Koj puas paub Cov Ntsiab Lus thiab Hom Fiber Optical?

Hom ntawm Optical Fiber:

Muaj ntau hom fiber ntau optical, thiab cov haujlwm thiab kev ua haujlwm yuav tsum tau sib txawv raws li kev siv sib txawv. Tab sis rau cable thiab kev sib txuas lus fiber ntau optics, cov qauv tsim thiab kev tsim khoom yog tib yam, xws li:

① poob me me;

② Nws muaj qee qhov bandwidth thiab me me dispersion;

③ Yooj yim txuas;

(4) yooj yim los ua ib tug series;

(5) Kev ntseeg siab;

⑥ Kev tsim khoom yooj yim;

⑦ Pheej yig thiab lwm yam.

Kev faib tawm ntawm fiber ntau optical yog cov ntsiab lus los ntawm kev ua haujlwm wavelength, refractive index faib, hom kis, cov khoom siv raw thiab kev tsim khoom.Nov yog qee qhov piv txwv ntawm ntau yam kev faib tawm.

(1) Ua hauj lwm wavelength: ultraviolet fiber, observant fiber, ze-infrared fiber, infrared fiber (0.85μm, 1.3μm, 1.55μm).

(2) refractive index faib: kauj ruam (SI) fiber, ze ntawm kauj ruam fiber, gradient (GI) fiber, lwm yam (xws li daim duab peb sab, W, concave, thiab lwm yam).

(3) Hom kev sib kis: ib hom fiber ntau (xws li polarized tuav fiber ntau, tsis muaj polarized tuav fiber ntau), ntau hom fiber ntau.

(4) Cov khoom siv raw: quartz fiber ntau, ntau cov iav fiber ntau, yas fiber ntau, cov khoom siv fiber ntau (xws li cov yas cladding, kua fiber ntau, thiab lwm yam), cov ntaub ntawv infrared, thiab lwm yam. carbon, thiab lwm yam), cov ntaub ntawv hlau (tooj liab, npib tsib xee, thiab lwm yam), thiab yas.

(5) Txoj kev tsim khoom: kev tsim ua ntej muaj xws li vapor-phase axial deposition (VAD), tshuaj vapor theem deposition (CVD), thiab lwm yam., thiab cov qauv kos duab suav nrog Qws hauv ib lub raj thiab ob txoj kev crucible.

Quartz Fiber ntau

Silica Fiber siv silica (SiO2) ua cov khoom siv tseem ceeb thiab tswj cov kev faib tawm ntawm cov tub ntxhais thiab cladding raws li cov khoom sib txawv. Quartz (iav) series kho qhov muag fiber ntau, nrog kev siv tsawg, thiab cov yam ntxwv dav dav, tau siv dav hauv cable TV thiab kev sib txuas lus.

Qhov kom zoo dua ntawm quartz iav fiber ntau yog qhov poob qis, thaum lub qhov muag wavelength yog 1. 2 dB/km.

Fluorine-doped Fiber ntau

Doped Fluorine Fiber yog ib qho ntawm cov khoom lag luam ntawm quartz optical fiber. Feem ntau, germanium dioxide (GeO2) yog dopant nyob rau hauv kev tswj core ntawm kev sib txuas lus fiber ntau nyob rau hauv 1.3μm yoj domain, thiab cladding yog ua los ntawm SiO2. Tab sis cov tub ntxhais ntawm fluorine fiber ntau, feem ntau yog siv SiO2, thiab hauv cladding yog tov nrog fluorine. Vim tias Rayleigh tawg tawg yog qhov tshwm sim tawg los ntawm kev hloov pauv ntawm qhov ntsuas qhov ntsuas. Yog li ntawd, nws cia siab tias yuav tsim qhov refractive index ntawm doping yam, tsawg dua yog zoo dua. Qhov kev txiav txim ntawm fluoride yog tsuas yog los txo cov refractive index ntawm SIO2. Yog li ntawd, nws yog feem ntau siv rau doping cladding.

