切换到宽版
  • 广告投放
  • 稿件投递
  • 繁體中文
    • 2219阅读
    • 1回复

    [原创]RP Fiber Power仿真设计掺铥光纤激光器代码详解 [复制链接]

    上一主题 下一主题
    离线小火龙果
     
    发帖
    932
    光币
    2171
    光券
    0
    只看楼主 倒序阅读 楼主  发表于: 2020-05-28
    (* Wg[`H=)Q  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, =k'dbcfO$9  
    pumped at 790 nm. Across-relaxation process allows for efficient nT>?}/S  
    population of theupper laser level. Lv_>cFJ}[  
    *)            !(*  *)注释语句 bke 1 F '  
    0ode&dB  
    diagram shown: 1,2,3,4,5  !指定输出图表 C}!|K0t?  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 | 8AH_Fk  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 5XhV+t g.  
    ; 3:"Variation of the Fiber Length"!信号输出功率vs 光纤长度的变化,仿真最佳光纤长度 <ANKoPNie  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 ZA!vxQ?P,  
    ; 5:"Transition Cross-sections"    !不同波长的跃迁横截面,横坐标波长,纵坐标为横截面 Na=q(OKN  
    jkbz8.K  
    include"Units.inc"         !读取“Units.inc”文件中内容 ,=mn*  
    NM4 n  
    include"Tm-silicate.inc"    !读取光谱数据 dCHU* 7DS  
    3laSPih[.  
    ; Basic fiberparameters:    !定义基本光纤参数 Gqs8$[o  
    L_f := 4 { fiberlength }      !光纤长度 |y]#-T?)t  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 Cc^t&Eg  
    r_co := 6 um { coreradius }                !纤芯半径 sB6UlX;b:  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 ISl'g'o  
    a7+BAma<  
    ; Parameters of thechannels:                !定义光信道 AOTI&v  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm |h#mv~cF  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 h\1_$ac  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W @g{=f55  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um ?D.] c;PR  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 DI*xf Kt  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 03,+uf  
    ?0%lB=qQ  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm P6X 4m(t  
    w_s := 7 um                          !信号光的半径 9gFC]UVWh  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 a9"Gg}h\  
    loss_s := 0                            !信号光寄生损耗为0 t0wLj}"U  
    xT@\FwPr  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 E_xpq  
    bNqjjg  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 jtZ@`io  
    calc /_LUys/0  
      begin )q#b^( v  
        global allow all;                   !声明全局变量  @]A4{  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 I3SLR  
        add_ring(r_co, N_Tm); K$rH{dUM  
        def_ionsystem();              !光谱数据函数 nGRF< 2!  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 }C)   
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 %N!Y}$y  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 =Y89X6  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 g6N{Z e Wg  
        finish_fiber();                                   7)[4|I  
      end; qD%Jf4.0j  
    hG3b7!^#g  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 &359tG0@P  
    show "Outputpowers:"                                   !输出字符串Output powers: B=9|g1e  
    show"pump:     ", P_out(pump):d3:"W"  !输出字符串pump:和计算值(格式为3个有效数字,单位W) Fm*O&6W\@A  
    show"signal:   ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W) ]92@&J0w  
    n2$*Z6.G  
    k{9s>l~'  
    ; ------------- )u<sEF  
    diagram 1:                   !输出图表1 iA=9Lel  
    lqu1H&  
    "Powers vs.Position"          !图表名称 a?@j`@]ZR~  
    K^9!Qp  
    x: 0, L_f                      !命令x: 定义x坐标范围 :U?Kwv8s  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 '*W/Bett  
    y: 0, 15                      !命令y: 定义y坐标范围 V" I+E  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 ]{dg"J  
    frame          !frame改变坐标系的设置 mw.9cDf  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) " >;},$  
    hx             !平行于x方向网格 MA"DP7e?v  
    hy              !平行于y方向网格 )V+ ;7j<"D  
    g,9o'fs`x  
    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 ~GMlnA]6  
      color = red,  !图形颜色 wz;IKdk[  
      width = 3,   !width线条宽度 )x#^fN~ 7`  
      "pump"       !相应的文本字符串标签 i9W@$I,f  
    f: P(signal_fw, x),  !P(signal_fw ,x) 函数是计算x位置处的前向信号光功率 )j!22tlL  
      color = blue,     Q-(twh  
      width = 3, N3i}>Q)B  
      "fw signal" l3-;z)SgH  
    f: P(signal_bw, x),   !P(signal_bw ,x) 函数是计算x位置处的后向信号光功率 )9J&M6LX  
      color = blue, mM1\s>o  
      style = fdashed, ,M5J~Ga  
      width = 3, =((#kDrN  
      "bw signal" {dhGSM7  
    ]uj6-0q){W  
    f: 100 * n(x, 2),    !n(x ,2) 函数是计算x位置处激活粒子数在能级2上的占比 We_/:=  
      yscale = 2,            !第二个y轴的缩放比例 MHk\y2`/;  
      color = magenta, %YA=W=Yd  
