2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28
Nyob rau hauv lub seventies nws tau los ua fashionable heev kom muaj hmo ntuj teeb nyob rau hauv lub chav pw, muaj ib tug hemispherical sawv thiab ib pawg ntawm waveguides sticking tawm ntawm nws. Nyob rau hauv qhov tsaus ntuj nti, qhov no tsim emitted ib tug dim lub teeb nyob rau hauv daim ntawv ntawm me me dots burning ntawm lub tswv yim ntawm nyias translucent fibers. Qhov no zoo nkauj tiag tiag yog tsim los ntawm cov khoom pov tseg ntawm ib hom tshiab ntawm cov ntaub ntawv conductors. Lawv lub npe yog optical cables (lwm yam - FOCL, uas yog, fiber-optic kev sib txuas kab)
Txoj cai ntawm FOCL
Txhua tus neeg xyuas hluav taws xob muaj qhov ua haujlwm tsis zoo, tsis yog tsuas yog ua haujlwm xwb, tab sis kuj tseem muaj zog (capacitive thiab inductive). Cov kev ntsuas lub cev no nyob ntawm txoj kab uas hla ntawm cov xaim, nws cov khoom yoj thiab, ntawm chav kawm, qhov ntev ntawm txoj kab txuas lub teeb liab xa mus rau cov khoom tau txais. High-frequency channels tshwj xeeb tshaj yog rhiab heev rau qhov zoo ntawm kev sib txuas lus channel. Lub fiber-optic cable tsis muaj qhov tsis zoo no, qhov kev poob hauv nws yog incomparably tsawg dua li cov neeg siv hluav taws xob zoo tib yam, vim tias cov ntaub ntawv nqa khoom yog lub teeb lub zog. Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm channel yog qhov tseeb thiab yooj yim heev. Lub teeb liab hloov los ntawm hluav taws xob mus rau qhov muag pom yog siv rau cov tswv yim ntawm cov kab sib txuas lus. Ntawm qhov tso zis, nws yog demodulated, thiab nws nkag mus rau qhov tau txais thiab cov ntaub ntawv ntaus ntawv twb nyob rau hauv daim ntawv ntawm cov paub voltage pulses.
Qhov zoo ntawm fiber ntau channel
Ntxiv nrog rau kev tiv thaiv kev cuam tshuam thiab txo qis, kho qhov muag cables muaj lwm yam zoo heev. Thaum xa cov ntaub ntawv hla cov xov tooj fiber ntau, nws yooj yim dua los tswj nws qhov tsis pub lwm tus paub, vim nws yuav luag tsis tuaj yeem txuas rau lawv cov lus zais. Lwm qhov zoo dua ntawm txoj kev sib kis no yog kev lag luam. Tooj liab yog cov hlau tsis muaj hlau thiab kim; cov ntaub ntawv waveguide muaj tus nqi pheej yig dua. Cov kab hluav taws xob kho qhov muag yog tsim los ntawm quartz lossis cov khoom siv tshwj xeeb polymer (fluoro-aluminate lossis fluorine-zirconate), uas, ntxiv rau (peb qhov zoo dua) yog qhov sib zog dua li cov hlau conductors, uas tseem yuav tsum tau tiv thaiv.
Qhov tsis zoo ntawm kev sib txuas lus kho qhov muag
Yog, kho qhov muag cables, zoo li txhua yam hauv ntiaj teb no, tsis muaj qhov tsis zoo.
Ua ntej, txhawm rau txhim kho kev sib txuas lus thaum muaj kab tawg, nws yog ib qho tsim nyog los hloov tag nrho cov seem uas puas lawm, waveguides tsis raug rau splicing, yog li, kev kho kev ua haujlwm yuav kim dua.
Thib ob, kev teeb tsa ua haujlwm kuj tsis pheej yig. Lawv xav tau cov cuab yeej precision, uas yog kim. Thiab cov kev tsim nyog ntawm cov kws tshwj xeeb xav tau ntau, thiab lawv yuav tsum tau them raws li.
Thirdly, mus rau lub teeb liab converters ntawm lub tswv yimthiab cov khoom tso tawm ntawm cov kab, nrog rau cov khoom sib txuas (cov cuab yeej uas muab kev hloov pauv), muaj cov kev xav tau siab heev rau kev ntseeg siab, kev poob qis, thiab qhov tseeb. Tus nqi zoo tsis tas yuav piav qhia rau leej twg.
