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

(* '3(^Zv  
Demo for program"RP Fiber Power": thulium-doped fiber laser, b]+F/@h~]  
pumped at 790 nm. Across-relaxation process allows for efficient ^QRg9s,T<  
population of theupper laser level. y~ =H`PAE  
*)            ！（*  *）注释语句 d qn5G!fI  
KeQcL4<  
diagram shown: 1,2,3,4,5  ！指定输出图表 \j>7x  
; 1: "Powersvs. Position"     ！分号是注释；光纤长度对功率的影响 =#b@7Yw:  
; 2:"Variation of the Pump Power"  ！泵浦光功率变化对信号输出功率的影响 5G* cAlU  
; 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 85GIEUvH/  
; 4:"Transverse Profiles"             ！横向分布，横坐标为半径位置 )?*YrWO{  
; 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 $E\|\g  
RwWg:4   
include"Units.inc"         ！读取“Units.inc”文件中内容 8-#%l~dr  
G21o @38e  
include"Tm-silicate.inc"    ！读取光谱数据  .w9LJ  
\n) ',4mY  
; Basic fiberparameters:    ！定义基本光纤参数 1PkCWRpR  
L_f := 4 { fiberlength }      ！光纤长度 2d ! '9mA  
No_z_steps := 50 {no steps along the fiber } ！光纤步长，大括号{ }是注释，相当于备注 h4? x_"V"  
r_co := 6 um { coreradius }                ！纤芯半径 DmiBM6t3N  
N_Tm := 100e24 { Tmdoping concentration }  ！纤芯Tm离子掺杂浓度 rVYoxXv  
&7aWVKon  
; Parameters of thechannels:                ！定义光信道 B[t^u\Fk  
l_p := 790 nm {pump wavelength }                ！泵浦光波长790nm N4!`iS Y  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 9)q3cjP{<  
P_pump_in := 5 {input pump power }                    ！输入泵浦功率5W Tu#< {'1$  
w_p := 50 um {radius of pump cladding }               ！包层泵浦相应的半径 50um ):D"L C  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光强度分布 i--t ?@#  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生损耗为0 cj/`m$  
\c=I!<9  
l_s := 1940 nm {signal wavelength }                   ！信号光波长1940nm Ux [<g%F"  
w_s := 7 um                          ！信号光的半径 l90mM'[  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信号光的高斯强度分布 X W)TI  
loss_s := 0                            ！信号光寄生损耗为0 y>^^.  
Ey46JO"  
R_oc := 0.70 {output coupler reflectivity (right side) }      ！输出耦合反射率 ISbs l =F  
_kj]vbG^;  
; 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 tMIYVHGy  
calc q+ $6D;9  
  begin 3$$E0`7.  
    global allow all;                   ！声明全局变量 K7+yU3  
    set_fiber(L_f, No_z_steps, '');        ！光纤参数 +K57. n{  
    add_ring(r_co, N_Tm); nM )C^$3<t  
    def_ionsystem();              ！光谱数据函数 xt{'Be&Ya+  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 'y8{, R4C  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信号光信道 'X`Z1L/  
    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信号光信道 rH+OXGoB  
    set_R(signal_fw, 1, R_oc);                                 ！设置反射率函数 c7Z4u|G  
    finish_fiber();                                   C|(A/b  
  end; I2ek`t]  
Y?VbgOM)  
; Display someoutputs in the Output window (on the right side): ！在Output aera区域显示输出 DDg\oGLp  
show "Outputpowers:"                                   ！输出字符串Output powers： ]n22+]D  
show"pump:     ", P_out(pump):d3:"W"  ！输出字符串pump：和计算值（格式为3个有效数字，单位W） }I"C4'(a  
show"signal:   ",P_out(signal_fw):d3:"W" ！输出字符串signal：和计算值（格式为3个有效数字，单位W） @fL ^I&++  
o u|emAV  
(B7G'h.?  
