切换到宽版
  • 广告投放
  • 稿件投递
  • 繁體中文
    • 2544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
    2176
    光券
    0
    只看楼主 倒序阅读 楼主  发表于: 2020-05-28
    (* RX DPT  
    Demo for program"RP Fiber Power": thulium-doped fiber laser, $*Z Zh  
    pumped at 790 nm. Across-relaxation process allows for efficient Edi`x5"l  
    population of theupper laser level. >*"6zR2 o  
    *)            !(*  *)注释语句 :>t^B+  
    *w[\(d'T  
    diagram shown: 1,2,3,4,5  !指定输出图表 zLa3Q\T  
    ; 1: "Powersvs. Position"     !分号是注释;光纤长度对功率的影响 Y3J;Kk#AH  
    ; 2:"Variation of the Pump Power"  !泵浦光功率变化对信号输出功率的影响 V7qc9Gd@I  
    ; 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 NX5A{  
    ; 4:"Transverse Profiles"             !横向分布,横坐标为半径位置 }CyS_Tc  
    ; 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 on=I*?+R  
    >.]' N:5  
    include"Units.inc"         !读取“Units.inc”文件中内容 Q:#Kt@W  
    &D[pX|!  
    include"Tm-silicate.inc"    !读取光谱数据 !^ /Mn  
    ,@b7N[h  
    ; Basic fiberparameters:    !定义基本光纤参数 V;V,G+0Re  
    L_f := 4 { fiberlength }      !光纤长度 cx(W{O"Jb  
    No_z_steps := 50 {no steps along the fiber } !光纤步长,大括号{ }是注释,相当于备注 Q4&|^RLLG  
    r_co := 6 um { coreradius }                !纤芯半径 7?O~3  
    N_Tm := 100e24 { Tmdoping concentration }  !纤芯Tm离子掺杂浓度 m<cvx3e  
    1p[Z`m*9  
    ; Parameters of thechannels:                !定义光信道 V>2mz c  
    l_p := 790 nm {pump wavelength }                !泵浦光波长790nm U =G^w L  
    dir_p := forward {pump direction (forward or backward) }   !前向泵浦 x`#|8  
    P_pump_in := 5 {input pump power }                    !输入泵浦功率5W b35Z1sfD j  
    w_p := 50 um {radius of pump cladding }               !包层泵浦相应的半径 50um jW G=k#WN  
    I_p(r) := (r <=w_p) { pump intensity profile }          !泵浦光强度分布 g[,1$39Z|@  
    loss_p := 0 {parasitic losses of pump wave }           !泵浦光寄生损耗为0 H%*< t}  
    22<T.c  
    l_s := 1940 nm {signal wavelength }                   !信号光波长1940nm K[XFJ9  
    w_s := 7 um                          !信号光的半径 |=Mn~`9p  
    I_s(r) := exp(-2 *(r / w_s)^2)            !信号光的高斯强度分布 Q.8)_w  
    loss_s := 0                            !信号光寄生损耗为0 >,JA=s  
    X@[)jWs  
    R_oc := 0.70 {output coupler reflectivity (right side) }      !输出耦合反射率 rkW2_UTZE  
    q Pc"A!-i  
    ; Function for defining themodel:   !定义模型函数,一定要有calc命令,否则函数只会被定义,但不会被执行 D=Pv:)*]  
    calc p FkqDU  
      begin > WsRCBA  
        global allow all;                   !声明全局变量 y<<:6OBj  
        set_fiber(L_f, No_z_steps, '');        !光纤参数 y@L-qO+{&  
        add_ring(r_co, N_Tm); <$\En[u0  
        def_ionsystem();              !光谱数据函数 ;BR`}~m  
        pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  !泵浦光信道 N~%F/`Z<+  
        signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      !前向信号光信道 mu(EmAoenQ  
        signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    !后向信号光信道 zgdOugmmt_  
        set_R(signal_fw, 1, R_oc);                                 !设置反射率函数 '<v/Gl\  
        finish_fiber();                                   \9S&j(I  
      end; `Xbk2KD p  
    O-M4NKl]6  
    ; Display someoutputs in the Output window (on the right side): !在Output aera区域显示输出 ZXf^HK  
    show "Outputpowers:"                                   !输出字符串Output powers: :!wdqn  
    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) UO& p2   
    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) Y68T&swD  
    r=" wd  
     !lf:x  
    ; ------------- "o*zZ;>^  
    diagram 1:                   !输出图表1 U*Hw t\  
    4gTD HQP  
    "Powers vs.Position"          !图表名称 m,~ @1  
    @CSTp6{y  
    x: 0, L_f                      !命令x: 定义x坐标范围 QDRgVP  
    "position infiber (m)", @x      !x轴标签;@x 指示这些字符串沿坐标轴放置 (]Z$mv!  
