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

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    只看楼主 倒序阅读 楼主  发表于: 2020-05-28
    (* ^loF#d= s  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, "m<eHz]D  
    pumped at 790 nm. Across-relaxation process allows for efficient Xv<;[vq}F  
    population of theupper laser level. '=@H2T6=  
    *)            !(*  *)注释语句 >8.v.;`  
    1GyAQHx,  
    diagram shown: 1,2,3,4,5  !指定输出图表 8z3I~yL_`+  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 ~ Iu21Q(*  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 d[qEP6B  
    ; 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 Q:Nwy(,I  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 HCn ]#  
    ; 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 D+@/x{wX2  
    [f0oB$  
    include"Units.inc"         !读取“Units.inc”文件中内容 {R6Zwjs  
    , L AJ  
    include"Tm-silicate.inc"    !读取光谱数据 bo?3E +B  
    c=U$$|qHV  
    ; Basic fiberparameters:    !定义基本光纤参数 F"HI>t)>  
    L_f := 4 { fiberlength }      !光纤长度 0wa!pE"  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 (tz_D7c$F  
    r_co := 6 um { coreradius }                !纤芯半径 WP#_qqO  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 ?AM 8*w  
    UHsrZgIRYT  
    ; Parameters of thechannels:                !定义光信道 p.W*j^';Q  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm Z ^9{Qq  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 W> -E.#!_  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W dp%pbn6w  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um M}KM]<  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 wshp{ y  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 ]oWZ{#r2  
    <PuB3PEvV  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm 1RUbY>K#U  
    w_s := 7 um                          !信号光的半径 9OO_Hp#|9  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 Ubos#hP  
    loss_s := 0                            !信号光寄生损耗为0 PU/Br;2A  
    lXL7q?,9  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 /B#lju!  
    O|7{%5h  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 zL!~,B8C  
    calc ^J}$y7  
      begin h/+I-],RF  
        global allow all;                   !声明全局变量 ^xkppN2  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 [E :`jY  
        add_ring(r_co, N_Tm); la"A$Tbu~  
        def_ionsystem();              !光谱数据函数 FsPDWy&x  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 1j) !d$8  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 A>1p]#  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 Hk~ gcG  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 >7Sl( UY-  
        finish_fiber();                                   :,z3 :PL  
      end; TWR#MVMI  
    'Tan6 Qa  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 sz2SWk^&  
    show "Outputpowers:"                                   !输出字符串Output powers: I3rnCd(  
    show"pump:     ", P_out(pump):d3:"W"  !输出字符串pump:和计算值(格式为3个有效数字,单位W) f[I'j0H%  
    show"signal:   ",P_out(signal_fw):d3:"W" !输出字符串signal:和计算值(格式为3个有效数字,单位W) { `|YX_HS  
    vaCdfO&  
    ~FCSq:_  
    ; ------------- "i<3}6/*  
    diagram 1:                   !输出图表1 AqKx3p6  
    |I^Jn@Mq:  
    "Powers vs.Position"          !图表名称 )PoI~km  
    jvQ+u L  
    x: 0, L_f                      !命令x: 定义x坐标范围 JE:n`l/p  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 !}Ou|r4_  
    y: 0, 15                      !命令y: 定义y坐标范围 Xgth|C}k  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 /$.vHt 5nt  
    frame          !frame改变坐标系的设置 "M#`y!__  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) HF=C8ZtlL  
    hx             !平行于x方向网格 {hq ;7  
    hy              !平行于y方向网格 'GdlqbX(%  
    xS-nO_t 'E  
    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 G~hILW^  
      color = red,  !图形颜色 &*:)5F5  
      width = 3,   !width线条宽度 x^#{2}4u  
      "pump"       !相应的文本字符串标签 qsRfG~Cg  
    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 C`T5d  
      color = blue,     DW%K'+@M  
      width = 3, Cy> +j{%!  
      "fw signal" }/}`onRZ  
    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 KA{DN!  
      color = blue, .VEfd4+ni{  
      style = fdashed, IV#My9}e  
      width = 3, >W]"a3E  
      "bw signal" o[r6sz:  
    f I-"8f0_  
    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 CZ%"Pqy&1L  
      yscale = 2,            !第二个y轴的缩放比例 #YYvc`9  
      color = magenta, ao5yW;^y  
      width = 3, :yFCp@&  
      style = fdashed, 5%aKlx9^#  
      "n2 (%, right scale)" Bv]wHPun  
    \bl,_{z?  
