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0 寮� 瑷€

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1 绯荤当(t菕ng)绺介珨瑷�(sh猫)瑷�

鎭掓祦婧愪竴鑸噰鐢ㄩ泦鎴愰亱绠楁斁澶у櫒鍜屼竴浜涘垎绔嬪厓鍣ㄤ欢鍙婂柈鐗囨(j墨)妲�(g貌u)鎴愮殑“澹撴帶鎭掓祦婧�”鏂规硶瀵︾従(xi脿n)锛岃垏绱旀ā鎿厓浠舵(g貌u)鎴愮殑鎭掓祦婧愮浉姣旓紝閫欑ó鏂规硶鍦ㄦ亽娴佺簿搴﹀拰绶氭€у害涓婇兘鏈夋槑椤殑鎻愰珮銆備絾鏄┎鏂规硶涓柈鐗囨(j墨)鏄敤浣滈’绀鸿垏鎺у埗闆诲鐨勭郸瀹�锛屽苟鏈皪杓稿嚭闆绘祦瀵︽檪妾㈡脯鍜屾帶鍒�锛屽爆浜庨枊鐠�(hu谩n)鎺у埗绯荤当(t菕ng)锛屽奖闊夸簡鎭掓祦婧愮殑绌�(w臎n)瀹氭€у強绮惧害銆傝┎绯荤当(t菕ng)鐢�“澹撴帶鎭掓祦”闆昏矾銆佷俊铏熼噰妯ｅ拰瑾�(di脿o)鐞嗛浕璺�銆佷繚璀�(h霉)闆昏矾銆侀嵉鐩�銆丩CD椤ず銆丷S232閫氫俊鎺ュ彛浠ュ強DSP铏曠悊鍣ㄧ瓑鐠�(hu谩n)绡€(ji茅)绲勬垚锛岀郴绲�(t菕ng)绲�(ji茅)妲�(g貌u)妗嗗湒濡傚湒1鎵€绀恒€�

閫氶亷閸电洡杓稿叆绲﹀畾锛屽苟鍦↙CD涓婇’绀猴紝鍚屾檪缍�(j墨ng)F2812閬嬬畻铏曠悊鍚庤几鍑虹浉鎳�(y墨ng)鍗犵┖姣旂殑PWM淇¤櫉銆侾WM缍�(j墨ng)浣庨€氭烤娉㈠櫒銆佹斁澶ц(di脿o)鐞嗗悗瀵︾従(xi脿n)D/A璁婃彌骞朵綔鐐�“澹撴帶鎭掓祦”妯″锛圴-I Constant Current锛夌殑鎺у埗闆诲瀵︾従(xi脿n)“澹撴帶鎭掓祦”銆侳2812瀵︽檪灏嶈几鍑虹殑闆绘祦閲囨ǎ锛岄噰妯ｆ暩(sh霉)鎿�(j霉)缍�(j墨ng)鏁�(sh霉)瀛楁烤娉�銆佸垎鏋愯檿鐞嗗悗鑸囩郸瀹氶浕娴佸€肩浉姣旇純锛屽緱鍒板樊鍊间綔鐐篜I瑾�(di脿o)绡€(ji茅)绠楁硶琛ㄩ仈(d谩)寮忎腑鐨勮几鍏ラ噺锛岄€氶亷PI閬嬬畻寰楀埌鎺у埗閲廢渚嗚(di脿o)鏁碢WM鐨勮几鍑哄鐝�(xi脿n)鎭掓祦銆�

2 绯荤当(t菕ng)纭欢瑷�(sh猫)瑷�

2.1 鐩存祦闆绘簮妯″瀵︾従(xi脿n)

