Kev tsim khoom ntawm erbium -} doped optical fiecers los ntawm Vad Txoj Kev Pab Cuam feem cuam tshuam nrog tsib ntu sib txawv:
(1) fabrication ntawm cov pas nrig ntxeem tau siv VAD txoj kev
(2) doping thiab impregnation txheej txheem
(3) Daim Ntawv Sau Ua Tus Txheej Txheem
(4) cov txheej txheem sheathing
(5) Kho qhov muag kho qhov muag
Txhua theem nthuav qhia nws tus kheej cov kev sib tw
Fabrication ntawm cov ntxeem tau mandrels ntawm vad txoj kev
Cov txheej txheem pib nrog lub vad teeb tsa, txawm hu nws "yuav luag txhua lub kauj ruam no yuav ua li cas. Koj pib nrog lub hom phiaj Silica silica sid-} 20 hli nyob rau hauv lub cheeb, tsis muaj dab tsi zoo siab - muab tso rau ntsug. Lub cev tam sim no ua rau koj lub cev xa khoom, pub mis hauv Sicl 11 ntawm cov nqi ntawm 450-550 litres ib feeb. Qhov ntawd yog qhov kev ua haujlwm zoo nkauj heev, thiab qhov chaw koj tsaws rau hauv qhov ntawd cuam tshuam rau koj tus nqi thauj khoom ntau dua li feem ntau cov ntawv txheeb xyuas.
Cov tshuaj oxygen ntws hauv 15 liv ib feeb, hydrogen ntawm 10. Cov nplaim taws ntawm 10. Tag nrho cov khoom tso siab rau ntawm thermal oxidation tshwm sim nrog cov hydrolysis, uas yog vim li cas cov kev sib piv siv roj ntau heev. Tau txais lawv tsis ncaj ncees lawm thiab koj yuav pom nws nyob rau hauv qhov txawv txawv ntawm koj cov qauv pacous.
Dab tsi koj xaus nrog, tom qab lub sijhawm so kom txaus, yog ib qho ntxig hnub manro₂ Mandrel ntxig 60mm hauv lub taub. Lub hom phiaj qws nqa mus rau sab hauv lub sijhawm no ntawm 55 {{}}} 60 xyoo ib teev-qeeb thiab khov kho. Rush nws thiab lub particle faib ua tsis ncaj; Mus qeeb qeeb thiab koj pheej hmoo ntau qhov chaw muaj ntau. Muaj qhov chaw qab zib, thiab nrhiav qee zaum qee zaum yuav siv sijhawm qee zaum ua tsis tiav. Tus qauv ntxeem tau yog qhov tseem ceeb vim tias nws morphology txiav txim siab zoo npaum li cas nws yuav nqus tau doping tov khoom tom qab. Nthuav thiab ntom thiab cov kev daws teeb meem erbium yuav tsis tau nkag mus rau kev nkag mus; Dhau dhau thiab koj tau txais kev pom kom meej meej uas yuav haunting koj thaum lub sijhawm Sinteringing theem.
Doping impregnation txheej txheem
Nov yog cov khoom tau txais tshuaj. Porous Sio₂ Core Core Qav Mus ncaj nraim rau hauv lub thawv ntim nrog koj cov kua dej doping, txhua yam ua tiav ntawm chav kub vim tias cua sov nyob rau theem no yuav yog counterproductive. Kev daws nws tus kheej yog kev dag ntxias tau yooj yim: ethanol yog cov kuab tshuaj, ercl₃ raws li dopant.
Tam sim no, Ercl₃ muaj tsawg solubility nyob rau ethanol - Koj tuaj yeem thawb nws txog 0.54% los ntawm qhov hnyav, thiab qhov ntawd zoo nkauj npaum li cas koj nthab. Sim ua neeg nkag siab ntau dua thiab koj tsuas yog siv dag zog vim tias nws yuav tsis nyob hauv kev daws teeb meem. Qee cov kev sim tau sim nrog cov kuab tshuaj sib txawv los txhawb tus lej no, tab sis ethanol tseem ntxuav tau tus txheej txheem uas cuam tshuam nrog cov khoom tsis huv uas cuam tshuam nrog cov qauv iav.