Kev sib txuas lus yav tom ntej
Thiab tseem muaj ntau qhov zoo dua. Cov kab hluav taws xob kho qhov muag tuaj yeem xa cov teeb liab broadband, uas ua rau kom ceev ntawm kev sib pauv ntaub ntawv (kuaj twb nyob rau hauv Terabits ib ob). Nyob rau tib lub sijhawm, qhov attenuation yog qhov me me (ntawm lub wavelength ntawm 1.55 microns, nws tsuas yog 0.22 dB / km). Tsis tas li ntawd, lub peev xwm ntawm lub teeb tsis txav mus rau qhov sib txawv (nrog cov polarizations sib txawv) hauv ib tus neeg xyuas pib nce lub peev xwm ntawm FOCL. Lawv kev cog qoob loo txuas ntxiv mus.
Pom zoo:
Ntsuas yam tsis tau ncua sijhawm thiab rov kos dua: hom, lub hauv paus ntsiab lus ntawm kev ua haujlwm, qhov zoo thiab qhov tsis zoo ntawm daim ntawv thov, cov lus qhia kws tshaj lij
Muaj ntau yam cuab yeej sib txawv hauv kev ua lag luam: kev tsim duab nraaj, ntsuas kev paub, cov kev pab cuam tsis siv neeg, kev lag luam teeb liab thiab ntau ntxiv. Txhawm rau ua tiav lawv hauv kev lag luam, koj yuav tsum nkag siab tias lawv ua haujlwm li cas. Qhov taw qhia yam tsis muaj ncua sij hawm thiab redrawing yog tshwj xeeb tshaj yog nrov nrog cov tub luam
Gas lossis hluav taws xob: dab tsi yog pheej yig dua, qhov zoo dua rau cua sov, qhov zoo thiab qhov tsis zoo
Cov neeg nyob hauv cov tsev tsis muaj kev xaiv, thiab raws li txoj cai, lawv tsis muaj lus nug txog seb nws puas pheej yig dua rau cua sov hauv tsev: roj lossis hluav taws xob. Txawm li cas los xij, qhov teeb meem no feem ntau nyob hauv lub siab ntawm cov tswv ntawm cov tsev ntiag tug. Tom qab tag nrho, kev xaiv ntawm ib qho ntawm cov kev xaiv nyob ntawm tsis yog tsuas yog nyob ntawm qhov yooj yim ntawm kev khiav hauj lwm cov cua sov, tab sis kuj nyob ntawm tus nqi ntawm cov nqi nyiaj txhua hli
Studio lossis studio chav tsev: qhov twg zoo dua? Qhov zoo thiab qhov tsis zoo ntawm lub studio
Studio or studio apartment? Qhov no yog dab tsi yuav tau tham nyob rau hauv lub moj khaum ntawm cov khoom no. Rau leej twg yog qhov dav studio qhov kev xaiv yeej-yeej, thiab rau leej twg yog qhov zoo dua los muab kev nyiam rau cov qub ntaus classics hauv daim ntawv ntawm ib chav tsev?
Cov Neeg Sawv Cev Kho Mob: Lub luag haujlwm tseem ceeb thiab cov qauv rov ua dua. Qhov zoo thiab qhov tsis zoo ntawm txoj haujlwm
Nyob rau niaj hnub Lavxias teb sab kws lag luam niaj hnub no muaj kev hloov zoo, nws txoj kev loj hlob nquag tau pom. Vim muaj kev qhia txog kev tsim cov thev naus laus zis tshiab thiab kev txhawb nqa tshuaj los ntawm cov tuam txhab tsim khoom hauv tsev, lawv tus kheej kev sib tw nce ntxiv
Dab tsi yog kim dua - granite lossis marble: yam ntxwv, qhov zoo thiab qhov tsis zoo, qeb nqe
Thaum xaiv lub pob zeb, ib tus yuav tsum xav txog kev ua haujlwm tseem ceeb, thiab tsis yog qhov zoo nkauj xwb. Cov lus nug ntawm dab tsi yog kim dua - marble los yog granite rau ib tug monument - yog nug los ntawm ntau. Tab sis cov nqi ntawm ob qho tib si marble thiab granite muaj ntau haiv neeg
