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

(* @|-OJ4[5  
Demo for program"RP Fiber Power": thulium-doped fiber laser, ~4#B'Gy[  
pumped at 790 nm. Across-relaxation process allows for efficient |WqOk~)[Z3  
population of theupper laser level. t=wXTK5"  
*)            ！（*  *）注释语句 F#r#}.B='U  
Nud,\mXrY[  
diagram shown: 1,2,3,4,5  ！指定输出图表 D9ufoa&ua  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 xh9qg0d  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 fZryG  
; 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 BNm4k7 ]M  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 {ShgJ ;! Q  
; 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 "cUg>a3  
JNU/`JN9f  
include"Units.inc"         ！读取“Units.inc”文件中内容 x-m/SI]_N  
|hzT;  
include"Tm-silicate.inc"    ！读取光谱数据 D@54QJ<  
dbGgD=}o  
; Basic fiberparameters:    ！定义基本光纤参数 /Bv#) -5  
L_f := 4 { fiberlength }      ！光纤长度 lJ  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 *YV S|6bs  
r_co := 6 um { coreradius }                ！纤芯半径 =]>%t]  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 w<nv!e?  
P_4DGW  
; Parameters of thechannels:                ！定义光信道 _^!vCa7f  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm $~u.Wq  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 gT52G?-  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W K'b*A$5o  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um U@lV  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 wz(K*FP  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 |"7Pv skT  
,Qc.;4s-  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm 5D`26dB2  
w_s := 7 um                          ！信号光的半径 ^$?qT60%d|  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 !c(QSf502  
loss_s := 0                            ！信号光寄生损耗为0 Ej(2w Q  
]#eh&jw  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 n Y w\'c  
)C]x?R([m  
; 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 pO/%N94s  
calc ?T'][q  
  begin K b(9)Re  
    global allow all;                   ！声明全局变量 Jbw!:x [  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 T 1Cs>#)  
    add_ring(r_co, N_Tm); [?KIN_e#  
    def_ionsystem();              ！光谱数据函数 Bq}x9C&<  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 I 48VNX  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 p8>%Mflf  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 d0UZ+ RR#  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 d]B= *7]  
    finish_fiber();                                   ExhL[1E  
  end;  W'/>et  
iD_T P  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 z1j|E :  
show "Outputpowers:"                                   ！输出字符串Output powers： 3:`XG2'  
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） @6MAX"  
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） /&s}<BMHU  
F @SG((`  
,x#ztdvr  
; ------------- JeQ[qQ  
diagram 1:                   !输出图表1 "kSwa16O  
4M`Xrfwm'[  
"Powers vs.Position"          ！图表名称 rxE&fjW  
h7W}OF_=y  
x: 0, L_f                      ！命令x: 定义x坐标范围 &=w|vB)(p  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 ejcwg*i  
y: 0, 15                      ！命令y: 定义y坐标范围 tbG8MXX  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 |rPAC![=  
frame          ！frame改变坐标系的设置 ~"7J}[i 5  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） %KV2< t?  
hx             ！平行于x方向网格 Rt4di^v  
hy              ！平行于y方向网格 X>3^a'2,E  
19I:%$U3  
f: P(pump, x),    ！命令f: 定义函数图；P(pump, x)函数是计算x位置处的泵浦光功率 OgMI  
  color = red,  ！图形颜色 zO.6WJ  
  width = 3,   ！width线条宽度 MUwVG>b8J~  
  "pump"       ！相应的文本字符串标签 }98-5'u.X  
f: P(signal_fw, x),  ！P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 /H&aMk}J@y  
  color = blue,     xs1bxJ_R  
  width = 3, 3M*Y= ?pI  
  "fw signal" " i`8l.Lc  
f: P(signal_bw, x),   ！P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 &oN/_7y  
  color = blue, 'p)QyL`d  
  style = fdashed, ~ x`7)3  
  width = 3, -Bv 12ymLG  
  "bw signal" <Cq"| A  
Gpu_=9vzv  
f: 100 * n(x, 2),    ！n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 Czu1)y  
  yscale = 2,            ！第二个y轴的缩放比例 # "r kuDO  
  color = magenta, VkXn8J  
  width = 3, q$>_WF#||  
  style = fdashed, WOb8 "*OM  
  "n2 (%, right scale)" Wem?{kx0  
lU$X4JBzS  
f: 100 * n(x, 3),          ！n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 2f{kBD  
  yscale = 2, I#c(J  
  color = red, W-Of[X{<  
  width = 3, s`vSt* ]K  
  style = fdashed, ,%8$D-4#_  
  "n3 (%, right scale)" ^pw7o6}  
ZR mPP  
gz\j('~-D  
; ------------- b%<jUY  
diagram 2:                    ！输出图表2 qw0~ *0}  
Zd XKI{b  
"Variation ofthe Pump Power" )52#:27F  
|Gc&1*$  
x: 0, 10 1.dX)^\  
"pump inputpower (W)", @x &#,v_B)a_E  
y: 0, 10 BvJ\x)  
y2: 0, 100 ~2 Oc K  
frame %mmxA6I  
hx J/[7d?hI/  
hy 6vWii)O.D  
legpos 150, 150 \7DCwu[0M  
wRi~Yb?  