Tus impregnation nws tus kheej yog ncaj qha kho tshuab- koj tsuas yog cia lawv txoj haujlwm ua txoj haujlwm daws teeb meem rau hauv cov pores. Tab sis cov kev sib txuam ntawm Uptake nyob ntawm txhua yam li cas raws li cov qauv uas muaj txoj kev sib tw tau los ntawm kauj ruam ib. Hom qauv no tseem ua haujlwm nrog Alcl₃, uas qee zaum tau txais co - doped nrog erbium los hloov cov yam ntxwv emission. Aluminium tuaj yeem hloov kho cov pob tawg Emission Peak me ntsis thiab cuam tshuam lub neej ntawm cov xeev zoo siab, uas yog qhov teeb meem rau cov ntawv thov amplifation.
Ib qho kev paub ntaub ntawv tsis yog ib txwm hais txog: Lub sijhawm soaked tseem ceeb tshaj li koj xav. Tso nws luv thiab koj tau ua tiav tsis tiav rau hauv pas nrig sab hauv. Tso nws ntev heev thiab ... Zoo, qhov tseeb, uas tsis tshua muaj teeb meem tshwj tsis yog tias koj cov kev daws teeb meem tseem ua rau pom muaj nyob hauv.
Preform Tsim Txheej Txheem
Qeb no yog qhov kev ua siab ntev ua ib qho kev tsim txiaj. Koj tau txais ib tus pas nrig ntxeem tau soaked nrog dopant daws, thiab koj yuav tsum tau hloov nws mus rau hauv lub khob iav ruaj khov yam tsis tau poob koj cov erbium lossis tsim tej yam tsis zoo. Cov txheej txheem tawg cia rau hauv peb txoj kev kho mob cua sov, txhua tus nrog nws tus kheej lub hom phiaj.
Ua ntej los nce kev tshem tawm. Lub pas dej mus rau hauv qhov cub tawg hauv nitrogen {}}}}}}}} nws mus rau ib qho ntawm 60 {}} 70 degree. Qhov no zoo li maj, thiab nws yog, txhob txwm tshaj tawm. Koj yog evaporating ethanol, uas muaj qhov cub npau npau ntawm 78 degree, tab sis koj khaws qhov kub hauv qab no uas kom tsis txhob boiling, uas yuav tsim kev tawg lossis raws cov qauv sib dhos. Cov kauj ruam no siv qhov twg los ntawm 24 teev rau 240 teev nyob ntawm tus pas nrig loj thiab yuav ua li cas nws muaj siab tau txais thaum lub sij hawm impregnation. Tsis muaj kev maj. Kuv tau pom cov engineers sim ua kom nrawm dua no los ntawm cranking qhov ntsuas kub, thiab lawv ib txwm khuv xim nws thaum lawv pom voids nyob rau hauv qhov kawg ua ntej.
Thaum lub ethanol ploj mus, koj nyob nraum sab laug nrog tso erbium chloride thoob plaws ntiaj teb silica matrix. Tam sim no koj yuav tsum hloov cov chloride ntawd mus rau hauv cov chlorine, vim hais tias seem ntawm chlorine, vim hais tias seem ntawm chlorine yuav ua rau muaj fiber ntau dua ntawm lub wavelengths koj tsis xav tau. Qhov no yog ib theem lub cev qhuav dej.
Kub jumps ntau: 950 -} 1050℃hauv ammonia cua. Cov ammonia tsis yog ntshiab txawm tias - nws muaj 0.25% -0.35% oxygen, uas zoo li yog tus nqi me me tab sis nws ua tib zoo tswj. Cov pa oxygen ntau thiab koj tau txais ntxov ntxov ua ntej; Tsawg heev thiab lub cev qhuav dej tsis tiav. Lub ammonia pab sawb cov pab pawg hydroxyl uas yuav txwv tsis pub nyob hauv cov qauv iav. OH⁻ pab pawg yog qhia txog kev ua kom haum peaks nyob ib ncig ntawm 1.39 μm, uas yog qhov teeb meem rau kev sib tham. Koj tuav cov mob no rau 2.5-3,5 teev. Lub Erbium Chloride hloov siab hloov mus rau erbium oxide thaum theem no.
Tom qab ntawd los sintering, zaum kawg kev sib sau ua ke. Tam sim no koj nyob hauv nitrogen dua - Tsis muaj ammonia, tsis muaj oxygen {}} ntawm 1400-1600℃rau 3-5 teev. Nov yog qhov chaw uas cov nplaim taws ntxaij vab tshaus collapses thiab silica tag nrho cov vitrifies rau iav pob tshab iav. Cov tshuaj Yawm Oxide tau tso rau hauv Silica network, tagnrho cov kev faib tawm nws tus kheej kuj tsis zoo ntawm qib molecular. Qhov kub yuav tsum tau siab txaus rau ua tiav qhov densification tab sis tsis muaj siab heev uas lub caij nyoog pib tsiv teb tsaws lossis pawg, uas yuav tsim kev xav kom muaj inhomogregities.
