Kubva mukupera kwema1980, fiber-optic communications zvishoma nezvishoma yakashanduka kubva kupfupi-wavelength kuenda kure-wavelength, kubva kune multimode fiber kuenda kune imwe-modhi fiber.Parizvino, single-mode fiber inoshandiswa zvakanyanya muNational cable trunk network uye provincial trunk line network.Multimode fiber inongogumira kune mamwe maLAN ane low speed.Parizvino, fiber iyo vanhu vanotaura nezvayo inoreva imwe-mode fiber.Single-mode fiber ine zvakanakira kurasikirwa kwakaderera, hombe bandwidth, nyore kusimudzira nekuwedzera, uye yakaderera mutengo, uye inoshandiswa zvakanyanya.
Sezvo zvido zvehupenyu zvevanhu zvichiwedzera kuwedzera, Indaneti inova chikamu chakakosha chehupenyu.Kuti ienderane nekuvandudzwa kwezera remashoko, teknolojia yekubatanidza wiring uye zvigadzirwa zvinogara zvichivandudzwa, kunyanya tsvakurudzo yakakura uye kugadzirwa kwetambo dzefiber optic. .Kune akawanda akasiyana marudzi efiber optic tambo dzemhando dzakasiyana uye mashandisiro mumusika.Nzira yekusarudza sei rudzi runoshanda pamberi peakawanda optical fibers?Nzira yekusarudza yakanakisa mhando fiber optic zvigadzirwa?
Zvikamu zvikuru zve optical fiber
Zvinoenderana neiyo transmission mode classification, iyo optical fiber ine mhando mbiri dzemultimode fiber uye imwechete mode fiber.Multimode fiber inogona kufambisa akati wandei modes, nepo imwe modhi faibha inogona chete kufambisa imwe modhi kune yakapihwa yekushanda wavelength.Iyo inowanzoshandiswa multimode fibers inonyanya 50 / 125m uye 62.5 / 125m.Iyo dhayamita yepakati yeimwe mode fiber inowanzoita 9/125 m.Multimode fiber-iyo yakakosha yakakura (50 kana 62.5m).Sezvo iyo geometry yefiber (kunyanya iyo dhayamita yepakati d1) yakakura kudarika wavelength yechiedza (inenge 1 micron), kune akawanda kana kunyange mazana emafiber.Propagation mode.Panguva imwecheteyo, nekuda kwekupararira kukuru pakati pemamodhi, kuwanda kwekutapurirana kunogumira, uye kuwedzera nedaro kunonyanya kuoma.Maererano nemaitiro ari pamusoro apa, multimode optical fibers inonyanya kushandiswa mumambure ane mwero wakaderera wekutapurirana. uye madaro mapfupi ekutapurirana, senge network yenharaunda.Manetiweki akadaro anowanzo aine node dzakawanda, majoini mazhinji, mabhende mazhinji, uye majoini nemacouplers.Nhamba yezvikamu, nhamba yezvishandiso zvinoshandiswa zvinoshandiswa payuniti fiber urefu, nezvimwewo, kushandiswa kwe multimode fiber kunogona kuderedza mari ye network.
I-single-mode fiber ine nheyo duku (kazhinji inenge 9 m) uye inogona kungoendesa imwe nzira yechiedza.Saka, kupararira pakati pemamodhi idiki kwazvo, yakakodzera kutaurirana kure, asi kuchine kupararira kwezvinhu uye waveguide dispersion, saka. Single-mode fiber ine zvidikanwi zvakakwirira zvehupamhi hwe spectral uye kugadzikana kwechiedza chechiedza, ndiko kuti, upamhi hunofanira kuva hudiki, uye kugadzikana kunofanira kuva kwakanaka.Single-mode fiber inonyanya kushandiswa mumitsetse ine kureba kwekufambisa kure uye zvishoma. high transmission rate, senge kureba-kure trunk transmission, metropolitan area network building, etc. Ikozvino FTTx neHFC network inonyanya kunyanya single-mode fibers.
Musiyano pakati pe single mode fiber transceivers uye multimode fiber transceivers
A fiber optic transceiver is an Ethernet transmission medium conversion device inotsinhanisa magetsi neoptical signals eEthernet, uye optical fibers inotumira data pamusoro pe network inoiswa mu multimode fibers uye single mode fibers.Kubva kune networking application, nokuti multimode fiber haigoni kuva. inotapurirwa nzendo refu, inogona chete kushandiswa kune network mukati mezvivakwa uye pakati pezvivakwa.Zvakadaro, nekuti multimode faibha uye inoenderana nefiber transceiver zvakachipa, ichiri mukati meimwe siyana.Zvikoro zvakawanda zvinoshandisa multimode fiber kana vachivaka yemukati campus network.
Nekufambira mberi kwetekinoroji, single-mode fiber yakatanga kupinda kure-kure networking mashandiro (kubva pamakiromita mashoma kusvika anopfuura zana makiromita), uye kusimudzira kwekusimudzira kuri kukurumidza, mumakore mashoma, kubva kumagumo-ekupedzisira maapplication kuenda. misha yevanhuwo zvavo, Somuenzaniso, dzimba dzakawanda ikozvino dzinoshandisa optical transceivers (inonzi FTTH mode, fiber-to-the-home) pavanovhura network.Kushandiswa kwema-optical transceivers kwava nzira yakajairika yekukosha-yakawedzerwa masevhisi ekutepfenyura uye terevhizheni.
Uchishandisa fiber optic transceivers ye networking, zvakanakira hazvina kungogadzikana, asi chii chimwe?Ndiyo speed!100M yakazara duplex, kunyange yakakwirira kumhanya kupfuura zana yakazara duplex: 1000M yakazara duplex.
Iyo inowedzera iyo network yekufambisa chinhambwe chinhambwe kubva pa100M kusvika kupfuura 100KM yeakamonyoroka maviri, ayo anogona kuona zviri nyore kubatana pakati peiyo mamaboard server, inodzokorora, hub, terminal uye terminal.Pakusarudza fiber-optic network, isu tinosimbisa kunzwisiswa kwefiber optical, kusimudzira ruzivo rwakakodzera, uye sarudza iyo inonyatsoita faibha kuburikidza nekufunga kwakadzama.