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 eoL0^cZj  
  step = 5, ~Jxlj(" 0(  
  color = blue, |VYr=hjo  
  width = 3, S5/p=H:  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 (zEYpTp  
  finish set_P_in(pump, P_pump_in) GZ,j?@  
w= B  
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 tnJ`D4  
  yscale = 2, oVreP  
  step = 5, _KxX&THaj  
  color = magenta, 2D_6  
  width = 3, b<\GI 7  
  "population of level 2 (%, rightscale)", oE5;|x3  
  finish set_P_in(pump, P_pump_in) PbQE{&D#  
*V<)p%l.  
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 GJ>ypEWo  
  yscale = 2, x' ?.~  
  step = 5,  HFv?s  
  color = red, C?(y2p`d\  
  width = 3, i _8zjj7  
  "population of level 3 (%, rightscale)", m]e0X*Kg  
  finish set_P_in(pump, P_pump_in) rr>IKyI'  
Iw*C*%}[Z  
du8!3I  
; ------------- uiuTv)pwF  
diagram 3:                         ！输出图表3 > `0| X  
TftOYY.hQ  
"Variation ofthe Fiber Length" i >J:W"W   
jigbeHRy  
x: 0.1, 5 |<'10  
"fiber length(m)", @x &'NQ)Dn  
y: 0, 10 @X|ok*v`  
"opticalpowers (W)", @y X CV0.u |  
frame L#[HnsLp_  
hx 65uZ LsQ  
hy 01-p `H+  
H]U "+52h  
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 0:HC;J  
  step = 20,             ]m RF[b$  
  color = blue, ]y$)%J^T  
  width = 3, ~xP Szf  
  "signal output" vW9^hbdx  
B>R* f C@g  
;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 y+l<vJu  
   step = 20, color = red, width = 3,"residual pump" $B*qNYpPy.  
EWSr@}2j .  
! set_L(L_f) {restore the original fiber length } YHJ'  
LZbRQ"!!o  
zj%cd;  
; ------------- G &m>Ov$#&  
diagram 4:                                  ！输出图表4 \]Kq(k[p  
kWI]fZ_n  
"TransverseProfiles" imC&pPBB/G  
K@I+]5E%?  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) cPx66Dh&  
\%Pma8&d  
x: 0, 1.4 * r_co /um w6%l8+{R  
"radialposition (µm)", @x F>p%2II/  
y: 0, 1.2 * I_max *cm^2 AsV8k _qZL  
"intensity (W/ cm&sup2;)", @y y>?k<)nA{  
y2: 0, 1.3 * N_Tm ))c*_n  
frame jc3ExOH  
hx hg(KNvl  
hy =#7s+d-  
JiG8jB7%}  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 R9S7_u  
  yscale = 2, 3xc:Y> *`  
  color = gray, Vx0MG{vG1  
  width = 3, F I80vV7  
  maxconnect = 1, T]5U_AI@  
  "N_dop (right scale)" avF&F  
xKRfl1  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 '&rw=.cU  
  color = red, B(HNB\3u  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 f J,8g/f8  
  width = 3, :0i#=ODR  
  "pump" K+(m'3`  
y}s 0J K  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 b#bO=T$e-  
  color = blue, #sozXza\G  
  maxconnect = 1, jFI]54,  
  width = 3, JI28}Cxs0  
  "signal" I$rW[l2  
W+fkWq7`Xx  
}s8*QfK>  
; ------------- p?EEox  
diagram 5:                                  ！输出图表5 _p3WE9T  
D_L'x"  
"TransitionCross-sections" M$DwQ}Z  
O% j,:t'"  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) rElG7[+)p  
BbXmT"@  
x: 1450, 2050 oZ|{J  
"wavelength(nm)", @x  uhPIV\  
y: 0, 0.6 CJ37:w{%*Y  
"cross-sections(1e-24 m&sup2;)", @y B$iMU?B3  
frame / r`Y'rm  
hx &k {t0>  
hy ]}*G[[ ^p  
^^U)WB  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 'Y6(4|w (  
  color = red, r)*_,Fo|  
  width = 3, qX}dbuDE"P  
  "absorption" LS?` {E   
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 J{v6DYhi  
  color = blue, 4.$hHFqS^5  
  width = 3, `pn-fk  
  "emission" {ILQ CvP*  
Q'vIeG"o  
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