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

(* -]8cw#y 0A  
Demo for program"RP Fiber Power": thulium-doped fiber laser, 5Ym/'eT  
pumped at 790 nm. Across-relaxation process allows for efficient _ _x2xtrH  
population of theupper laser level. lPcp 17U  
*)            ！（*  *）注释语句 e[txJ*SuO  
X$"=\p>X  
diagram shown: 1,2,3,4,5  ！指定输出图表 h\+U+ ?u  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 l=(4o4um  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 bWc3a  
; 3:"Variation of the Fiber Length"！信号输出功率vs 光纤长度的变化，仿真最佳光纤长度 H JFt{tq2  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 K-D{Z7J^l  
; 5:"Transition Cross-sections"    ！不同波长的跃迁横截面，横坐标波长，纵坐标为横截面 rn1^6qy)  
.j*muDVQn  
include"Units.inc"         ！读取“Units.inc”文件中内容 4;G:.k!K  
+T}:GBwD7  
include"Tm-silicate.inc"    ！读取光谱数据 L2"fO  
h-0sDt pR  
; Basic fiberparameters:    ！定义基本光纤参数 #BA=?7  
L_f := 4 { fiberlength }      ！光纤长度 SM>V o+  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 Yh`P+L  
r_co := 6 um { coreradius }                ！纤芯半径 |\g=ua+h  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 t*<@>]k  
pk&kJ307  
; Parameters of thechannels:                ！定义光信道 d*7nz=0&$  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm eKd F-;  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 =nQ"ye  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W @ 2r9JqR[=  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um Cx>iSx  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 >Mml+4<5  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 oj.f uJD  
p4m9@ \gn  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm F:"CaDk  
w_s := 7 um                          ！信号光的半径 j^DoILw  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 0fgt2gA33  
loss_s := 0                            ！信号光寄生损耗为0 *P4G}9B|9:  
y,$kU1yH7  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 !acm@"Ea  
9NCo0!Fb  
; Function for defining themodel:   ！定义模型函数，一定要有calc命令，否则函数只会被定义，但不会被执行 a]NQlsE}l  
calc U=_O*n?N-d  
  begin g'G"`)~ 2  
    global allow all;                   ！声明全局变量 ICSi<V[y1  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 xE/r:D#  
    add_ring(r_co, N_Tm); b&k !DeE  
    def_ionsystem();              ！光谱数据函数 7CfHL;+m<4  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 JA!O,4  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 B j!{JcM-^  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 .ztO._J7f  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 5mNd5IM  
    finish_fiber();                                   g70B22!y  
  end; ve|:z  
YVy+1q[  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 5a moK7  
show "Outputpowers:"                                   ！输出字符串Output powers： N*.JQvbnr  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） #R&D gt  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） iN\D`9e  
eil"1$k  
?+Sjt  
; ------------- qaK9E@l  
diagram 1:                   !输出图表1 --SlxV/x  
NUVFG;  
"Powers vs.Position"          ！图表名称 J!sIxwF  
h+o-h4X  
x: 0, L_f                      ！命令x: 定义x坐标范围 _~m@ SI  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 `9;:mR $  
y: 0, 15                      ！命令y: 定义y坐标范围 sdq8wn  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 I_ "1.  
frame          ！frame改变坐标系的设置 8r@_b  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） >5Vv6_CI0?  
hx             ！平行于x方向网格 7~@q#]U[  
hy              ！平行于y方向网格 #QdBI{2  
yyZV/ x~  
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 BM+v,hGY  
  color = red,  ！图形颜色 O)g\/uRy  
  width = 3,   ！width线条宽度 tuzw% =Ey  
  "pump"       ！相应的文本字符串标签 uveby:dh  
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 0Da9,&D  
  color = blue,     tHez S~t_  
  width = 3, 5 rpX"(  
  "fw signal" z:B4  
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 k&-SB -  
  color = blue, &)?ECj0`  
  style = fdashed, @1_M's;  
  width = 3, KiN8N=z  
  "bw signal" \{W}  
o+e:H jZZ  
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 x9UF  
  yscale = 2,            ！第二个y轴的缩放比例 Opc, {,z6  
  color = magenta, 8]U;2H/z  
  width = 3, :q_(=EA  
  style = fdashed, 9VyY [&  
  "n2 (%, right scale)" %3B0s?,I  
pSM\(kVKa  
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 &rY73qfP'  
  yscale = 2, 4-RzWSFbo`  
  color = red, L4bx [  
  width = 3, ~gz_4gzb  
  style = fdashed, 7` 113`1  
  "n3 (%, right scale)" rr/0pa$  
I<p- o/TP  
5U[m]W=B  
; ------------- "`l8*]z  
diagram 2:                    ！输出图表2 8G&'ED_&  
hS<lUG!9UJ  
"Variation ofthe Pump Power" 1D3{\v  
]3B8D<p  
x: 0, 10 n o6q3<re  
"pump inputpower (W)", @x n#F:(MSOp  
y: 0, 10 b^WTX  
y2: 0, 100 `_`\jd@  
frame J]|Zh  
hx sFh mp  
hy Tw^b!74gq  
legpos 150, 150 /G}TPXA  
cj=6_k  
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 OjVI4@E;Xe  
  step = 5, ma__LWKM,  
  color = blue, PtR8m=O  
  width = 3, tGq0f"}'J  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 (-'Jf#&X^  
  finish set_P_in(pump, P_pump_in) wGRMv1|lIu  
8R G 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 6|h~pH  
  yscale = 2, O7&6]/`  
  step = 5, QU&LC  
  color = magenta, -u!{8S~wA  
  width = 3, mU d['Z  
  "population of level 2 (%, rightscale)", >x /;'Y.  
