Kev faib tawm ntawmoptical fiber ntau
Optical Fiber luv luv rau Optical Fiber, tab sis nyob rau hauv Optical kev sib txuas lus systems, Optical Fibe feem ntau yooj yim rau Fiber, vim hais tias technology siv los tsim nws yuav ua rau nws nyias li cov plaub hau.
Kev faib tawm ntawm fiber ntau optical, xws li: Fiber Amplifier lossis Fiber Backbone thiab lwm yam. Qee tus neeg tau saib xyuas lub ntsiab lus ntawm Fiber, tab sis nyob rau hauv qhov system kho qhov muag, nws hais txog fiber ntau optical. Yog li ntawd, cov lus txhais ntawm fiber ntau li "fiber" hauv qee qhov kev piav qhia ntawm cov khoom siv kho qhov muag tsis pom tseeb. Optical fiber tiag tiag yog hais txog cov khoom pob tshab ua los ntawm cov tub ntxhais fiber ntau thiab cov khoom nyob ib puag ncig nrog qhov ntsuas qis me ntsis dua li cov tub ntxhais fiber ntau ua los ntawm cladding, thiab cov teeb liab kho qhov muag rau hauv cov tub ntxhais fiber ntau, cuam tshuam los ntawm cladding interface, yog li ntawd cov khoom siv kho qhov muag. teeb liab hauv cov tub ntxhais fiber ntau kis mus rau hauv xov xwm. Muaj ntau hom fiber ntau optical, thiab cov haujlwm thiab kev ua haujlwm yuav tsum sib txawv raws li lawv siv. Tab sis rau cable TV thiab kev sib txuas lus kho qhov muag fiber ntau, nws cov qauv tsim thiab kev tsim khoom yog tib yam, xws li: (1) poob me me; (2) muaj qee qhov bandwidth thiab me me dispersion; (3) Ib qho yooj yim xaim; (4) yooj yim rau daim ntawv; ⑤ Kev ntseeg siab; ⑥ Kev tsim khoom yog qhov yooj yim; ⑦ Pheej yig thiab lwm yam.
Kev faib tawm ntawm cov fibers optical feem ntau yog sau los ntawm kev ua haujlwm wavelength, refractive index faib, kis hom, raw khoom thiab kev tsim khoom. (1) Ua haujlwm wavelength: ULTRAVIOLET fiber ntau, observable fiber, ze infrared fiber, infrared fiber (0.85μm, 1.3μm, 1.55μm). (2) Refractive index faib: Kauj ruam (SI) hom, ze hom kauj ruam, gradient (GI) hom, lwm yam (xws li daim duab peb sab hom, W hom, concave hom, thiab lwm yam). (3) Hom kev sib kis: ib hom fiber ntau (xws li polarization tuav fiber ntau thiab tsis muaj polarization tuav fiber ntau), ntau hom fiber ntau. (4) Cov ntaub ntawv raw: quartz iav, ntau lub iav iav, yas, cov ntaub ntawv sib xyaw (xws li 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, thiab lwm yam. (5) Kev tsim qauv: pre-yas vapor theem axial deposition (VAD), tshuaj vapor theem deposition (CVD), thiab lwm yam., hlau txoj kev kos duab muaj txoj cai raj (Qws Intube) thiab ob txoj kev crucible, thiab lwm yam.
100 lab optical fiber ntau
Ib qho 100 megabit fiber ntau txuas nrog ntawm tus nqi ntawm 100 megabitspersecond (MBPS), uas tau qhia hauv cov khoom ntau dua li ib txwm bytes ntawm cov ntaub ntawv loj thiab rub tawm ceev. Byte yog ib byte, thiab cov khoom yog binary ntsis. 1byte=8bits. Qhov tseeb ceev yuav tsum yog 100x1024/8, lossis txawm tias qis dua yog tias koj ua rau hauv kab poob.