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“鎿�(ku貌)娴侀浕璺�”鐢遍浕闃籖_P3鍜屽ぇ鍔熺巼閬�(d谩)鏋楅爴绠IP147绲勬垚锛岃(di脿o)绡€(ji茅)R_P3鍙娇+15V闆绘祦寰楀埌2A浠ヤ笂鐨勫ぇ闆绘祦杓稿嚭銆傜偤娓涘皯鐩存祦闆绘祦涓磱娉㈤噰鐢≧C-π鍨嬫湁婧愭烤娉㈡柟娉�锛岃畩闃籖_P1锛孮₁,C₃,鑸嘡_P2,Q₂,C₄绲勬垚鍏╁€婻C婵炬尝闆昏矾鍒嗗垾灏�+15V鍜�-15V闆绘簮楂樻晥婵炬尝銆傜偤NPN鍨嬫櫠楂旂锛屽埄鐢ㄦ櫠楂旂鐨勯浕娴佹斁澶т綔鐢ㄥ彲浠ラ枔鎺ュ澶ф烤娉㈤浕瀹圭殑瀹瑰€�銆� 鍋囪嫢Q₁鍜孮₂銆傛斁澶у€嶆暩(sh霉)鐐哄眴β₁鍜�β₂锛屽墖Q₁锛孮₂鍩烘サ闆诲C₃锛孋₄绛夋晥鍒板皠妤�锛屽垎鍒ュ氨鐐猴紙1+β1锛塁₃銆傦紙1+β₂锛塁₄,寰炲鐝�(xi脿n)澶ч浕闃诲ぇ闆诲婵炬尝骞舵笡灏忎簡闆昏矾鐨勯珨绌嶃€傚湒涓璂₅锛孌₆鐐洪浕婧愭晠闅滈’绀�锛孌₇鍜孌₈璧蜂繚璀�(h霉)绌�(w臎n)澹撳櫒LM7815,LM7915鐨勪綔鐢�銆傜暥(d膩ng)杓稿嚭绔湁璨�(f霉)杓夋檪锛屽鏋淟M7915绌�(w臎n)澹撳櫒鐨勮几鍏ョ闁嬭矾锛岄€欐檪LM7915鐒¤几鍑�锛�+15V缍�(j墨ng)璨�(f霉)杓夊姞鍒癓M7915鐨勮几鍑虹浠ヨ嚧?li谩n)p澹濴M7915銆侺M7815鐨勪繚璀�(h霉)鍘熺悊鐩稿悓銆�

2.2 鎭掓祦婧愭ā濉婅卜鐝�(xi脿n)

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R_s,R₅锛孯_f涓嶈畩鏅�锛岃几鍏ラ浕澹撴亽瀹氳几鍑洪浕娴佸伐鎭掑畾銆� 閬嬫斁U₄锛孶₅锛岄浕闃籖s锛孯₅,R_f鑷韩鐨勭┅(w臎n)瀹氭€ф亽娴佹簮鐨勭┅(w臎n)瀹氭€ц捣姹哄畾鎬т綔鐢�銆傚洜姝�锛孶₄锛孶₅閬哥敤楂樼簿搴﹂亱鏀綩P-27锛屽叾婕傜Щ鍍呯偤0.2μV/鈩�,鍏舵渶澶у櫔鑱查浕澹撶偤0.25μV銆俁₅锛孯f閬哥敤婧紓绯绘暩(sh霉)浣�銆佺簿搴﹁純楂樼殑闆婚樆銆傞噰妯ｉ浕闃籖_s閬哥敤闃诲€肩偤0.01Ω澶у姛鐜囬尦閵呯挡闆婚樆锛屽叾绮惧害鐐�1%銆俀₅鐐哄ぇ鍔熺巼閬�(d谩)鏋楅爴绠�2SD1559锛岀敱浜庨泦鎴愰亱绠楁斁澶у櫒涓€鑸伐浣滃湪灏忛浕娴佺媭鎱�(t脿i)锛屽洜姝ょ敤涓€鍊嬪皬鍔熺巼鏅堕珨绠₄锛�9014锛夐﹨(q奴)鍕昋₅銆侰₅,C₁₆,D₉锛孡₁妲�(g貌u)鎴愪綆閫氭烤娉互娓涘皯闆绘簮涓珮娆¤娉㈠皪LD鐨勫奖闊匡紝D₅鍦≦₅鎴鏅傝捣鍒版壖鍒舵祦浣滅敤銆�

2.3 A/D鑸嘍/A妯″瀵︾従(xi脿n)

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鐢辨涓€鍖栨柟娉曞彲寰�锛屽皣鎴闋荤巼fc锛圚z锛夊拰闆诲C21閮�?x矛)w涓€鍖�锛屾墍浠ラ浕闃荤郴鏁�(sh霉)鐐篕=100/fcC藠锛孋藠鏄互μF鐐哄柈浣嶇殑C21鍊硷紝瑕佷娇澧炵泭G=2鏅�锛岀敱鏂囩嵒(xi脿n)^[6]涓〃2-54鍙煡銆侹锛�1鏅傛墍灏嶆噳(y墨ng)闆婚樆R6锝濺10闆诲C22锝濩23锛�μF锛夌殑绯绘暩(sh霉)鍒嗗垾2.491,2.339,0.692,11锛�043锛�11.043锛孋21,C21銆傞伕鎿噁c=1000,C藠=0.01鏅傦紝鍦�4涓璕6锝濺l0锛孋21锝濩23鍒嗗垾鐐�24.491锛�23.39锛�6.92锛�110.43,110.43,0.01,0.01,0.01銆� 缍�(j墨ng)EWB浠跨湡杌熶欢浠跨湡鍙煡瑭蹭笁闅庢烤娉㈤浕璺緱鍒板緢濂界殑婵炬尝鎬ц兘,Butterworth婵炬尝鍦ㄩ€氬付鍏�(n猫i)娌掓湁绱嬫尝锛岄€欎娇寰桺WM鍒癉/A璁婃彌绮惧害涓婂緱鍒颁繚璀�锛屼豢鐪熺祼(ji茅)鏋滃鍦�5鎵€绀�銆�

2.4 閸电洡鑸囬’绀哄鐝�(xi脿n)

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2.5 LD淇濊(h霉)闆昏矾

鍗婂皫(d菐o)楂旀縺鍏夊櫒LD鐨凱N绲�(ji茅)闈炲父鑴嗗急锛屾サ瀹规槗鎼嶅銆傜灛鏅傜殑闆绘祦绐佽畩锛屽鏄撲娇鍗婂皫(d菐o)楂旀縺鍏夊櫒鍏╃闈㈣厰閺＄敘(ch菐n)鐢熸悕鍌烽€犳垚婵€鍏夊櫒姘镐箙鎬ф悕澹�^[7-8] 銆傛參閫熷暉鍕曪紙涔熺ū鐐鸿粺鍟熷嫊锛夋槸鎸囬﹨(q奴)鍕曢浕婧愰枊鍟熷悗锛屾帶鍒堕浕澹揤s涓嶇獊鐒跺姞鍦ㄦ暣鍊嬫亽娴侀浕璺笂锛岃€屾槸鍦ㄨō(sh猫)瀹氱殑鏅傞枔鍏�(n猫i)寰為浂閫愭几鍗囪嚦Vs銆傚皣骞惧€嬪墠鍚�?q奴)顬栦憨睢淥绠¤垏婵€鍏夊櫒L涓茶伅(li谩n)鍙互鏈夋晥寤堕暦LD绠＄殑浣跨敤澹藉懡锛屽洜鐐虹暥(d膩ng)鐧�(f膩)鐢熷ぇ鐨勫墠鍚戦浕澹撴檪锛岄€欎簺浜屾サ绠″皫(d菐o)閫氾紝闆绘祦灏囦笉鏈冨緸婵€鍏夌LCD閫氶亷锛屽緸鑰岄伩鍏嶆悕澹濴D绠�^[9,10] 銆傚湪LD鍏╃骞惰伅(li谩n)涓€鍊嬪皬闆诲锛屽悓鏅傚苟鑱�(li谩n)涓€鍊嬪弽鍚戜簩妤电闃叉LD鍙楀埌閬庡ぇ鐨勫弽鍚戦浕澹撹€屾悕澹炪€傜偤闃叉閬庨浕娴�锛屽彲閲囩敤杌熶欢鍜岀‖浠朵繚璀�(h霉)锛屽嵆閲囨ǎ鐨勯浕娴佸€肩稉(j墨ng)铏曠悊鍚庤垏闄愭祦鍊兼瘮杓�锛屽ぇ浜庨檺娴佸€兼檪锛屽皣闁嬮棞(gu膩n)绠₆灏�(d菐o)閫�锛孷₄琚疂鐐�0V浣胯(di脿o)鏁寸鎴閬�(d谩)鍒伴檺娴佺殑鐩殑銆�

3 绯荤当(t菕ng)杌熶欢瑷�(sh猫)瑷�

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4 绲�(ji茅)瑾�

鍦ㄨ┎瑷�(sh猫)瑷堜腑锛岄噰鐢ㄧ‖浠堕枆鐠�(hu谩n)璨�(f霉)鍙嶉鑸囨暩(sh霉)瀛楅枆鐠�(hu谩n)绲�(ji茅)鍚堢殑鏂规硶锛屾(g貌u)鎴愰洐闁夌挵(hu谩n)鎭掓祦闆绘簮銆傜‖浠堕枆鐠�(hu谩n)璨�(f霉)鍙嶉鍏锋湁寰堝挤鐨勬亽娴佺壒鎬э紝骞堕檷浣庢暩(sh霉)瀛楅枆鐠�(hu谩n)宸ヤ綔閲�銆傛暩(sh霉)瀛楅枆鐠�(hu谩n)涓昏璧风簿绱�(x矛)瑾�(di脿o)鏁翠綔鐢�锛屼娇绯荤当(t菕ng)鎭掓祦绮惧害寰楀埌鎻愰珮銆傛澶栵紝鍏呭垎鍒╃敤F2812鍏�(n猫i)缃硣婧愮啊鍖栦簡澶栧湇鑺墖瑷�(sh猫)瑷堝京(f霉)闆滄€�锛屽悓鏅傦紝16璺殑ADC閫氶亾鍜孭WM杓稿嚭鍙互灏嶅鍊嬫亽娴侀浕婧愭脯鎺�銆傚洜姝よ┎绯荤当(t菕ng)鍙互寤ｆ硾鐢ㄤ簬鍏夌簴鍌虫劅銆佸厜绾栭€氫俊浠ュ強鏈夋簮闆绘祦浜掓劅鍣�鐨勬縺鍏変緵鑳界瓑澶氭柟闈�锛屾湁钁楄壇濂界殑鎳�(y墨ng)鐢ㄥ墠鏅�銆�

鍙冭€冩枃鐛�(xi脿n)锛�

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[2]Doerr C R.Direct Modulation of Long-cavity Semiconductor Lasers[J].Light-wave Technology,1996,14锛�9锛�:2052-2061.

[3]鍛傜帀绁ワ紝琚侀棅锛屽嫉蹇楀挤锛岀瓑锛庡皬鍔熺巼楂樼┅(w臎n)瀹氬崐灏�(d菐o)楂旀縺鍏夐浕婧怺J].鐝�(xi脿n)浠ｉ浕瀛愭妧琛�(sh霉)锛�2008锛�31锛�7锛�:105-106锛�109锛�

[4]鍞愭晱锛岄煋娴凤紟鍩轰簬NCP5662鐨勫崐灏�(d菐o)楂旀縺鍏夊櫒椹�(q奴)鍕曢浕婧怺J].闆诲瓙娓噺鎶€琛�(sh霉)锛�2008,31锛�3锛�:47—50锛�

[5]闊撳畨澶�锛屽妷宄欓锛嶥SP鎺у埗鍣ㄥ師鐞嗗強鍏跺湪閬嬪嫊鎺у埗绯荤当(t菕ng)涓殑鎳�(y墨ng)鐢╗M].鍖椾含锛氭竻鑿ぇ瀛�(xu茅)鍑虹増绀�锛�2003.

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