    y: 0, 15                      !命令y: 定义y坐标范围 0$n0f u  
    y2: 0, 100                    !命令y2: 定义第二个y坐标范围 z k[%YG&  
    frame          !frame改变坐标系的设置 V8z91  
    legpos 600, 500  !图行在图表窗口中的位置(相对于左上角而言) y<G@7?   
    hx             !平行于x方向网格 1|L3} 2  
    hy              !平行于y方向网格 ?Afx{H7  
    +M+ht  
    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 O MEPF2:  
      color = red,  !图形颜色 g2=5IU<  
      width = 3,   !width线条宽度 #Fua^]n  
      "pump"       !相应的文本字符串标签 ? U:LAub  
    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 V4RtH  
      color = blue,     2Et7o/\<  
      width = 3, x}.Q9L  
      "fw signal" :eK;:pN  
    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 *{]9e\DF  
      color = blue, V}l >p?  
      style = fdashed, QY,.|  
      width = 3, HR85!S`  
      "bw signal" 8 0>qqz  
    .TN9N  
    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 a*}ZT,V  
      yscale = 2,            !第二个y轴的缩放比例 CW(]6s u{  
      color = magenta, zS*X9|p  
      width = 3, X*2M Nx^K~  
      style = fdashed, eZ]4,,m  
      "n2 (%, right scale)" $18|@\Znj  
    *pMgjr  
    f: 100 * n(x, 3),          !n(x ,3) 函数是计算x位置处激活粒子数在能级3上的占比 p;!'5 f  
      yscale = 2, lE+v@Kb:  
      color = red, H)$-T1Wx4  
      width = 3, @`N)`u85[  
      style = fdashed, V~+{douq  
      "n3 (%, right scale)" 8J:6uO c|  
    ~M 6^%  
    &Bbs\ ;  
    ; ------------- -WIT0F4o;  
    diagram 2:                    !输出图表2 ^ ~HV`s  
    DRLX0Ml]\  
    "Variation ofthe Pump Power" 2\ /(!n  
    taXS>*|B  
    x: 0, 10 g?ID}E ~<  
    "pump inputpower (W)", @x X[:&p|g]  
    y: 0, 10 .c'EXuI7),  
    y2: 0, 100 W@w#A]  
    frame +_gPZFpbx  
    hx f i-E_  
    hy Be{7Rj v  
    legpos 150, 150 X I\zEXO  
    n&=3Knbd@d  
    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 L$7 NT}L  
      step = 5, N(v<*jn  
      color = blue, 317Lv \[  
      width = 3, uh UC m  
      "signal output power (W, leftscale)",     !相应的文本字符串标签 j_E$C.XU{g  
      finish set_P_in(pump, P_pump_in) UNcS\t2N  
    k,S'i#4q4  
    f: (set_P_in(pump,x); 100 * n_av(2)),   !改变泵浦信号功率对能级2上激活粒子占比的影响 H4 }^6><V  
      yscale = 2, V.kU FTCvf  
      step = 5, SrfDl*  
      color = magenta, bWK}oYB*  
      width = 3, 83UIH0(  
      "population of level 2 (%, rightscale)", 0n S69tH  
      finish set_P_in(pump, P_pump_in) ]3<k>?  
    Vkdchc  
    f: (set_P_in(pump,x); 100 * n_av(3)),   !改变泵浦信号功率对能级3上激活粒子占比的影响 ~/J:p5?L  
      yscale = 2, -C wx %  
      step = 5, UBp0;)-  
      color = red, LuS] D%  
      width = 3, N<$U:!Z  
      "population of level 3 (%, rightscale)", 8Letpygm  
      finish set_P_in(pump, P_pump_in) h >w4{u0  
    dOArXp`s  
    R=~+-^O!  