Dab tsi tawm yog pob tshab iav core pas nrig nrog erbium faib thoob plaws. Yog tias koj tau ua txhua yam yog, nws yuav tsum muaj cov npuas no, thiab cov khoom siv kho tshiab zoo, thiab cov khoom siv kho kom zoo nkauj los ntawm cov kauj ruam ntawm Impregnation {}}} Kuv yeej tsis phim li. Muaj ib txwm muaj qee tus poob thaum lub sijhawm ua thermal.
Cov txheej txheem sheathing
Tom qab txhua yam uas ua tib zoo ua haujlwm ntawm cov tub ntxhais, cov kauj ruam sheath yuav luag pom tau tias anticluicic, txawm tias nws tsis tseem ceeb. Cov Qws tseem ceeb xav tau cladding {{1} ib txheej ntawm iav nrog qis dua lub teeb kom muaj kev cuam tshuam rau kev xav txog tag nrho.
Koj coj koj cov quasy ua tiav thiab ntxig rau nws mus rau hauv pre -} ntaub pua ntawm lub raj. Lub raj no feem ntau yog cov ntshiab silica lossis me ntsis doped los kho lub refunt index sib piv. Cov teeb meem haum: xoob dhau thiab koj yuav ntxuaj cua; Kev nruj thiab koj yuav kis tau qee yam thaum lub sijhawm nkag. Thaum sib sau ua ke, tag nrho cov qauv rov qab mus rau hauv qhov chaw cua sov uas lawv raug rho tawm ua ke. Cov cua sov ua rau ob daim kom ua muag thiab fuse, tsim cov monolithic precorm- ib daim ntawv uas tsis muaj teeb pom kev.
Lub thermal nthuav cov coefficients ntawm cov tub ntxhais thiab cladding tsim nyog ua tau zoo, txwv tsis pub koj yuav tsim rau birgringence lossis, zuj zus, microfractures. Cov tuam ntxhab feem ntau tau sib xyaw ua ke uas lawv paub ua haujlwm ntseeg tau.
Daim duab kho qhov muag siv tau kho qhov muag
Kauj ruam kawg tshwm sim rau ntawm lub tshuab ntsuas hluav taws xob optical fiber ntau ntau, qhov twg cov preform tau muab tso rau hauv lub cub tawg txaus kom soften iav {}}}} peb hais lus tseeb 2000 degree, muab lossis noj. Raws li cov lus qhia preform zoo nkauj, lub ntiajteb txawj nqus thiab tshuab rub rub nws rau hauv ib qho kev fiber ntau. Daim duab nrawm, cua sov, thiab nruj txhua tus yuav tsum tau ua tib zoo saib xyuas kom ntaus koj lub hom phiaj uas hla, feem ntau yog 125 μm rau cladding.
Cov txheej txheem teeb duab uas siv rau ntawm no, lub ntsiab lus koj tau txais tiag tiag {0 ating tus neeg thov hla cov txheej txheem tiv thaiv, thiab noj- up spools. Cov khoom tawg hauv qhov tseem ceeb nyob hauv qhov tseem ceeb tsis tau hloov pauv thaum nqus tau thaum kos duab {}} Koj tsuas yog yuav txiav txhua yam. Tab sis daim duab tension tsis tuaj yeem siab dhau los yog koj yuav tsis muaj kev ntxhov siab hauv cov fiber uas ua rau nws ua tau zoo.
Ib qho uas tsim nyog sau cia: Txhua yam ua haujlwm los faib cov Erbium Uniformly Pauv tawm ntawm no. Muaj ib qho kev hloov pauv ntawm cov fiber, yog li koj muaj teeb meem hauv cov kauj ruam 2 lossis 3, lawv tau tas mus li tam sim no. Koj tsis tuaj yeem kho lawv, uas yog vim li cas cov theem ua ntej tau thov ntau.
Lub resulting fiber, yog tias txhua yam mus zoo, yog ib qho erbium-} lasers optify fiber ntau rau cov yam ntxwv fiber ntau, nrog rau cov yam ntxwv fiber ntau, nrog rau cov yam ntxwv ntawm lub ntsej muag nyob ntawm. Tsis phem rau dab tsi pib ua qee cov chloride ntsev thiab ib tug pas nrig ntxeem.
