| 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
(* =)2sehU/ Demo for program"RP Fiber Power": thulium-doped fiber laser, (eG9b pqr pumped at 790 nm. Across-relaxation process allows for efficient A<1:vV population of theupper laser level. 'T
'&OA *) !(* *)注释语句 h6yXW!8 Y`O"+Jr diagram shown: 1,2,3,4,5 !指定输出图表 7lC ); ; 1: "Powersvs. Position" !分号是注释;光纤长度对功率的影响 /uh?F ; 2:"Variation of the Pump Power" !泵浦光功率变化对信号输出功率的影响 'V*ixK8R0 ; 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 F7FUoew< ; 4:"Transverse Profiles" !横向分布,横坐标为半径位置 MM+xm{4l ; 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 ?^8CD.| ,C=Lu9 include"Units.inc" !读取“Units.inc”文件中内容 AM[#AZv 2/T4.[`t include"Tm-silicate.inc" !读取光谱数据 C\Y%FTS: ??'>kQ4 ; Basic fiberparameters: !定义基本光纤参数 S\,~6]^T L_f := 4 { fiberlength } !光纤长度 o~aK[
No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 Xscm>.di r_co := 6 um { coreradius } !纤芯半径 3U_-sMOB| N_Tm := 100e24 { Tmdoping concentration } !纤芯Tm离子掺杂浓度 xg|\\i k3pY3TA@w+ ; Parameters of thechannels: !定义光信道 ut<0- l_p := 790 nm {pump wavelength } !泵浦光波长790nm jHU5>Gt-} dir_p := forward {pump direction (forward or backward) } !前向泵浦 N=JZtf/i P_pump_in := 5 {input pump power } !输入泵浦功率5W oPqWL9] w_p := 50 um {radius of pump cladding } !包层泵浦相应的半径 50um p4Wy2.&Q I_p(r) := (r <=w_p) { pump intensity profile } !泵浦光强度分布 ~36)3W[4 loss_p := 0 {parasitic losses of pump wave } !泵浦光寄生损耗为0 l/wdu( ?!uj8&yyf l_s := 1940 nm {signal wavelength } !信号光波长1940nm )1EF7.| w_s := 7 um !信号光的半径 }o'WR'LX I_s(r) := exp(-2 *(r / w_s)^2) !信号光的高斯强度分布 ~]d3
f loss_s := 0 !信号光寄生损耗为0 Epl\( ]c Or$O* R_oc := 0.70 {output coupler reflectivity (right side) } !输出耦合反射率 9{A[n} U= Gw( ; Function for defining themodel: !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 ']x`d calc r?:zKj8/u begin (= T%eJ61 global allow all; !声明全局变量 z;VAi=m
q set_fiber(L_f, No_z_steps, ''); !光纤参数 nx2iEXsa add_ring(r_co, N_Tm); 'l&),]|$) def_ionsystem(); !光谱数据函数 hHu?%f* pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p); !泵浦光信道 !"G|y4O signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward); !前向信号光信道 e
hgUp = signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward); !后向信号光信道 ~!PaBS3A set_R(signal_fw, 1, R_oc); !设置反射率函数 [myIcLp^aP finish_fiber(); _#SCjFz end; +s`HTf ~"Q24I ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 77]6_ show "Outputpowers:" !输出字符串Output powers: UhI T!x 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) 5Nt40)E}sN 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) 68!W~%?pR .8v[ss6: ?k}"g$JFn ; ------------- S5,y!K]C~ diagram 1: !输出图表1 %mO.ur>21 =!~6RwwwY "Powers vs.Position" !图表名称 C{5bG=Sg~ ) ]y^RrD x: 0, L_f !命令x: 定义x坐标范围 8F;r$i2 "position infiber (m)", @x !x轴标签;@x 指示这些字符串沿坐标轴放置 fx"~WeVcO y: 0, 15 !命令y: 定义y坐标范围 Yu`KHvur y2: 0, 100 !命令y2: 定义第二个y坐标范围 8iIz!l%O frame !frame改变坐标系的设置 4e0/Q!o, legpos 600, 500 !图行在图表窗口中的位置(相对于左上角而言) bMrR hx !平行于x方向网格 }(yX$ 3?` hy !平行于y方向网格 hd'JXKMy D2@J4;UW*W 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 Cb1fTl% color = red, !图形颜色 ]E:P-xTwaI width = 3, !width线条宽度 [8Yoz1(smA "pump" !相应的文本字符串标签
g%.;ZlK 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 0C,2gcq color = blue, 0&W*U{0F\ width = 3, 0o>l+c "fw signal" c:@lR/oe" 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 k7R}]hq]"" color = blue, U.kTdNSp style = fdashed, 9[9
ZI1*s width = 3, vz*'1ugaA "bw signal" &l | |