  
f: P(signal_bw, x),   ！P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 *u)#yEJ)  
  color = blue, . l>.  
  style = fdashed,  &e%eIz  
  width = 3, t3VZjO  
  "bw signal" `=.A]) >  
k;~*8i=%,\  
f: 100 * n(x, 2),    ！n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 ;4s7\9o  
  yscale = 2,            ！第二个y轴的缩放比例 .Y*jL&!  
  color = magenta, N2Q b+  
  width = 3, pl.x_E,HP  
  style = fdashed, 4R&e5!  
  "n2 (%, right scale)" tVr^1Y  
n5z";:p  
f: 100 * n(x, 3),          ！n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 )/FEjo  
  yscale = 2, E 5N9.t h  
  color = red, j FH wu*  
  width = 3, Wi"3kps q  
  style = fdashed, #!>QXiyR  
  "n3 (%, right scale)" 87p tab@  
y8Oz4|  
ai$s  
; ------------- ? \p,s-CR:  
diagram 2:                    ！输出图表2 9 .3?$(  
Lyy:G9OV  
"Variation ofthe Pump Power" /$=<RUE  
mrGfu:r  
x: 0, 10 ^$x1~}D  
"pump inputpower (W)", @x -A(]U"@n  
y: 0, 10 M=t;t0  
y2: 0, 100 <HXzcWQ$  
frame ?d5_{*]+v  
hx bqcwZ6r<  
hy *Kmo1>^  
legpos 150, 150 y.,li<  
0 ~^l*  
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 =EQaZ8k  
  step = 5, n>L24rL  
  color = blue, (4Ha'uqz  
  width = 3, MnB Hm!]&  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 xDO1gnH%  
  finish set_P_in(pump, P_pump_in) z`2Ais@ao  
SG{&2G  
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 du>d?  
  yscale = 2, |576)  
  step = 5, G @8wv J  
  color = magenta, 3,dIW*<**  
  width = 3, g..&x]aS(  
  "population of level 2 (%, rightscale)", #p7_\+&5s  
  finish set_P_in(pump, P_pump_in) Tr$37suF  
y*vg9`$k  
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 w@i;<LY.  
  yscale = 2, f =kt0  
  step = 5, 9|x{z  
  color = red, R&@NFin  
  width = 3, N D1'XCN  
  "population of level 3 (%, rightscale)", :)j& t>aP  
  finish set_P_in(pump, P_pump_in) Nf1&UgX  
kB]?95>Wx  
@s8wYcW  
; ------------- #]}]ZE  
diagram 3:                         ！输出图表3 }@<Ru  
m* rw?nLZ  
"Variation ofthe Fiber Length" 5$%CRm  
/ULO#CN?;  
x: 0.1, 5  E-L>.tD  
"fiber length(m)", @x n|Gw?@CU7  
y: 0, 10 ,nGZ( EBD  
"opticalpowers (W)", @y evro]&N{  
frame 8ps1Q2|  
hx :IRQouTf:,  
hy W&p f%?  
l *]nvd_  
f: (set_L(x);P_out(signal_fw)),     ！改变光纤长度对信号光输出功率的影响  G4{TJ,~  
  step = 20,             jU!ibs}R3  
  color = blue, >gZ"^iW  
  width = 3, ?V$@2vBVX4  
  "signal output" 6(-c$d`C.0  
XT{o ]S~nq  
;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 #|;;>YnZ   
   step = 20, color = red, width = 3,"residual pump" ;s!GpO7+  
a @i?E0Fr  
! set_L(L_f) {restore the original fiber length } yq,%<%+  
}ZkGH}K_}  
)@E'yHYO>  
; ------------- g<s;uRA4O9  
diagram 4:                                  ！输出图表4 7~2V5 @{<  
*$9Rb2}kK  
"TransverseProfiles" =aCd,4B}  
=fcRH:B:  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) R:Tv'I1-L  
Oz4yUR  
x: 0, 1.4 * r_co /um (/gMtIw  
"radialposition (µm)", @x ~5 e 1&  
y: 0, 1.2 * I_max *cm^2 G[s/M\l  
"intensity (W/ cm&sup2;)", @y *#c^.4$'  
y2: 0, 1.3 * N_Tm ?Suv.!wfLl  
frame x_OZdI  
hx &n9 srs  
hy 0uhIJc'2  
by* v($  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 jOU1F1  
  yscale = 2, *(j -jbA  
  color = gray, h45RwQ5Z  
  width = 3, Dt Ry%fA_  
  maxconnect = 1, \5R>+[n!  
  "N_dop (right scale)" %)PQomn?  
Qvm[2mb  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 ({9P, D~2  
  color = red, Yy4l -}"  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 a.B<W9$`  
  width = 3, Ahrtl6@AS  
  "pump" [J+]1hCZ|  
jU_#-<'r  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 mcLxX'c6<h  
  color = blue, W kSv@Y,  
  maxconnect = 1, [K#pU:lTH  
  width = 3, U_1N*XK6$  
  "signal" apd"p{  
c%x.cbu>  
am# (ms  
; ------------- L0>w|LpRc  
diagram 5:                                  ！输出图表5 7oFA5T _  
u\P)x~-TM  
"TransitionCross-sections" cDqj&:$e  
[eZ'h8  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) _VI3b$  
06fs,!Q@  
x: 1450, 2050 TTm  
"wavelength(nm)", @x UVaz,bXla  
y: 0, 0.6 !)h?2#V8;  
"cross-sections(1e-24 m&sup2;)", @y O*-sSf   
frame \aB"D=P\ok  
hx i=j4Wg,{J  
hy *&vi3#ur  
'QxPQ cU  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 g0"KC X  
  color = red, eW zyydl  
  width = 3, ]-tAgNzl%  
  "absorption" rK r2 K'  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 >TddKR @C  
  color = blue, E K#ib  
  width = 3,  9Li.B1j  
  "emission" (]*!`(_b  
\X0wr%I  
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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