首页 -> 登录 -> 注册 -> 回复主题 -> 发表主题
光行天下 -> OptiSystem,PhotonDesign,Rsoft -> RP Fiber Power仿真设计掺铥光纤激光器代码详解 [点此返回论坛查看本帖完整版本] [打印本页]

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

(* uZjC c M  
Demo for program"RP Fiber Power": thulium-doped fiber laser, 30j|D3-  
pumped at 790 nm. Across-relaxation process allows for efficient i'/m4 !>h  
population of theupper laser level. #;KsJb)N.  
*)            ！（*  *）注释语句 W&Y"K)`  
{tP%epQ  
diagram shown: 1,2,3,4,5  ！指定输出图表 ?9+@+q  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 E>jh"|f:{  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 32)tJ|m  
; 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 = "ts`>  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 q>!L6h5]t  
; 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 .d<W`%[  
r),PtI0X  
include"Units.inc"         ！读取“Units.inc”文件中内容 }ut]\]b  
7*o*6,/  
include"Tm-silicate.inc"    ！读取光谱数据 pL1i|O  
: esg(  
; Basic fiberparameters:    ！定义基本光纤参数 [tT8_}v$LN  
L_f := 4 { fiberlength }      ！光纤长度 RBKOM$7  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 Ka!I`Yf  
r_co := 6 um { coreradius }                ！纤芯半径 -T@`hk`  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 S^I,Iz+`S'  
Nh?| RE0t  
; Parameters of thechannels:                ！定义光信道 uYI@ 9U  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm )Q;978:  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 PG%0yv%  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W w0m^ &,;#  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um ed 59B)?l  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 DPgm%Xq9(!  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 )}v 3q6?_  
-;(Q1)&  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm e0,'+;*=g  
w_s := 7 um                          ！信号光的半径 ,Z9>h[JF  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 j1$8#/r;c  
loss_s := 0                            ！信号光寄生损耗为0 7u.|XmUz  
;E;To\NCYF  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 ]w).8=I  
zSTR^sgJ  
; 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 Pf_F59"  
calc `bI)<B  
  begin Lz9#A.  
    global allow all;                   ！声明全局变量 l*aj#%ha  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 Z [Xa%~5>5  
    add_ring(r_co, N_Tm); +YY8h>hj  
    def_ionsystem();              ！光谱数据函数  cc=gCE  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 "bQ[CD  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 klOp ^w  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 CBT>"sYE1  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 km5~Gc}  
    finish_fiber();                                   %y[1H5)3<  
  end; NUJ~YWO;  
$& ~;@*[  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 r{Rg920  
show "Outputpowers:"                                   ！输出字符串Output powers： )emOKS  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） tq50fq'  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） 4'pS*v  
W`rNBfG>  
[dX`K`k  
; ------------- *4Fr&^M\  
diagram 1:                   !输出图表1 mABe'"8  
 l]!9$  
"Powers vs.Position"          ！图表名称 FN[R(SLbL  
-<_$m6x"A  
x: 0, L_f                      ！命令x: 定义x坐标范围 N^0uit  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 ~i;fDQ&!  
y: 0, 15                      ！命令y: 定义y坐标范围 Gi6T["  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 J'&# mDU  
frame          ！frame改变坐标系的设置 .0HZNWRtb  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） h~Q)Uy5N(D  
hx             ！平行于x方向网格 {U!St@  
hy              ！平行于y方向网格 \$*$='6"  
KLQTKMNv  
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 *!e(A ]&  
  color = red,  ！图形颜色 )U<Y0bZA!  
  width = 3,   ！width线条宽度 &F$:Q:* *  
  "pump"       ！相应的文本字符串标签 X~.f7Ao[  
f: P(signal_fw, x),  ！P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 :VmHfOO  
  color = blue,     8[%Ao/m  
  width = 3, ;!@EixN-YH  
  "fw signal" #%3rTU  
f: P(signal_bw, x),   ！P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 -ZOBAG*  
  color = blue, hv$yV%.`  
  style = fdashed, 4A`NJ  
  width = 3, H( ^bC5'  
  "bw signal" \[2lvft!  
wmr-}Y!9u%  
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 *~$~yM/~3U  
