| 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
(* 7
,~Krzv Demo for program"RP Fiber Power": thulium-doped fiber laser, I:)#U[tn0 pumped at 790 nm. Across-relaxation process allows for efficient xfQ;5n population of theupper laser level. tJfN6 *) !(* *)注释语句 F7u%oLjr >h-6B= diagram shown: 1,2,3,4,5 !指定输出图表 2Sd6b 2- ; 1: "Powersvs. Position" !分号是注释;光纤长度对功率的影响 ]1$AAmQH ; 2:"Variation of the Pump Power" !泵浦光功率变化对信号输出功率的影响 x(6.W"-S ; 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 Uy'ZL(2 ; 4:"Transverse Profiles" !横向分布,横坐标为半径位置 @?AE75E{ ; 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 X"59`Yh 7#*CWh1BNO include"Units.inc" !读取“Units.inc”文件中内容 \V\ET <.XoC?j include"Tm-silicate.inc" !读取光谱数据 fBh|:2u U.} =j'Us+ ; Basic fiberparameters: !定义基本光纤参数 5fv6RQD L_f := 4 { fiberlength } !光纤长度 WZ-{K"56 No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 5.UgJ/ r_co := 6 um { coreradius } !纤芯半径 *Z(C')7r N_Tm := 100e24 { Tmdoping concentration } !纤芯Tm离子掺杂浓度 Ekp
0.c8: >(J!8*7 ; Parameters of thechannels: !定义光信道 f3|=T8"t l_p := 790 nm {pump wavelength } !泵浦光波长790nm {%}6d~Bg dir_p := forward {pump direction (forward or backward) } !前向泵浦 I9&<:` P_pump_in := 5 {input pump power } !输入泵浦功率5W 'B:De"_(N w_p := 50 um {radius of pump cladding } !包层泵浦相应的半径 50um tELnq#<6 I_p(r) := (r <=w_p) { pump intensity profile } !泵浦光强度分布 9:5NX3"p loss_p := 0 {parasitic losses of pump wave } !泵浦光寄生损耗为0 $)a5;--W !t{!. l_s := 1940 nm {signal wavelength } !信号光波长1940nm TyXOd,%zl w_s := 7 um !信号光的半径 m5g: Q I_s(r) := exp(-2 *(r / w_s)^2) !信号光的高斯强度分布 )Em,3I/.l loss_s := 0 !信号光寄生损耗为0 ~/[N)RFD 7-B'G/PS/ R_oc := 0.70 {output coupler reflectivity (right side) } !输出耦合反射率 Mi-9sW #>NZN1 ; 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 +6E<+-N calc K?eo)|4)DB begin :Dm@3S$4< global allow all; !声明全局变量 \wd`6 set_fiber(L_f, No_z_steps, ''); !光纤参数 j0M;2 3@[ add_ring(r_co, N_Tm); 5<
nK.i, def_ionsystem(); !光谱数据函数 SX8%F:<. pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p); !泵浦光信道 ZXkAw sr signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward); !前向信号光信道 Stx-(Kfn4 signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward); !后向信号光信道 l/M+JT~R set_R(signal_fw, 1, R_oc); !设置反射率函数 :/Zh[Q@EG finish_fiber(); (P_+m# end; p 1fnuN |, -OAH6U9^ ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 $o^}<)DW show "Outputpowers:" !输出字符串Output powers: |mX8fRh show"pump: ", P_out(pump):d3:"W" !输出字符串pump:和计算值(格式为3个有效数字,单位W) >?xVr show"signal: ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W) pYQs|5d IC42O_^ !qq@F%tv ; ------------- SS- diagram 1: !输出图表1 7MfvU|D[d/ Vt>E\{@[t "Powers vs.Position" !图表名称 VW/1[?HG5 b`=rd 4cpU x: 0, L_f !命令x: 定义x坐标范围 8i"fhN3?Y "position infiber (m)", @x !x轴标签;@x 指示这些字符串沿坐标轴放置 {[dqXG$v ` y: 0, 15 !命令y: 定义y坐标范围 N~YeAe~+ y2: 0, 100 !命令y2: 定义第二个y坐标范围 @n3PCH6:Ao frame !frame改变坐标系的设置 O%{>Zo_< | |