鎶€琛�(sh霉)闋婚亾

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鎮ㄧ従(xi脿n)鍦ㄧ殑浣嶇疆锛� 涓湅鍌冲嫊缍�(w菐ng) > 鎶€琛�(sh霉)闋婚亾 > 鎶€琛�(sh霉)鐧剧 > 鍏夌簴浣嶇Щ鍌虫劅鍣ㄧ殑宸ヤ綔鍘熺悊鑸囦豢鐪�

鍏夌簴浣嶇Щ鍌虫劅鍣ㄧ殑宸ヤ綔鍘熺悊鑸囦豢鐪�

鏅傞枔锛�2010-07-14 15:32:30渚嗘簮锛歭uonan

灏�(d菐o)瑾烇細?鍏夌簴鍌虫劅鍣ㄨ垏鍌崇当(t菕ng)鐨勫悇椤炲偝鎰熷櫒鐩告瘮鏈変竴绯诲垪鐛ㄧ壒鐨勫劒(y艒u)榛�锛屽闈堟晱搴﹂珮銆佹姉闆荤骞叉摼銆佽€愯厫铦�銆侀浕绲曠罚鎬уソ銆侀槻鐖�銆佸厜璺湁鍙挀鏇叉€�銆佺祼(ji茅)妲�(g貌u)绨″柈銆侀珨绌嶅皬鍜岄噸閲忚紩绛�銆�

      涓€銆佸紩瑷€

銆€銆€鍏夌簴鍌虫劅鍣ㄨ垏鍌崇当(t菕ng)鐨勫悇椤炲偝鎰熷櫒鐩告瘮鏈変竴绯诲垪鐛ㄧ壒鐨勫劒(y艒u)榛�锛屽闈堟晱搴﹂珮銆佹姉闆荤骞叉摼銆佽€愯厫铦曘€侀浕绲曠罚鎬уソ銆侀槻鐖�銆佸厜璺湁鍙挀鏇叉€�銆佺祼(ji茅)妲�(g貌u)绨″柈銆侀珨绌嶅皬鍜岄噸閲忚紩绛�銆傛墍浠�锛屽厜绾栧偝鎰熷櫒宸茬稉(j墨ng)鎴愮偤姗熻級鍏夊(xu茅)鍌虫劅鍣ㄧ殑蹇呯劧鐧�(f膩)灞曡定鍕�銆�

銆€銆€鍔� 鎷垮ぇRoctest鍏徃鐢熺敘(ch菐n)浜嗕竴绋晢妤�(y猫)鐢ㄩ€旂殑鍏夌簴浣嶇Щ鍌虫劅鍣紙Fiber-Optic Linear Position & Displacement Sensor, FO锛峀PDS锛�锛岄€欑ó鍌虫劅鍣ㄤ娇鐢ㄤ簡Fizeau骞叉秹鍎€瑙h(di脿o)灏堝埄鎶€琛�(sh霉)锛圲S patent #5202939/#5392117锛�锛屽叿鏈夌祼(ji茅)妲�(g貌u)绨″柈銆佺簿搴﹂珮鍜岄熆鎳�(y墨ng)蹇殑鍎�(y艒u)榛�锛岀洰鍓嶅凡缍�(j墨ng)鍦ㄥ湡鏈ㄥ伐绋嬮牁(l菒ng)鍩熷緱鍒颁簡鎴愬姛鐨勬噳(y墨ng)鐢ㄣ€傛湰鏂囧皣瑭崇窗浠嬬垂瑭茬ó鍌虫劅鍣ㄧ殑鍘熺悊 鍜岀敤閫�銆�

 

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銆€銆€鍌虫劅鍣ㄧ殑绨$暐绲�(ji茅)妲�(g貌u)濡傚湒1鎵€绀猴紝鍏堕€f】鍙互姘村钩鏂瑰悜绉诲嫊锛屽湪閫f】涓婂浐瀹氫簡钖勮啘Fizeau骞叉秹鍎€锛圱FFI锛�锛屽畠鐨勮┏绱版(g貌u)閫犲鍦�2鎵€绀恒€�

 


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銆€銆€锛�1锛夊厜淇¤櫉瑾�(di脿o)鍒�

銆€銆€瀵﹂殯浣跨敤鏅傚皣鍌虫劅鍣ㄨ垏璁€鏁�(sh霉)鍣紙Demodulator锛夐€f帴锛岃畝鏁�(sh霉)鍣ㄤ腑鐧藉厜浜屾サ绠″厜婧愮櫦(f膩)鍑虹殑鍏夊緸閫f帴璁€鏁�(sh霉)鍣ㄧ殑鍏夌簴鐨勪竴绔叆灏勶紝鍌宠几?sh霉)绔瑽鎺abry- Perot鍌虫劅鍣�锛屽啀鐢卞妯″厜绾栧皠鍑�锛岀収灏勫湪TFFI骞叉秹鍎€锛堝厜妤旓級鐨勮〃闈�銆傜暥TFFI姘村钩绉诲嫊鏅�锛岀収榛炵殑浣嶇疆涔熸渻涓嶅悓銆傚厜妤斾笂涓嬪叐鍊嬭〃闈㈤兘閸嶆湁鍗婂弽灏� 鑶�锛屽洜鑰屾(g貌u)鎴愪簡Fabry-Perot鑵旈珨銆傜暥璁€鏁�(sh霉)鍣ㄧ櫦(f膩)灏勭殑鐧藉厜鐨勪竴閮ㄥ垎琚涓€鍊嬪崐鍙嶅皠閺″弽灏勫悗锛屽叾浣欑殑鐧藉厜绌块亷Fabry-Perot鑵旈珨锛屼笖鍐嶄竴娆¤ 绗簩鍊嬪崐鍙嶅皠閺″弽灏勫洖渚�锛屽叐鏉熷弽灏勫厜鐩镐簰骞叉秹锛屼娇寰楀師渚嗗叆灏勭櫧鍏夌殑鍏夎瓬琚(di脿o)鍒�銆�

銆€銆€鍋囪ō(sh猫)鍏夋鐨勬潗鏂欐槸鐜荤拑锛屽彇鍏舵姌灏勭巼n=1.6锛屽叆灏勭櫧鍏変簩妤电娉㈤暦鑼冨湇鏍规摎(j霉)鏂囩嵒[1]鍙栫偤600nm锝�1750nm銆傛牴鎿�(j霉)鍦�2锛屽厜妤斾笂涓嬭〃闈㈠弽灏勫厜鐨勫厜绋嬪樊鐐�2nh锛屽亣瑷�(sh猫)鍏夋簮鍏夎瓬鎵€鏈夐牷鐜囧厜娉㈢殑鎸箙鐨嗙偤a锛屽叐鏉熷厜鍦ㄧ浉閬囬粸鐧�(f膩)鐢熷共娑夋檪鐨勭浉浣嶅樊鐐篸锛屽厜妤旈潰鐨勫弽灏勭巼鐐篟锛岄€忓皠鐜囩偤1-R锛屽墖鍚堟垚鎸箙y鐐猴細y=a+aRe-i未                                    锛�1锛�

銆€銆€鎿�(j霉)姝愭媺鍏紡e-i未锛漜os未锛峣sin未锛屽彲寰楋細y(t)=a(1+ Rcos未锛峣Rsin未)                        锛�2锛�

銆€銆€鍏夊挤鑸囧厜娉㈡尟骞呯殑骞虫柟鎴愭姣旓紝瑷�(sh猫)鍏夋尝鐩搁亣榛炵殑鍏夊挤搴︾偤I锛屽墖锛�

銆€銆€I锛漼(t菕ng)(t)脳y(t)*锛漚2(1+R2+2Rcos未)                 锛�3锛�

銆€銆€灏嶄簬TFFI鐨勬煇鍊嬩綅缃�锛屽厜妤旈潰鐨勯珮搴︾偤h锛屼笉鍚屾尝闀穕鐨勫厜灏嶆噳(y墨ng)鐨勫共娑夌浉浣嶅樊未鐐猴細

銆€銆€未锛濓紙2nh/l锛壝�2p锛�4pnh/l                    锛�4锛�

銆€銆€鍏夊挤I鐨勬サ鍊肩偤锛�

銆€銆€I锛漚2锛�1+R2+2R锛�                              锛�5锛�

銆€銆€鍦� TFFI骞叉秹鍎€涓�锛岀偤浜嗗舰鎴愬厜鐨勫弽灏勯潰锛岄渶瑕佸湪鍏夋鐨勪笂涓嬭〃闈㈠悇閸嶄笂涓€灞よ啘锛岃€岄崓鑶滃叿鏈変竴瀹氱殑鍘氬害锛屾墍浠ラ崓鑶滀笂涓嬭〃闈㈢殑鍙嶅皠鍏夊皣褰㈡垚骞叉秹锛屾渻褰遍熆娓噺绲�(ji茅) 鏋�銆傚洜姝�锛岄崓鑶滅殑鍘氬害鎳�(y墨ng)鎺у埗鍦ㄥ厜婧愪腑蹇冩尝闀风殑1/4锛屼緥濡傚厜婧愭尝闀风偤600nm~1000nm锛屽墖閸嶈啘鍘氬害鐐�800nm锛堝亣瑷�(sh猫)閸嶈啘鏉愭枡鐨勬姌灏勭巼鐐�1锛�锛岄€� 妯i崓鑶滀笂涓嬭〃闈㈠ぇ閮ㄥ垎鐨勫弽灏勫厜鐩镐綅宸偤180掳锛屽挤搴﹁琛版笡銆�

鍦ㄥ湒2鎵€绀虹殑鍧愭绯讳腑锛岃ō(sh猫)鍏ュ皠榛炶窛鍧愭鍘熼粸鐨勮窛闆㈢偤x锛屽厜妤旂殑鍌炬枩瑙掑害鐐篴锛屾鏅傚皪鎳�(y墨ng)鐨勫厜妤旈潰楂樺害鐐篽锛�

銆€銆€h锛�7锛媥tga 锛坢m锛�                         锛�6锛�

銆€銆€tga锛�18/25000锛�7.2鈥�10-4

銆€銆€閫欓噷鍙杧锛�12.5mm=12500mm渚嗚▓绠楀偝鎰熷櫒瑾�(di脿o)鍒跺厜鐨勫挤搴﹀垎甯冿紝灏噚鐨勫€间唬鍏ワ紙6锛夊紡鍙緱h锛�16mm锛屼唬鍏ワ紙4锛夊紡寰楀埌d锛屽啀鎶奷浠e叆锛�3锛夊紡鍗冲彲寰楀埌鍏夊挤I銆傚彇鍏夋簮娉㈤暦鑼冨湇0.6mm锝�1.75mm锛屽厜妤旈崓鑶滃弽灏勭巼R锛�0.5锛屽墖鍙互寰楀埌濡傚湒3鎵€绀虹殑鍏夊挤鍒嗗竷鍦�銆�

 

銆€銆€鍙锛屽湪鍏夋簮鍏夎瓬鑼冨湇鍏�(n猫i)閮ㄥ垎娉㈤暦铏曠敘(ch菐n)鐢熶簡鏈夐檺鍊嬪共娑夋サ澶у€�銆傞’鐒�锛屽湪鍌虫劅鍣ㄦ墍鍦ㄧ殑涓嶅悓浣嶇疆锛孴FFI灏嶅厜婧愮殑瑾�(di脿o)鍒舵儏娉佹槸涓嶅悓鐨�锛屽嵆骞叉秹妤靛ぇ鍊煎皪鎳�(y墨ng)鐨勬尝闀峰€兼渻鐧�(f膩)鐢熻畩鍖栥€傚湪娉㈤暦l杓冨皬铏�锛屽共娑夋サ澶у€肩殑娉㈠嘲涔熻純瀵嗐€�

 

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