    ; ------------- m/sAYF"  
    diagram 3:                         !输出图表3 `#hdb=3  
    6;U]l.  
    "Variation ofthe Fiber Length" oJw~g [  
    >h/J{T(P>h  
    x: 0.1, 5 m98j`t  
    "fiber length(m)", @x +5Yc/Qp  
    y: 0, 10 "q4c[dna  
    "opticalpowers (W)", @y ++-\^'&1  
    frame #uJGXrGt=  
    hx yzW9A=0A)  
    hy JK.lL]<p i  
    rxQn[  
    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 2xH9O{  
      step = 20,             ZKyK#\v<  
      color = blue, Q+E%"`3V4l  
      width = 3, !.mMO_4}  
      "signal output" IB:Wh;_x  
    oop''6`C%  
    ;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 2/f:VB?<T  
       step = 20, color = red, width = 3,"residual pump" MNOT<(  
    u1O?`  
    ! set_L(L_f) {restore the original fiber length } g?!vR id@S  
    C)/uX5  
    WK]SHiHD  
    ; ------------- RG-pN()  
    diagram 4:                                  !输出图表4 DoAK]zyJA  
    PhF3' ">  
    "TransverseProfiles" S/& _  
    |i5A F\w  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) d paZ6g  
    ?as)vYP  
    x: 0, 1.4 * r_co /um ,Khhu%$  
    "radialposition (µm)", @x $A)i}M;uK  
    y: 0, 1.2 * I_max *cm^2 |U%S<X  
    "intensity (W/ cm&sup2;)", @y Qfr%BQV  
    y2: 0, 1.3 * N_Tm ~hPp)- A  
    frame h|"98PI  
    hx .P.TqT@)r  
    hy 4;W eB   
    H[ocIw  
    f: N_dop(1, x * um,0),      !掺杂浓度的径向分布 JzMPLmgG/  
      yscale = 2, :<4:h.gO8  
      color = gray, \Rop~gD  
      width = 3, Zso&.IATng  
      maxconnect = 1, 4A.ZMH  
      "N_dop (right scale)" C"_f3[Z  
    tpj({   
    f: I(pump, -1, x *um, 0) * cm^2,    !泵浦光沿光纤径向的强度分布 $w`QQ^\  
      color = red, S',i  
      maxconnect = 1,           !限制图形区域高度,修正为100%的高度 S/v+7oT  
      width = 3, 7$x~}*u  
      "pump" q}*"0r  
    Fy5xIRyI\F  
    f: I(signal_fw, -1,x * um, 0) * cm^2,  !信号光沿光纤径向的强度分布  (-DA%  
      color = blue, t=J\zyX!  
      maxconnect = 1, l;zpf|.Vc  
      width = 3, '$*d:1  
      "signal" z|[#6X6tT  
    H[?~u+  
    Z W` Ur>  
    ; -------------  `W< 7.  
    diagram 5:                                  !输出图表5 _XIls*6AK  
    W@v@|D@  
    "TransitionCross-sections" U.~, Bwb  
    5OP$n]|(  
    I_max :=maxr(I(pump, -1, 0, 0), I(signal_fw, -1, 0, 0)) Fv=7~6~  
    gE%{#&*  
    x: 1450, 2050 oomB/"Z  
    "wavelength(nm)", @x eW#U<x%P  
    y: 0, 0.6 HB yk 1  
    "cross-sections(1e-24 m&sup2;)", @y IE!fNuR4  
    frame 3 G/#OJ  
    hx t_5b  
    hy q 1a}o%  
    ;xaOve;9  
    f: s12_Tm(x * nm) /1e-24,      !Tm3+吸收截面与波长的关系 5"xZ'M~=  
      color = red, &n+3^JNl  
      width = 3, 9H:5XR  
      "absorption" Bi2be$nV  
    f: s21_Tm(x * nm) /1e-24,  !Tm3+发射截面与波长的关系 =SPuOy8  
      color = blue, 8`}(N^=}  
      width = 3, Tyt:Abym=  
      "emission" 'jWd7w~(  
    jXq~ x"(  
     
    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