  yscale = 2,            ！第二个y轴的缩放比例 @+,pN6}g  
  color = magenta, SU_SU".  
  width = 3, w2(guL($  
  style = fdashed, ^,Ydr~|T  
  "n2 (%, right scale)" .4.pJbOg  
cF T 9Lnz  
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 lt'I,Xt  
  yscale = 2, cFd > oDS  
  color = red, oSb, :^Wl  
  width = 3, L?&'xzt B  
  style = fdashed, XkKC!  
  "n3 (%, right scale)" _#$9 y1bd  
{[Q0qi =  
hmbj*8  
; ------------- \6|/RFT  
diagram 2:                    ！输出图表2 M<?Q4a'Q  
;+"f  
"Variation ofthe Pump Power" woH)0v  
5wtTP ;P  
x: 0, 10 5m$2Ku  
"pump inputpower (W)", @x v *hRz;  
y: 0, 10 {2'm^0Kl  
y2: 0, 100  Wa/g`}  
frame DR9: _  
hx =V+I=rqo  
hy /BKe+]dS*  
legpos 150, 150 ("7M b{  
_,h@:Xij  
f: (set_P_in(pump, x);P_out(signal_fw)), ！set_P_in(pump,x)改变泵浦信道功率；P_out(signal_fw)输出前向信号光 <S"~vKD'  
  step = 5, mo]KCi  
  color = blue, "7%:sty  
  width = 3, JeH;v0  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 vy@rQC %9  
  finish set_P_in(pump, P_pump_in) v"u^M-_  
?^Hf Np9  
f: (set_P_in(pump,x); 100 * n_av(2)),   ！改变泵浦信号功率对能级2上激活粒子占比的影响 nCg66-3A  
  yscale = 2, XdgUqQb}  
  step = 5, lw%?z/HDf  
  color = magenta, [}mA`5  
  width = 3, "GT4s?6O  
  "population of level 2 (%, rightscale)", 9e!NOl\_;.  
  finish set_P_in(pump, P_pump_in) =x#FbvV  
)+I.|5g  
f: (set_P_in(pump,x); 100 * n_av(3)),   ！改变泵浦信号功率对能级3上激活粒子占比的影响 46jh-4) <  
  yscale = 2, n ?[/ufl  
  step = 5, -XoPia2  
  color = red, }SyxPXs  
  width = 3, Die-@z|Y  
  "population of level 3 (%, rightscale)", W><Zn=G4)b  
  finish set_P_in(pump, P_pump_in) w [>;a.$  
qgt[~i*  
JD>d\z2QC  
; ------------- ,n,RFa  
diagram 3:                         ！输出图表3 |8_JY2 R  
C z#Z<:  
"Variation ofthe Fiber Length" %9C@ Xl  
;d.K_P  
x: 0.1, 5 !X >=l  
"fiber length(m)", @x 4\t1mocCSN  
y: 0, 10 9D\4n  
"opticalpowers (W)", @y AT Zhr. H  
frame co4h*?q  
hx vEM(bT=H  
hy wJb#g0  
ewNz%_2  
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 bte~c  
  step = 20,             .@ C{3$,VG  
  color = blue, zZ-wG  
  width = 3, +KGZ HO!  
  "signal output" .k{ j]{k  
Yx'res4e  
;f: (set_L(x);P_out(pump)),                     ！改变光纤长度对泵浦信号输出功率的影响 8$N8}q%  
   step = 20, color = red, width = 3,"residual pump" z(uZF3  
O^>jdl!TZ  
! set_L(L_f) {restore the original fiber length } wle@v Cmr  
Gnm4gF!BI  
WnFG{S{s  
; ------------- $S*4r&8ZD  
diagram 4:                                  ！输出图表4 K[\'"HyQ,X  
:m=m}3/:  
"TransverseProfiles" W) j|rz.  
`pZs T ^G[  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) $5`!Z%>/  
V+-$ jOh  
x: 0, 1.4 * r_co /um j Ib  
"radialposition (µm)", @x {MAQ/5  
y: 0, 1.2 * I_max *cm^2 Vpfp}pL  
"intensity (W/ cm&sup2;)", @y EY`H}S!xy  
y2: 0, 1.3 * N_Tm 9ILIEm:  
frame :^ i9]  
hx O[17";P  
hy ~d{.ng 4K  
:R6bq!  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 SDG-~(Y  
  yscale = 2, ?8dVH2W.  
  color = gray, fqz28aHh  
  width = 3, ub0zJTFJ#  
  maxconnect = 1, Mkp/0|Q*  
  "N_dop (right scale)" +,+vkpL-%  
%HQ.|  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 ;T]d M fO  
  color = red, _fFU#k:MU  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 z><5R|Gf  
  width = 3, b/$km?R  
  "pump" X C86-b)E  
$VG*q  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 |XYEn7^r  
  color = blue, y #f QPR  
  maxconnect = 1, =M6[URZ  
  width = 3, Z!d7&T}  
  "signal" D8{D [fJ;  
q:>^ "P{  
5/",<1  
; -------------  9DQ)cy  
diagram 5:                                  ！输出图表5 Op.8a`XLt&  
D\~zS`}  
"TransitionCross-sections" c97{Pu  
uxn)R#?  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) )'4P.>!!aQ  
%OR|^M  
x: 1450, 2050 ;?fS(Vz~  
"wavelength(nm)", @x uy_wp^  
y: 0, 0.6 seFGJfN\?f  
"cross-sections(1e-24 m&sup2;)", @y &hHW3Q(1  
frame {3a&1'a0g  
hx 3gWvmep1  
hy ,ea^,H6  
iq#b#PYA  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 sRVIH A ,  
  color = red, R;whW:Tx  
  width = 3, BC>=B@H0  
  "absorption" |rw%FM{F  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 iO /XhSD  
  color = blue, gbOpj3  
  width = 3, V~DMtB7  
  "emission" ^Jp&H\gI.  
V!%jf:k  
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 --]

Copyright © 2005-2025 光行天下 蜀ICP备06003254号-1 网站统计