Piv nrog rau lwm cov ntaub ntawv fiber ntau, quartz fiber ntau muaj qhov dav ntawm lub teeb xa tawm ntawm lub teeb ultraviolet mus rau lub teeb ze-infrared thiab tuaj yeem siv rau kev teeb pom kev zoo thiab cov duab xa mus ntxiv rau kev sib txuas lus.

Infrared Fiber ntau

Kev ua haujlwm wavelength ntawm quartz series fiber ntau, uas yog tsim rau kev sib txuas lus kho qhov muag, tsuas yog 2μm, tab sis nws yog siv rau kev sib kis luv luv. Vim li no, tuaj yeem ua haujlwm nyob rau hauv qhov ntev infrared wavelength, cov tsim fiber ntau hu ua infrared fiber. Infrared Optical Fiber feem ntau yog siv los xa lub teeb lub zog. Piv txwv li kev ntsuas kub, thermal duab kis tau tus mob, laser scalpel kho mob, thermal zog ua, thiab lwm yam, qhov nrov tus nqi tseem tsawg.

Composite Optical Fiber

Compound Fiber yog ib hom ntawm cov iav fiber ntau ua los ntawm kev sib xyaw oxides xws li sodium oxide (Na2O), boron oxide (B2O3), thiab potassium oxide (K2O) hauv SiO2 raw cov ntaub ntawv. Cov iav ntau yam muaj qhov qis qis dua li cov iav quartz thiab qhov sib txawv loj hauv qhov ntsuas qhov ntsuas ntawm qhov tseem ceeb thiab cladding. Lub fiber optic endoscope yog siv feem ntau hauv kev kho mob.

Fluoride Fiber ntau

Fluoride Fiber yog ua los ntawm fluoride iav. Tus neeg sawv cev ntawm fluoride fiber yog ZBLAN fiber, uas nws raw khoom yog zirconium fluoride (ZrF2), barium fluoride (BaF2), lanthanum fluoride (LaF3), txhuas fluoride (AlF3), sodium fluoride (NaF), thiab lwm yam fluoride raws li ib tug qee qhov kev faib ua feem ntawm kev sib xyaw ua ke. Optical kis tau tus mob yog ua tiav ntawm 2 ~ 10μm wavelength. Vim tias qhov ua tau ntawm ultra-low fiber ntau poob, ZBLAN fiber ntau yog tsim los rau qhov ua tau ntawm kev sib txuas lus ntev fiber ntau. Piv txwv li, nws txoj kev poob qis tuaj yeem ncav cuag 10^-2 ~ 10^-3 dB/km ntawm 3μm wavelength, thaum quartz fiber tuaj yeem ncav cuag 0.15 ~ 0.16dB / Km ntawm 1.55μm wavelength. ZBLAN fiber ntau yog qhov nyuaj los txo qhov tawg tawg, tsuas yog siv tau rau hauv 2.4 ~ 2.7μm kub sensitizer thiab thermal duab kis tau tus mob, thiab tsis tau siv dav. Tsis ntev los no, 1.3μm Praseodymium doped fiber amplifier (PDFA) tab tom tsim los siv ZBLAN rau kev sib kis mus ntev.

Yas-coated Optical Fiber

Yas Clad Fiber (Plastic Clad Fiber) yog ua los ntawm high-purity quartz iav raws li cov tub ntxhais fiber ntau, thiab yas nrog ib tug me ntsis qis refractive index tshaj quartz, xws li silica gel, raws li cladding kauj ruam hom fiber ntau. Piv nrog quartz fiber ntau, nws muaj cov yam ntxwv ntawm cov tub ntxhais tuab thiab cov lej aperture siab (NA). Yog li ntawd, nws yog ib qho yooj yim los ua ke nrog lub teeb ci LED, thiab qhov poob yog me dua. Yog li ntawd, nws yog qhov tsim nyog rau thaj chaw hauv cheeb tsam network (LAN) thiab ze rau kev sib txuas lus.

