(* v_^>*Vm*
Demo for program"RP Fiber Power": thulium-doped fiber laser, 0+S ;0
pumped at 790 nm. Across-relaxation process allows for efficient ~P!\;S
population of theupper laser level. =`<9N%
*) !(* *)注释语句 lidVe]>
k6eh$*!
diagram shown: 1,2,3,4,5 !指定输出图表 r c++c,=
; 1: "Powersvs. Position" !分号是注释;光纤长度对功率的影响 `st3iTLZY
; 2:"Variation of the Pump Power" !泵浦光功率变化对信号输出功率的影响 JX!z,X?r4
; 3:"Variation of the Fiber Length"!信号输出功率vs 光纤长度的变化,仿真最佳光纤长度 %vn"tp
; 4:"Transverse Profiles" !横向分布,横坐标为半径位置 wH]5VltUT1
; 5:"Transition Cross-sections" !不同波长的跃迁横截面,横坐标波长,纵坐标为横截面 p.@kv
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include"Units.inc" !读取“Units.inc”文件中内容 y[`>,?ns5
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include"Tm-silicate.inc" !读取光谱数据 {:;6 *W
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; Basic fiberparameters: !定义基本光纤参数 Dxvizd>VU
L_f := 4 { fiberlength } !光纤长度 aFw \w>*^
No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 6&* z
r_co := 6 um { coreradius } !纤芯半径 ==#mlpi`S[
N_Tm := 100e24 { Tmdoping concentration } !纤芯Tm离子掺杂浓度 -XASS%
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; Parameters of thechannels: !定义光信道 ~#MXhhqB
l_p := 790 nm {pump wavelength } !泵浦光波长790nm wE~&Y?^
dir_p := forward {pump direction (forward or backward) } !前向泵浦 M:M"7>:
P_pump_in := 5 {input pump power } !输入泵浦功率5W m+|yk.md
w_p := 50 um {radius of pump cladding } !包层泵浦相应的半径 50um MD9 8N{+[|
I_p(r) := (r <=w_p) { pump intensity profile } !泵浦光强度分布 mP*Ct6628n
loss_p := 0 {parasitic losses of pump wave } !泵浦光寄生损耗为0 #nq$^H
$U=j<^R}a
l_s := 1940 nm {signal wavelength } !信号光波长1940nm "f~*4g
w_s := 7 um !信号光的半径 ~n=oPm$pR
I_s(r) := exp(-2 *(r / w_s)^2) !信号光的高斯强度分布 !P8Y(i
loss_s := 0 !信号光寄生损耗为0 ^V}c8 P|
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R_oc := 0.70 {output coupler reflectivity (right side) } !输出耦合反射率 F5y0(=$T
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; 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 +lplQh@RB
calc O2qy[]km
begin AXpg_JC
global allow all; !声明全局变量 yQcIfl]f
set_fiber(L_f, No_z_steps, ''); !光纤参数 k*4!rWr0r&
add_ring(r_co, N_Tm); DuQW?9^232
def_ionsystem(); !光谱数据函数 \/s0p
pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p); !泵浦光信道 XjXz#0nR
signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward); !前向信号光信道 7!F -.kG
signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward); !后向信号光信道 BaVooN~C
set_R(signal_fw, 1, R_oc); !设置反射率函数 #=V\WQb
finish_fiber(); =4[
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end; xs6kr
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; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 =odK i "-6
show "Outputpowers:" !输出字符串Output powers: QXu[<V
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) M3G ecjR
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) vw6>eT
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; ------------- Q7#t#XM
diagram 1: !输出图表1 [*J?TNk
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"Powers vs.Position" !图表名称 `mthzc3W
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x: 0, L_f !命令x: 定义x坐标范围 Mt4*`CxtH;
"position infiber (m)", @x !x轴标签;@x 指示这些字符串沿坐标轴放置 k4PXH
y: 0, 15 !命令y: 定义y坐标范围 I5@8=rFk
y2: 0, 100 !命令y2: 定义第二个y坐标范围 *C);IdhK%y
frame !frame改变坐标系的设置 $0gGRCCG;
legpos 600, 500 !图行在图表窗口中的位置(相对于左上角而言) :K~sazs7J
hx !平行于x方向网格 sd9b9?qiu
hy !平行于y方向网格 "l{{H&d
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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 Jot7
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color = red, !图形颜色 4T]A!
y{
width = 3, !width线条宽度 6e S~*
"pump" !相应的文本字符串标签 uPy5<