Feem ntau hais lus, kev rub tawm ceev ntawm 250KB / SEC, ADSL bandwidth xav tau txog 2M, kom ncav cuag qhov nrawm ntawm 2MB / SEC pom los ntawm 360 network ceev tester, bandwidth xav tau 10M txog 20M, tsuas yog cov neeg siv fiber ntau tuaj yeem ncav cuag, vim tias qhov uplink. thiab downlink ntawm fiber ntau yog sib npaug.
Txhawm rau kom nkag siab txog kev sib kis ceev hauv network, nws yog ib qho tseem ceeb kom nkag siab txog cov units ntawm network kis ceev. Chav tsev ntawm gigabit lossis gigabit network yog BPS (ntsis tus nqi, piv txwv li ntsis ib ob, ntsis / s). Piv txwv li, kev sib kis ceev ntawm daim npav network lossis fiber ntau yog gigabit, uas txhais tau tias 100Mbps. Hauv kev siv tswv yim (Widnwos, Internet Express, Thunderbolt, thiab lwm yam) hloov chaw yog Byte / s. Hauv cov khoos phis tawj, ib byte sib npaug yim ntsis, yog li 100 megabits ntawm fiber ntau sib npaug rau 12.5 Megabits ib ob (uas yog 100 MBPS ib thib ob faib los ntawm 8). Ntau tus neeg kuj txhais qhov ceev ntawm lub network raws li ib chav tsev ntawm Byte / s, yog li nws zoo nkaus li yog tias tus cab kuj tsis faib cov bandwidth txaus. Qhov no tsuas yog tus nqi theoretical xwb, daim ntawv thov tiag tiag yuav raug cuam tshuam los ntawm ntau yam, electromagnetic, computer, server, network congestion, thiab lwm yam, feem ntau hais lus, tsuas tuaj yeem ncav cuag tus nqi theoretical ntawm 70 feem pua rau 80 feem pua, qee daim npav network tuaj yeem ncav cuag. 90 feem pua.
Optical fiber raw khoom
Quartz fiber ntau yog ib hom fiber ntau nrog silica (SiO2) raws li cov khoom tseem ceeb, thiab cov khoom siv refractive index faib ntawm fiber core thiab cladding yog tswj raws li qhov sib txawv doping nqi. Quartz (iav) series ntawm fiber ntau kho qhov muag, nrog kev noj tsawg, cov yam ntxwv dav dav, tau siv dav hauv cable TV thiab kev sib txuas lus. Fluorine - Doped Fiber yog ib qho ntawm cov khoom siv silica Fiber. Feem ntau, doped germanium dioxide (GeO2) yog siv los tswj cov tub ntxhais ntawm kev sib txuas lus kho qhov muag fibers hauv 1.3pm nthwv dej domain, thiab cladding yog ua los ntawm SiO. Tab sis fluorine fiber core, feem ntau ntawm kev siv SiO2, thiab hauv cladding yog tov nrog fluorine. Rayleigh scattering poob yog lub teeb tawg tshwm sim tshwm sim los ntawm kev hloov pauv ntawm qhov ntsuas qhov ntsuas. Yog li ntawd, nws yog qhov zoo dua kom muaj cov dopants tsawg dua los tsim cov refractive index variation yam. Fluorine tuaj yeem txo qhov ntsuas qhov ntsuas ntawm SiO2. Yog li ntawd, nws yog feem ntau siv rau cladding doping. Vim tias cov tub ntxhais fiber ntau ntawm fluorine doped fiber ntau tsis muaj cov tshuaj fluorine dopants uas cuam tshuam rau qhov ntsuas refractive. Vim tias nws cov Rayleigh tawg yog me me heev thiab qhov poob yog ze rau qhov qis tshaj theoretical tus nqi. Yog li nws feem ntau yog siv rau qhov ntev-ntev optical teeb liab kis tau tus mob. Piv nrog rau lwm yam ntaub ntawv, Silica Fiber muaj ib tug dav spectrum ntawm lub teeb los ntawm ultraviolet lub teeb mus rau ze lub teeb infrared. Nws yog qhov tsim nyog rau kev coj lub teeb thiab ua cov duab ntxiv rau kev sib txuas lus.