Tib hom Fiber

Ib hom fiber ntau Qhov no yog hais txog cov fiber ntau uas tuaj yeem kis tau tsuas yog ib hom hauv kev ua haujlwm wavelength. Nws feem ntau hu ua ib hom fiber ntau (SMF: Single-ModeFiber). Optical fiber ntau yog siv dav hauv cable TV thiab kev sib txuas lus kho qhov muag. Vim tias cov tub ntxhais fiber ntau nyias nyias (li 10μm) thiab qhov ntsuas qhov ntsuas tsis zoo yog cov kauj ruam faib, qhov ua haujlwm zaus V parameter < 2.4, hauv kev xav, tsuas yog ib hom kev sib kis tuaj yeem tsim tau. Tsis tas li ntawd, SMFS tsis muaj ntau hom dispersion, uas tsis tsuas yog nthuav dav cov optical fiber ntau kis tau tus mob, tab sis kuj ua rau ntxiv tshem tawm ntawm cov khoom dispersion thiab structural dispersion ntawm SMFS, uas nws cov khoom hluavtaws raws nraim tsim cov yam ntxwv ntawm xoom dispersion. , yog li broading lub kis tau tus mob band. Muaj ntau ntau hom SMFS vim txawv dopants thiab ntau txoj kev tsim khoom. Hauv kev siv Clad Fiber, lub cladding yog ob-fold, thiab cov cladding uas nyob ib sab ntawm cov tub ntxhais yog qhov qis dua qhov taw qhia dua li sab nrauv folded cladding.

Multimode Fiber ntau

Multi-mode fiber Ib hom fiber ntau optical uas nws txoj kev nthuav tawm muaj ntau yam raws li nws txoj haujlwm wavelength hu ua ntau hom fiber ntau (MMF: MUlti ModeFiber). Cov tub ntxhais txoj kab uas hla yog 50μm, thiab kis tau tus mob bandwidth yog dominated los ntawm hom dispersion piv nrog SMFS vim muaj ntau pua hom kis tau tus mob. Keeb kwm siv rau kev sib kis luv luv hauv cable TV thiab kev sib txuas lus. Txij li thaum cov tsos ntawm SMF fiber ntau, nws zoo li tau tsim cov khoom lag luam keeb kwm. Hauv kev xyaum, MMFS muaj qhov zoo dua Lans vim lawv txoj kab uas hla loj dua li SMFS thiab lawv qhov yooj yim ntawm kev sib txuas nrog LEDs thiab lwm yam teeb pom kev zoo. Yog li ntawd, MMFS tau txais kev saib xyuas tshiab hauv kev sib txuas lus luv luv. Thaum MMFS tau muab cais raws li qhov kev faib tawm qhov ntsuas qhov taw qhia, muaj ob hom: gradient (GI) hom thiab qib (SI) hom. Lub refractive index ntawm GI hom yog siab tshaj nyob rau hauv lub core center thiab maj mam txo nyob rau hauv lub cladding. Vim yog SI-hom lub teeb nthwv dej nyob rau hauv cov txheej txheem ntawm kev xav thiab nce qib hauv fiber ntau, lub sijhawm sib txawv ntawm txhua txoj kev teeb yuav raug tsim tawm, ua rau muaj kev cuam tshuam ntawm lub teeb yoj tawm thiab cov xim loj dua. Raws li qhov tshwm sim, kev sib kis bandwidth yog nqaim thiab daim ntawv thov ntawm SI MMF tsawg dua.

Cov ntaub ntawv tiv tauj:

Yog tias koj muaj lus nug, thov hu rau peb. Txawm peb cov neeg muas zaub nyob qhov twg thiab peb cov kev xav tau yog dab tsi, peb yuav ua raws li peb lub hom phiaj los muab peb cov neeg siv khoom zoo, tus nqi qis, thiab kev pabcuam zoo tshaj plaws.