Cov Hom Fiber Optics rau Daim Ntawv Thov Sib Txawv
Daim ntawv thov ntawm lub laj kab hluav taws xob fiber ntau tau siv ntau dua, txawm li cas los xij, nco ntsoov tias, nyob rau hauv lub ntsej muag ntawm qhov sib txawv daim ntawv thov yuav tsum tau, kev siv hluav taws xob optical fiber tseem yog qhov yuav tsum tau ua los ntawm kev sib txawv. Cov ntaub ntawv thov kev soj ntsuam ntawm optical fiber ntau nyob rau hauv ntau lub network kho qhov muag txiav txim siab kev ua haujlwm ntawm cov khoom siv fiber ntau. Qhov sib txawv cov hluav taws xob fiber ntau ntawm cov kab ke fiber ntau optic siv cov ntawv thov kev sib txawv tshuab.
Cov khoom sib kis fiber ntau
Daim ntawv thov ntawm cov optical fiber hauv lub xa kis, thawj zaug nws tau paub los ntawm ntau cov sib txawv network sib txuas. Txog rau tam sim no, kev tsim kho ntawm ntau yam ntawm fiber ntau qhov muag kis tau tus mob network topology tuaj yeem muab faib ua peb pawg: hnub qub, tsheb npav thiab lub nplhaib. Ntxiv mus ntawm lub network hierarchical pwm zoo lawm, thiab tuaj yeem sib koom tes los ntawm sab saum toj mus rau hauv qab tau muab faib ua ob peb txheej, txhua txheej yuav raug muab faib ua ob peb qhov subnets. Ntawd yog, lub network thiab lub network sib txuas ntawm txhua qhov chaw hloov chaw thiab nws cov khoom sib kis tseem tuaj yeem txuas ntxiv taw kev faib ua ob peb pawg me, kom tag nrho digital network tuaj yeem sib txuas lus tau kev pabcuam, tag nrho cov kev pabcuam digital network (ISDN) yog tag nrho lub hom phiaj ntawm kev sib txuas lus network. Ua kom muaj koob meej ntawm ADSL thiab CATV, metro nkag mus muaj peev xwm kaw tau lub nraub qaum network nthuav dav xav tau siv rau ntau hom fiber ntau qhov
optic xa cov haujlwm tseem ceeb.
Cov dispersion-compensating fiber ntau (DCF)
Fiber optic dispersion tuaj yeem ua rau tus mem tes nthuav dav, thiab ua rau me ntsis ua yuam kev. Nov yog ib qho kev xav los daws qhov teeb meem uas yuav tsum zam hauv kev sib txuas lus sib txuas lus, tab sis kuj xa xov xa mus ntev. Feem ntau hais lus, cov fiber ntau optic dispersion, suav nrog ob feem ntawm kev faib tawm ntawm cov khoom tawg thiab cov qauv waveguide, kev tawg, nyob ntawm qhov tsim khoom ntawm silica optical fiber optic niam khoom thiab dopant cov khoom tawg thiab waveguide dispersion yog feem ntau qauv ntawm cov zoo refractive index nrog wavelength hloov nyiam. Lub dispersion compensating optical fiber optic siv nyob rau hauv kis tau tus mob kom daws tau cov txheej txheem kev tswj kev tawg.
Ua kom haum cov khoom siv fiber ntau kho qhov muag
Muaj peev xwm ua kom tsis tshua muaj lub ntiaj teb-doped silica fiber optic tseem ceeb hauv cov hluav taws xob fiber ntau optic, xws li erbium-doped amplifying optical fiber optic (EDF), thulium-doped amplifying fiber ntau optic (TOF), thiab lwm yam, Amplification fiber ntau kho qhov muag thiab tsoos quartz. optical fiber optic muaj kev sib xyaw ua ke ntawm kev ua tau zoo, tab sis kuj muaj cov txiaj ntsig zoo, kev siv dav dav, lub suab qis, thiab lwm yam zoo. Ua los ntawm optical fiber optic amplifier (EDFA) nyob rau hauv lub tshuab hluav taws xob fiber ntau yog siv dav hauv qhov tam sim no kev xa xov tseem ceeb cov cuab yeej. EDF ua kom nrov zog bandwidth los ntawm C-band (1530 1560nm) txuas ntxiv rau L-band (1570 1610), qhov ua kom pom tseeb bandwidth ntawm 80nm. Cov ntaub ntawv tshawb fawb kawg tau qhia tias EDF kuj tseem muaj nyob rau hauv S-band (1460 1530), kev ua kom pom tseeb, thiab induction Raman fiber ntau kho qhov muag tau tsim hauv S-band amplification.
Nruam nthwv dej (SC) tshwm sim nrog fiber ntau
Supercontinuum nthwv dej yog qhov pom tshwm sim ntawm ultra-wideband xa cov teeb pom kev muaj zog ntau ntxiv hauv nruab nrab pob tshab. Cov kev txhawj xeeb thoob plaws hauv kev lag luam yog qhov kev tsim hluav taws xob tshiab tshiab ntawm ntau lub teeb xa hluav taws xob. Txij li xyoo 1970 Alfano thiab shapiro pom hauv qhov loj-muaj peev xwm iav ultra-broadband teeb txij li, nws tau dhau los pom nyob rau hauv cov hluav taws xob kho qhov muag, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, dej, thiab lwm yam khoom siv sib txawv ultra broadband teeb tshwm sim.
Cov khoom siv khoos phis tawm nrog optical fiber ntau
Nrog coob tus kho qhov muag sib txuas lus siv network thiab nthuav dav, nquag thiab passive Cheebtsam siv ntau zuj zus. Cov khoom siv dav dav siv fiber ntau hauv lub tshuab, lub ntsiab ntawm cov kab hluav taws xob fiber ntau txuas ntxiv, cov tshuab hluav taws xob fiber ntau txuas ntxiv, cov yoj hluav taws xob ua cov kab hluav taws xob fiber optic grating (FG), AWG. Cov cuab yeej hluav taws xob saum toj no yuav tsum muaj qhov poob qis, muaj kev ntseeg siab, yooj yim poob qis txuas thiab kev sib txuas tuaj yeem siv rau hauv kev sib txuas lus sib txuas lus thiab kev sib txuas lus optical fiber ntau. Yog li ntawm R & D los ua FG fiber ntau kho qhov muag thiab khoom siv txuas nrog cov khoom siv fiber ntau (LP fiber optic).
Kev tswj cov plaub muag kev ua kom muaj fiber ntau
Qhov kev sib txuas tau zoo tshaj plaws ua ntej tswj kev ua cov paib fiber ntau rau kev ua kom muaj cov pa hluav taws xob fiber ntau kho kom haum. Txij thaum ntawd los, qhov teb ntawm fiber ntau optic sensor technology rau FOG. Xyoo tsis ntev los no, vim qhov nce ntawm cov xov tooj sib kis DWDM hauv WDM thiab qhov nrawm nrawm ntawm txoj kev loj hlob, qhov kev tuav tswj tswj tau cov fiber ntau tau siv dav dua. Tam sim no feem ntau dav Panda fiber ntau qhov muag (PANDA).