; ------------- f^WTsh]  
diagram 1:                   !输出图表1 lo1Ui`V  
}{aGh I~<  
"Powers vs.Position"          ！图表名称 h~MV=7 lE  
S:\i M:  
x: 0, L_f                      ！命令x: 定义x坐标范围 nR!e(  
"position infiber (m)", @x      ！x轴标签；@x 指示这些字符串沿坐标轴放置 Kz4S6N c  
y: 0, 15                      ！命令y: 定义y坐标范围 <#63tN9  
y2: 0, 100                    ！命令y2: 定义第二个y坐标范围 EP;/[O  
frame          ！frame改变坐标系的设置 v\0G`&^1  
legpos 600, 500  ！图行在图表窗口中的位置（相对于左上角而言） ,g`%+s7u  
hx             ！平行于x方向网格 T5BZD +Ta  
hy              ！平行于y方向网格 Pf?kNJ*Tv)  
=BsV`p7rU  
f: P(pump, x),    ！命令f: 定义函数图；P(pump, x)函数是计算x位置处的泵浦光功率 CI|lJ  
  color = red,  ！图形颜色 +8=$-E=  
  width = 3,   ！width线条宽度 "(koR Q  
  "pump"       ！相应的文本字符串标签 Y4T")  
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 $EMOz=)I#  
  color = blue,     adON&<  
  width = 3, _B4&Fb.  
  "fw signal" G4&s_ M$  
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 ZO}Og&%  
  color = blue, _`$LdqgE  
  style = fdashed, e5 =d Ev  
  width = 3, wN 2+3LY{  
  "bw signal" yoi4w 7:  
N!A20Bv  
f: 100 * n(x, 2),    ！n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 .J#'k+>  
  yscale = 2,            ！第二个y轴的缩放比例 x^f<G 6z  
  color = magenta, CU$kh z"  
  width = 3, 0MQ= Rt  
  style = fdashed, JuRoeq.  
  "n2 (%, right scale)" mp|pz%U  
kH!Z|P s?R  
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 <?jd NM  
  yscale = 2, ~Eut_d  
  color = red, dWY%bb  
  width = 3, Vla,avON  
  style = fdashed, E'5*w6  
  "n3 (%, right scale)" I8F+Z  
NGra/s,9 |  
A'qe2]  
; ------------- gmTBT#{6yH  
diagram 2:                    ！输出图表2 O-- p)\   
61\u{@o$  
"Variation ofthe Pump Power" #kg`rrF r  
St=nf\P&F  
x: 0, 10 gfk)`>E  
"pump inputpower (W)", @x a"~o'W7  
y: 0, 10 T.q2tC[bR  
y2: 0, 100 >nSsbhAe  
frame KaIKb=4L|  
hx LvG.ocCG  
hy  a+h$u  
legpos 150, 150 wNONh`b  
sW^M  ]  
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 U}v`~' K  
  step = 5, $QX$rN  
  color = blue, N'^>pSc4W|  
  width = 3, xh6(~'$  
  "signal output power (W, leftscale)",     ！相应的文本字符串标签 N_t,n^i9>*  
  finish set_P_in(pump, P_pump_in) lED!}h'4  
8K8u|]i  
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 ;w{<1NH2+.  
  yscale = 2, I?KN7(9u?  
  step = 5, D?|D)"?qb  
  color = magenta, ~G@NWF?7  
  width = 3, pP\Cwo #,  
  "population of level 2 (%, rightscale)", OY*y<>  
  finish set_P_in(pump, P_pump_in) ]kh]l8t^  
H7O~So*N5  
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 P jQl(v&O  
  yscale = 2, 9t! d.}  
  step = 5, j:9M${~  
  color = red, pDQ f(@M[  
  width = 3, #h!+b  
  "population of level 3 (%, rightscale)", , c.^"5  
  finish set_P_in(pump, P_pump_in) s"L&y <?)  
