Fluoride Fiber yog ib qho khoom siv kho qhov muag uas ua los ntawm fluoride iav. Tus neeg sawv cev ntawm fluoride optical fiber yog ZBLAN optical fiber, uas yog tsim los ntawm zirconium fluoride (ZrF2), barium fluoride (BaF2), lanthanum fluoride (LaF3), txhuas fluoride (AlF3), sodium fluoride (NaF) thiab lwm yam fluorides nyob rau hauv ib tug tej yam. kev faib ua feem. Feem ntau ntawm 2-10 μ Lub m wavelength enables optical kis tau tus mob. Vim tias qhov ua tau ntawm qhov tsis tshua muaj qhov tsis zoo ntawm cov fibers hauv ZBLAN fiber ntau, kev txhim kho qhov ua tau zoo rau kev sib txuas lus ntev ntawm cov khoom siv kho qhov muag tau pib, xws li nws qhov kev poob qis, uas yog nyob rau hauv 3 μ Ntawm m wavelength, nws tuaj yeem ncav cuag 1{{14. }} ^ -2 txog 10 ^ -3 dB/km, thaum quartz fiber tuaj yeem ncav cuag 1.55 dB/km μ Ntawm m, nws nyob nruab nrab ntawm 0.15 thiab 0.16dB/Km. Vim tias qhov nyuaj ntawm kev txo cov tawg tawg, ZBLAN optical fibers tsuas yog siv tau ntawm 2.4 thiab 2.7 μ Qhov ntsuas kub thiab thermal duab kis ntawm m tseem tsis tau siv dav. Tsis ntev los no, txhawm rau siv ZBLAN rau kev sib kis mus ntev, 1.3 tab tom tsim μ Praseodymium doped fiber amplifier (PDFA) nrog m.
Yas coated optical fiber ntau
Yas Clad Fiber yog ib kauj ruam hom fiber ntau uas siv high-purity quartz iav raws li cov tub ntxhais thiab yas nrog ib tug refractive index me ntsis qis dua quartz, xws li silicone, raws li lub cladding. Piv nrog quartz optical fibers, nws muaj cov yam ntxwv ntawm cov tub ntxhais tuab thiab siab tus lej aperture (NA). Yog li ntawd, nws yog ib qho yooj yim los ua ke nrog LED teeb qhov chaw, thiab qhov poob kuj yog me me. Yog li, nws yog qhov tsim nyog rau kev sib txuas hauv cheeb tsam hauv cheeb tsam (LANs) thiab kev sib txuas lus ze.
Yas optical fiber ntau
Qhov no yog fiber ntau optical uas siv cov yas (polymer) ua lub hauv paus thiab cladding. Cov khoom thaum ntxov tau siv rau kev kho kom zoo nkauj, teeb pom kev zoo, thiab kev sib txuas lus kho qhov muag nyob rau hauv ntau qhov chaw kho qhov muag. Cov ntaub ntawv tseem ceeb yog cov iav organic (PMMA), polystyrene (PS), thiab polycarbonate (PC). Qhov poob yog txwv los ntawm cov khoom siv hauv CH kev sib txuas ntawm cov yas, feem ntau ncav cuag ntau kaum ntawm dB ib mais. Txhawm rau txo qhov poob, peb tab tom tsim thiab siv Fluorosol series ntawm cov yas. Vim lub core inch ntawm yas optical fiber yog 1000 μ m. Nws yog 100 npaug loj dua ib hom quartz fiber ntau, nrog kev sib txuas yooj yim thiab khoov yooj yim. Nyob rau hauv xyoo tas los no, ua ke nrog kev nce qib ntawm broadband, kev loj hlob ntawm multimode yas optical fibers nrog gradient refractive index (GI) tau txais kev saib xyuas hauv zej zog. Tsis ntev los no, nws tau siv sai sai hauv LAN sab hauv ntawm tsheb, thiab kuj tseem tuaj yeem siv rau hauv tsev LANs yav tom ntej.
Ib hom fiber ntau
Ib hom fiber ntau yog hais txog ib qho fiber ntau uas tuaj yeem xa tawm ib hom kev nthuav tawm ntawm nws qhov ua haujlwm wavelength, feem ntau hu ua ib hom fiber ntau (SMF). Hauv cable TV thiab kev sib txuas lus kho qhov muag, nws yog qhov siv fiber ntau tshaj plaws. Vim yog cov tub ntxhais zoo ntawm cov khoom siv kho qhov muag (kwv yees li 10 μ m) Ntxiv mus, qhov ntsuas qhov cuam tshuam tau nthuav tawm ib kauj ruam zoo li kev faib khoom. Thaum qhov normalized zaus V parameter tsawg dua 2.4, theoretically, tsuas yog ib hom kis tau tus mob yuav tsim. Tsis tas li ntawd, SMF tsis muaj ntau hom dispersion, thiab tsis tsuas yog nws muaj kev sib kis ntau zaus band nrog ntau hom fibers, tab sis kuj cov khoom dispersion thiab structural dispersion ntawm SMF yog ua ke kom tshem tawm, ua rau ib tug xoom dispersion yam ntxwv nyob rau hauv nws. synthesis, uas widens kis tau tus mob zaus band ntau dua. Muaj ntau hom SMF vim qhov sib txawv ntawm dopants thiab kev tsim khoom. Lub concave clad fiber (DePr essed Clad Fiber) muaj ob lub qauv tsim los ntawm nws cov cladding. Lub cladding nyob ib sab ntawm cov tub ntxhais fiber ntau muaj qhov qis qis dua qhov qis dua ntawm sab nraud inverted cladding.
Multimode fiber ntau
Multimode fiber yog hais txog cov fiber ntau uas muaj ntau hom kev nthuav tawm raws li nws qhov ua haujlwm wavelength, hu ua multimode fiber (MMF). Fiber tub ntxhais txoj kab uas hla yog 50 μm. Vim muaj ntau pua hom kev sib kis, qhov kis tau tus mob bandwidth feem ntau yog dominated los ntawm hom dispersion piv rau SMF. Hauv keeb kwm, nws tau siv rau kev sib kis luv luv hauv cable TV thiab kev sib txuas lus. Txij li thaum qhov tshwm sim ntawm SMF fiber optic, nws zoo li tau tsim cov khoom lag luam keeb kwm. Txawm li cas los xij, qhov tseeb, vim qhov loj ntawm cov tub ntxhais txoj kab uas hla ntawm MMF piv rau SMF thiab nws yooj yim kev koom ua ke nrog cov teeb pom kev zoo xws li LEDs, MMF muaj qhov zoo dua hauv ntau LANs. Yog li ntawd, MMF tseem tau txais kev saib xyuas tshiab hauv kev sib txuas lus luv luv. Muaj ob hom MMF kev faib tawm raws li kev faib tawm qhov ntsuas qhov taw qhia: gradient (GI) hom thiab qib (SI) hom. Lub refractive index ntawm GI hom yog siab tshaj plaws ntawm qhov chaw ntawm cov tub ntxhais fiber ntau thiab maj mam txo qis raws cladding. Vim yog qhov kev xav thiab kev loj hlob ntawm SI hom lub teeb nthwv dej hauv cov khoom siv kho qhov muag, lub sijhawm sib txawv ntawm txoj kev sib txawv ntawm lub teeb raug tsim, ua rau muaj kev cuam tshuam ntawm lub teeb tsis muaj zog thiab cov xim tseem ceeb. Qhov tshwm sim yog qhov sib kis tau yooj yim dua thiab siv tsawg dua ntawm SI hom MMF.