  finish set_P_in(pump, P_pump_in) Pe-1o#7~W  
E'_3U5U  
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 {,kA'Px)  
  yscale = 2, M$@Donx  
  step = 5, Sz z:$!t  
  color = red, >M`ryM2=D  
  width = 3, NT3Ti ?J,  
  "population of level 3 (%, rightscale)", ?<3wks|C  
  finish set_P_in(pump, P_pump_in) $F^p5EXkc6  
~hx__^]d  
jv<C#0E^  
; ------------- (P=q&]l[  
diagram 3:                         ！输出图表3 1?!z<<  
\piHdVD  
"Variation ofthe Fiber Length" K<#Q;(SFU  
@fjVCc;  
x: 0.1, 5 1MVzu7  
"fiber length(m)", @x luPj'd?  
y: 0, 10 bUcq LV  
"opticalpowers (W)", @y 5;:P^[cH9  
frame VB(S]N)F^  
hx y9/x:n&]  
hy OhNEt>  
5!tiu4LU  
f: (set_L(x);P_out(signal_fw)),     ！改变光纤长度对信号光输出功率的影响 -chk\75  
  step = 20,             p`oSI}ZwB  
  color = blue, @d/Wa=K  
  width = 3, f`^\v  
  "signal output" dq.'[  
vC j, aSW  
;f: (set_L(x);P_out(pump)),                     ！改变光纤长度对泵浦信号输出功率的影响 N,oN3mFF  
   step = 20, color = red, width = 3,"residual pump" XkGS3EY  
8Qwn  
! set_L(L_f) {restore the original fiber length } /E%r@Rui3$  
N\f={O8E  
D(z}c,  
; ------------- =.<S3?  
diagram 4:                                  ！输出图表4 VH>?%aL  
PF6w'T 5  
"TransverseProfiles" S(&]?!  
+?&|p0  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) C VyYV &U,  
O /S:S  
x: 0, 1.4 * r_co /um 8D)I~0\  
"radialposition (µm)", @x AbXaxt/[g?  
y: 0, 1.2 * I_max *cm^2 x!@3.$  
"intensity (W/ cm&sup2;)", @y w%Bo7 'o)V  
y2: 0, 1.3 * N_Tm ,sk0){rW  
frame <E&[sQ|3  
hx #<4/ *< 5  
hy E <O:  
Ho_ 2zx:8b  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布  ,xhB  
  yscale = 2, li`4&<WGC  
  color = gray, ` 6'dhB  
  width = 3, C{5^UCJkg  
  maxconnect = 1, o 5;V=8T;  
  "N_dop (right scale)" xklXV  
O]/BNacS  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 jf|5}5kSlf  
  color = red, X6Y<pw`y  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 u`j9m @`  
  width = 3, F:vHbs `y  
  "pump" ,'FdUq)i  
p%?VW  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 }}cS-p  
  color = blue, 3%J7_e'  
  maxconnect = 1, rNl` w.  
  width = 3, 0</]Jo%  
  "signal" pT=YV k  
4/Wqeq,E8  
faqh }4  
; ------------- jcY:a0[{D  
diagram 5:                                  ！输出图表5 bVbh| AA  
*pZhwO !D  
"TransitionCross-sections" j/h>G,>T=  
"=/YPw^0  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) MU-T>S4  
!K0:0:  
x: 1450, 2050 3r]m8Hp  
"wavelength(nm)", @x 8}A+{xVp8  
y: 0, 0.6 `'gadCTb=  
"cross-sections(1e-24 m&sup2;)", @y Zd Li<1P*d  
frame BB)( #yoi  
hx g6wL\g{29  
hy XXe?@w2{  
I8%2tLVY  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 [!Jd.zm  
  color = red, 8rXQK|A  
  width = 3,  HuCzXl  
  "absorption" );~JyoDo  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 ;<?mMi@<E  
  color = blue, = ;!$Qw4  
  width = 3, }5I+VY7a  
  "emission" .0gF&>I}  
o/6 'g)r*  
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