kuY^o,u-1e  
whI{?NP  
; ------------- ~Ps*i]n(  
diagram 3:                         ！输出图表3 B5\l&4X  
+)jUA]hJ/  
"Variation ofthe Fiber Length" o<g?*"TRh  
D#jwI,n}x  
x: 0.1, 5 b3N IFKw  
"fiber length(m)", @x U#<d",I  
y: 0, 10 fif;n[<  
"opticalpowers (W)", @y 0 _!0\d#c  
frame ?pL|eS7  
hx [o^$WL?c  
hy .EYL  
/E>;O47a  
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 Z bRRDXk!  
  step = 20,             F`}'^>  
  color = blue, cIug~ x>  
  width = 3, V[ UOlJ  
  "signal output" $W._FAAJ#  
)L<.;`g4x  
;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 vuQA-w7  
   step = 20, color = red, width = 3,"residual pump" Kq7r+ A  
? Fqh i  
! set_L(L_f) {restore the original fiber length } )Rr6@o  
[bLKjD  
~B<\#oO  
; ------------- {/[@uMS_6]  
diagram 4:                                  ！输出图表4 O"9t,B>=i  
$.,PteYK  
"TransverseProfiles" o!xCM:+J  
jMT[+f  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) ?[Yn<|  
.+7n@Sc  
x: 0, 1.4 * r_co /um /cS8@)e4  
"radialposition (µm)", @x ]H`wE_2tu  
y: 0, 1.2 * I_max *cm^2 t%@iF U;}  
"intensity (W/ cm&sup2;)", @y |dIR v  
y2: 0, 1.3 * N_Tm G>~/  
frame U<6)CW1;  
hx m?-)SA  
hy 4'faE="1)S  
Vy& X1lG:  
f: N_dop(1, x * um,0),      ！掺杂浓度的径向分布 p5In9s  
  yscale = 2, 2e6P?pX~2  
  color = gray, %+r(*Q+0$f  
  width = 3, $GoS?\G  
  maxconnect = 1, zkt~[-jm}  
  "N_dop (right scale)" 1dD%a91  
1P]J3o  
f: I(pump, -1, x *um, 0) * cm^2,    ！泵浦光沿光纤径向的强度分布 ~#g c{ C@  
  color = red, &UDbH* !4=  
  maxconnect = 1,           ！限制图形区域高度，修正为100%的高度 dX\OP>  
  width = 3, CXUF=IE  
  "pump" W *0!Z:?  
F,YP Il  
f: I(signal_fw, -1,x * um, 0) * cm^2,  ！信号光沿光纤径向的强度分布 |@d(2f8  
  color = blue, ->#wDL!6  
  maxconnect = 1, Tp;W  
  width = 3, ~U+<JC Z  
  "signal" ErN[maix#  
=u0=)\0@r  
Wv>`x?W  
; ------------- I/'>MDB!  
diagram 5:                                  ！输出图表5 b$w66q8  
W3l[a^1d  
"TransitionCross-sections" ln<[CgV8  
HubG>]  
I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) }51QUFhL0  
.(&6gB  
x: 1450, 2050 zGe =l;  
"wavelength(nm)", @x x~'_;>]r_  
y: 0, 0.6 BTsvL>Wy  
"cross-sections(1e-24 m&sup2;)", @y hgZvti  
frame g=KK PSK  
hx i<&z'A6&]*  
hy j gV^{8qG  
eDo4>k"5  
f: s12_Tm(x * nm) /1e-24,      ！Tm3+吸收截面与波长的关系 )fXxkOd  
  color = red, `-nSH)GBM  
  width = 3, nUY)Ln I  
  "absorption" H94_ae  
f: s21_Tm(x * nm) /1e-24,  ！Tm3+发射截面与波长的关系 Ym%# "  
  color = blue, =}ZY`O*/  
  width = 3, bO6z;D#  
  "emission" n2aUj(Zs=  
)YCH>Za  
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