    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 +/lj~5:y  
      yscale = 2, _$_CR\$  
      color = red, ~zC fan/  
      width = 3, M~Dc5\T  
      style = fdashed, ? /X6x1PN  
      "n3 (%, right scale)" 9 @*>$6  
    ef ;="N  
    >#n-4NZ;p9  
    ; ------------- @z JZoJL]J  
    diagram 2:                    !输出图表2 r9'H7J  
     jy|xDQ  
    "Variation ofthe Pump Power" V+ ~2q=  
    moI<b\G@  
    x: 0, 10 lc(iy:z@  
    "pump inputpower (W)", @x 1L qJ@v0  
    y: 0, 10 g)6 k?Y  
    y2: 0, 100 >:nJTr  
    frame F9J9pgVP  
    hx ?G<I N)  
    hy < io8 b|A  
    legpos 150, 150 _\[JMhd}  
    '=Y~Ir+  
    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 ?+tZP3'  
      step = 5, {v/6|  
      color = blue, .[85<"C  
      width = 3, rGL{g&_  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 ]-L E'Px|  
      finish set_P_in(pump, P_pump_in) *n ?:)(  
    MdjMTe s  
    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 +%$V?y (  
      yscale = 2, HD|)D5wH|  
      step = 5, +N&(lj  
      color = magenta, w~?eX/;  
      width = 3, 6x8|v7cMH  
      "population of level 2 (%, rightscale)", t^;Fq{>  
      finish set_P_in(pump, P_pump_in) v!C+W$,T  
    wf$ JuHPt  
    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 &}=,8Gt1G  
      yscale = 2, HhH'\-[t  
      step = 5, ,R6$SrNcd  
      color = red, _Hj,;Z  
      width = 3, DdBr Jx  
      "population of level 3 (%, rightscale)", t4f\0`jN  
      finish set_P_in(pump, P_pump_in) <u/({SZ&  
    _J;a[Ky+[  
    &" n9,$  
    ; ------------- eA^|B zU  
    diagram 3:                         !输出图表3 Bn:sN_N  
    kO"aE~  
    "Variation ofthe Fiber Length" P*sCrGO%  
    W4a20KM2  
    x: 0.1, 5 G dY^}TJrh  
    "fiber length(m)", @x jK1! \j  
    y: 0, 10 8#B;nyGD1I  
    "opticalpowers (W)", @y th|Q NG  
    frame Sp:de,9@  
    hx ;r}<o?'RM  
    hy nzDY!Y  
    .1}(Bywm5  
    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 'J$NW  
      step = 20,             (Cd `~*5  
      color = blue, FM];+d0  
      width = 3, Mpx.n]O.  
      "signal output" \C|06Bs $  
    ]h@:Y]  
    ;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 ]0E-lD0J  
       step = 20, color = red, width = 3,"residual pump" Mq$=zsj  
    xy>mM"DOH  
    ! set_L(L_f) {restore the original fiber length } inrL'z   
    nfB9M1Svn  
    P*]g*&*Y +  
    ; ------------- K.Z{4x=0  
    diagram 4:                                  !输出图表4 U5=J;[w}N  
    f#mpd]e+6  
    "TransverseProfiles" =h{2!Ah7 X  
    >O=V1  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) K2Zy6lGOZ  
    qsx1:Ny 1  
    x: 0, 1.4 * r_co /um ~qH@Kz\%  
    "radialposition (µm)", @x { q<l]jn9  
    y: 0, 1.2 * I_max *cm^2 i|Wn*~yFOO  
    "intensity (W/ cm&sup2;)", @y ]B||S7idq  
    y2: 0, 1.3 * N_Tm &5<lQ1  
    frame &h-1Z}  
    hx 0kfw8Lon  
    hy GS%Dn^l  
    HL]?CWtGP  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 $'Z!Y;Ue  
      yscale = 2, i`;I"oY4  
      color = gray, ~ 5b %~:  
      width = 3, nFSa~M  
      maxconnect = 1, :nt%z0_  
      "N_dop (right scale)" ~MX@-Ff  
    cjk5><}`H7  
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 sYzG_* )  
      color = red, H Vy^^$  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 I( e>ff  
      width = 3, rYJvI  
      "pump" 5YasD6l  
    +nuQC{^>  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布 Oc>-jhx?  
      color = blue, {U9jA_XX  
      maxconnect = 1, *?S\0a'W@  
      width = 3, M}>q>  
      "signal" [B[J%?NS  
    ia[wVxd  
    ZpyRvDz  
    ; ------------- M<729M  
    diagram 5:                                  !输出图表5 6~s,j({^  
    JcP'+@X"  
    "TransitionCross-sections" Velmq'n  
    ~Y(M>u.+!  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) c/u;v69r  
    #LZ`kSlv4  
    x: 1450, 2050 jn[a23;G)  
    "wavelength(nm)", @x ntT| G0E  
    y: 0, 0.6 g6farLBF  
    "cross-sections(1e-24 m&sup2;)", @y \ gN) GR  
    frame -:QyWw/d  
    hx 1Sy#*  
    hy vR,'':  
    y.Py>GJJ1S  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 }y1M0^M-$  
      color = red, R[(,wY_1  
      width = 3, {:Q2Itsy  
      "absorption" VXa]L4jJ9  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 1\2 m'o  
      color = blue, A28w/ =e7  
      width = 3, I.>LG  
      "emission" jy?^an}#h  
    "~ /3  
     
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    只看该作者 1楼 发表于: 2021-09-28
    感谢,视频上有点看不清楚