[原創(chuàng)]RP Fiber Power仿真設(shè)計摻銩光纖激光器代碼詳解 [復(fù)制鏈接]

(* U2SxRFs >  
Demo for program"RP Fiber Power": thulium-doped fiber laser, gNxnoOY  
pumped at 790 nm. Across-relaxation process allows for efficient E8?Q>%_  
population of theupper laser level. VF6@;5p  
*)            �。�*  *）注釋語句 .$?s :t  
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diagram shown: 1,2,3,4,5  ！指定輸出圖表 /n:s9eq  
; 1: "Powersvs. Position"     ！分號是注釋；光纖長度對功率的影響 N\xqy-L9  
; 2:"Variation of the Pump Power"  ！泵浦光功率變化對信號輸出功率的影響 VJ1si0vWtq  
; 3:"Variation of the Fiber Length"！信號輸出功率vs 光纖長度的變化，仿真最佳光纖長度 .Sb|+[{  
; 4:"Transverse Profiles"             ！橫向分布，橫坐標(biāo)為半徑位置 Y6g[y\*t  
; 5:"Transition Cross-sections"    ！不同波長的躍遷橫截面，橫坐標(biāo)波長，縱坐標(biāo)為橫截面 .4?M.Z4[  
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include"Units.inc"         ！讀取“Units.inc”文件中內(nèi)容 ,Cx5( ~kU  
'g ,Oi1|~  
include"Tm-silicate.inc"    ！讀取光譜數(shù)據(jù) 3`="4  
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; Basic fiberparameters:    ！定義基本光纖參數(shù) 6,oi(RAf  
L_f := 4 { fiberlength }      ！光纖長度 iRPd=)  
No_z_steps := 50 {no steps along the fiber } ！光纖步長，大括號{ }是注釋，相當(dāng)于備注 [*50Ng>P`  
r_co := 6 um { coreradius }                ！纖芯半徑 nY(jN D  
N_Tm := 100e24 { Tmdoping concentration }  ！纖芯Tm離子摻雜濃度 *A8CJ  
"
\> <UJ  
; Parameters of thechannels:                ！定義光信道 La3f{;|u5M  
l_p := 790 nm {pump wavelength }                ！泵浦光波長790nm Z1q'4h=F.  
dir_p := forward {pump direction (forward or backward) }   ！前向泵浦 |!&,etu  
P_pump_in := 5 {input pump power }                    ！輸入泵浦功率5W vwP
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w_p := 50 um {radius of pump cladding }               ！包層泵浦相應(yīng)的半徑 50um g,Q!F  
I_p(r) := (r <=w_p) { pump intensity profile }          ！泵浦光強(qiáng)度分布 o5zth^p[  
loss_p := 0 {parasitic losses of pump wave }           ！泵浦光寄生損耗為0 o F@{&  
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l_s := 1940 nm {signal wavelength }                   ！信號光波長1940nm ,=K!Y TeVl  
w_s := 7 um                          ！信號光的半徑 SDTX0v  
I_s(r) := exp(-2 *(r / w_s)^2)            ！信號光的高斯強(qiáng)度分布 T@k&YJ  
loss_s := 0                            ！信號光寄生損耗為0 ty/jTo}  
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R_oc := 0.70 {output coupler reflectivity (right side) }      ！輸出耦合反射率 `W|2Xi=^5  
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; Function for defining themodel:   ！定義模型函數(shù)，一定要有calc命令，否則函數(shù)只會被定義，但不會被執(zhí)行 l*%?C*  
calc r;S%BFMJS  
  begin [[TB.'k  
    global allow all;                   ！聲明全局變量 Sgr<z d'b  
    set_fiber(L_f, No_z_steps, '');        ！光纖參數(shù) B?TAS  
    add_ring(r_co, N_Tm); 2]Y (<PC  
    def_ionsystem();              ！光譜數(shù)據(jù)函數(shù) ]=h Ts%]w  
    pump := addinputchannel(P_pump_in, l_p,'I_p', loss_p, dir_p);  ！泵浦光信道 if_e$,dh~>  
    signal_fw := addinputchannel(0, l_s, 'I_s',loss_s, forward);      ！前向信號光信道 KF
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    signal_bw := addinputchannel(0, l_s, 'I_s',loss_s, backward);    ！后向信號光信道 S,