      width = 3, ~ 8RN  
      style = fdashed, r@^h,  
      "n2 (%, right scale)" Tw);`&Ulo  
    9psD"=/"  
    f: 100 * n(x, 3),          !n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 x-mRPH  
      yscale = 2, g#T8WX{(V  
      color = red, #GY;.,  
      width = 3, C]p3,G,oN  
      style = fdashed, +hqsIx  
      "n3 (%, right scale)" rx CSs  
    }LN +V~  
    St^s"A  
    ; ------------- a3sXl+$D@  
    diagram 2:                    !输出图表2 E_MGejm@  
    Y }aa6  
    "Variation ofthe Pump Power" <9B\('  
    MkF:1-=L  
    x: 0, 10  =6Ihk  
    "pump inputpower (W)", @x _ ^r KOd  
    y: 0, 10 inBBU[Sl  
    y2: 0, 100 EQET:a:g  
    frame :"#EQq]ct  
    hx lrPiaSO`I  
    hy 5\A[ra  
    legpos 150, 150 '!I^Lfz-Z  
    5VDqx@(  
    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 4jfkCU  
      step = 5, H~^am  
      color = blue, m(L]R(t  
      width = 3, 51u8.%{4  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 T XWi5f[  
      finish set_P_in(pump, P_pump_in) M1^,g~e  
    al.~[T-O+  
    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 FY|.eY_7 {  
      yscale = 2, PqZMuUd  
      step = 5, ^w/_hY!4/  
      color = magenta, l\vtz5L  
      width = 3, ^F"Q~?D)  
      "population of level 2 (%, rightscale)", yZE"t[q#O  
      finish set_P_in(pump, P_pump_in) ]L@VpHEj  
    C0eP/d  
    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 k4FxdX  
      yscale = 2, 3Sv<Viuo  
      step = 5, CqDKQQ  
      color = red, v}q3_m]   
      width = 3, 0'{0kE[wn  
      "population of level 3 (%, rightscale)", QqA~y$'ut  
      finish set_P_in(pump, P_pump_in) id="\12Bw  
    </ 3 Shq  
    dlsVE~_G  
    ; ------------- k>I[U}h  
    diagram 3:                         !输出图表3 &=oW=g2  
    ;cgc\xm>  
    "Variation ofthe Fiber Length" [4KW64%l  
    g .ty#Z=:  
    x: 0.1, 5 - |n\  
    "fiber length(m)", @x xL,Lb}){%  
    y: 0, 10 TR/'L!EE  
    "opticalpowers (W)", @y =(Y 1y$  
    frame .>NhC"  
    hx Rd7Xs  
    hy Fsv:SL+5  
    ?&W1lYY  
    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 d~1Nct$:  
      step = 20,             E$"( :%'v  
      color = blue, BQq,,i8H  
      width = 3, *u^N_y  
      "signal output" u;rK.3o  
    #-?pY"N,  
    ;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 ]@)T]  
       step = 20, color = red, width = 3,"residual pump" +Bk" khH  
    *&]x-p1m  
    ! set_L(L_f) {restore the original fiber length } SV*h9LL  
    k$1ya7-@  
    *$mDu,'8  
    ; ------------- H)tnxD0)  
    diagram 4:                                  !输出图表4 \,| Xz|?C  
    s\A"B#9r  
    "TransverseProfiles" U+gOojRy{  
    q{I,i(%m8  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) pcwkO  
    eq +t%  
    x: 0, 1.4 * r_co /um 4X,fb`  
    "radialposition (µm)", @x ov>Rvy  
    y: 0, 1.2 * I_max *cm^2 ~RGZY/4  
    "intensity (W/ cm&sup2;)", @y k9H7(nS{  
    y2: 0, 1.3 * N_Tm Z |wM  
    frame \-3\lZ3qj  
    hx | d}f\a`  
    hy LnZzY0  
    <\uz",e}  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 }? j>V  
      yscale = 2, Ln/6]CMl  
      color = gray, U%oh ?g  
      width = 3, 3";Rw9  
      maxconnect = 1, s *$Re)}S  
      "N_dop (right scale)" rrBu6\D  
    j. UQLi&`  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 O9y4.`a"  
      color = red, 5A(zQ'6  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 I`Goc!5t  
      width = 3, xE%1C6~C<  
      "pump" o|#Mq"od  
    <X9  T}g  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 Omy4Rkj8bh  
      color = blue, g}HB|$P7  
      maxconnect = 1, oL?(; `"&  
      width = 3, e45gjjts  
      "signal" hm#S4/=#  
    BZAeg">3  
    nd)Z0%xo  
    ; ------------- A$*#n8 ,  
    diagram 5:                                  !输出图表5 <WXO].^  
    h_Ky2IB$  
    "TransitionCross-sections" X"QIH|qx-  
    -1dbJ/)  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) EX^}#|e*h  
    .Cv0Ze  
    x: 1450, 2050 yU* upQ  
    "wavelength(nm)", @x |GPR3%9  
    y: 0, 0.6 QP/6N9/  
    "cross-sections(1e-24 m&sup2;)", @y :B(F ?9qK  
    frame I,4t;4;Zk  
    hx u 6&<Bv  
    hy m8KJ~02l#  
    ::13$g=T9s  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 ,>"rcd  
      color = red, / S  
      width = 3, b~F(2[o  
      "absorption" scmn-4j'{  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 ~F5JN^5Y  
      color = blue, b=:$~N@Y  
      width = 3, dre@V(\;hQ  
      "emission" =%u\x=u|  
    Cj~45)r  
     
    分享到
    离线lileisgsz
    发帖
    14
    光币
    69
    光券
    0
    只看该作者 1楼 发表于: 2021-09-28
    感谢,视频上有点看不清楚