Cholumikizira cha fiber fiber
Cholumikizira cha fiber optic chimakhala ndi ulusi ndi pulagi kumapeto onse a ulusi. Pulagi imakhala ndi pini ndi zotchinga zotsekera.Malinga ndi njira zosiyana zotsekera, zolumikizira za fiber zimatha kugawidwa mu mtundu wa FC, mtundu wa SC, mtundu wa LC, mtundu wa ST ndi mtundu wa KTRJ.
Cholumikizira cha FC chimatengera makina otsekera ulusi ndipo ndi cholumikizira cholumikizira ulusi chomwe ndi choyambirira komanso chogwiritsidwa ntchito kwambiri.
SC ndi mgwirizano wamakona anayi opangidwa ndi NTT. Ikhoza kulowetsedwa mwachindunji ndikuchotsedwa popanda kugwirizana kwa ulusi. Poyerekeza ndi cholumikizira cha FC, ili ndi malo ochepa opangira ndipo ndi yosavuta kugwiritsa ntchito. Zogulitsa za Ethernet zotsika ndizofala kwambiri.
Chojambulira cha ST chinapangidwa ndi AT & T ndipo chimagwiritsa ntchito njira yotseka bayonet.Zizindikiro zazikulu za parameter ndizofanana ndi zolumikizira za FC ndi SC, koma sizodziwika muzofunsira zamakampani. Nthawi zambiri amagwiritsidwa ntchito pazida zamitundu yambiri ndipo amagwiritsidwa ntchito nthawi zambiri akamalumikizidwa ndi zida za opanga ena.
Zikhomo za KTRJ zimapangidwa ndi pulasitiki ndipo zimayikidwa ndi zikhomo zachitsulo. Pamene chiwerengero cha kuika ndi kuchotsa chikuwonjezeka, malo okwerera amavala ndi kuvala, ndipo kukhazikika kwa nthawi yaitali sikuli bwino ngati zolumikizira pini za ceramic.
Kudziwa za optical fiber
An optical CHIKWANGWANI ndi kondakitala kuti transmits kuwala mafunde.Optical CHIKWANGWANI akhoza kugawidwa mu single mode CHIKWANGWANI ndi multimode CHIKWANGWANI kuchokera mumalowedwe kufala kuwala.
Mu fiber yamtundu umodzi, kufalikira kwa kuwala kumakhala ndi njira imodzi yokha yofunikira, zomwe zikutanthauza kuti kuwala kumangodutsa mkati mwa mkati mwa fiber. pakulankhulana kothamanga kwambiri, mtunda wautali.
Mu ma multimode fiber, pali njira zingapo zopatsira kuwala. Chifukwa cha kubalalitsidwa kapena kusokonekera, kufalikira kwa ulusi woterewu kumakhala kovutirapo, gulu lafupipafupi ndi lopapatiza, kuchuluka kwa kufalikira kumakhala kochepa, ndipo mtunda ndi waufupi.
Optic fiber khalidwe magawo
Mapangidwe a ulusi wa kuwala amapangidwa ndi ndodo ya quartz, ndipo kutalika kwa kunja kwa multimode fiber ndi single mode fiber yolumikizirana ndi 125.μm.
The slimming imagawidwa m'madera awiri: Core ndi Cladding layer. The single-mode fiber core imakhala ndi mainchesi apakati a 8 ~ 10μm. Multimode CHIKWANGWANI m'mimba mwake ali awiri mfundo muyezo, ndi awiri pachimake ndi 62.5μm (US muyezo) ndi 50μm (European standard).
Mawonekedwe a fiber mawonekedwe ali ndi malongosoledwe awa: 62.5μm / 125μmamita multimode CHIKWANGWANI, amene 62.5μm amatanthauza awiri pachimake cha CHIKWANGWANI, ndi 125μm amatanthauza awiri akunja kwa ulusi.
Ulusi wamtundu umodzi umagwiritsa ntchito kutalika kwa 1310nm kapena 1550nm.
Ulusi wa Multimode umagwiritsa ntchito kutalika kwa 850 nm.
Single mode CHIKWANGWANI ndi multimode CHIKWANGWANI akhoza kusiyanitsidwa mtundu. Thupi lakunja kwa ulusi wamtundu umodzi ndi lachikasu, ndipo thupi lakunja la multimode ndi lofiira ngati lalanje.
Gigabit Optical port
Ma doko a Gigabit optical amatha kugwira ntchito m'njira zokakamiza komanso zokambitsirana.Muzofotokozera za 802.3, Gigabit optical port imathandizira liwiro la 1000M yokha ndipo imathandizira mitundu yonse ya duplex (Full) ndi theka-duplex (Half) duplex.
Kusiyanitsa kwakukulu pakati pa zokambirana zokha ndi kukakamiza ndikuti code mtsinje wotumizidwa pamene awiriwa akhazikitsa ulalo wakuthupi ndi wosiyana. Njira yolumikizirana yokha imatumiza kachidindo / C/, komwe ndi njira yosinthira, ndipo njira yokakamiza imatumiza / I / code, yomwe ndi mtsinje wopanda pake.
Gigabit Optical port self - kukambirana ndondomeko
Choyamba: malekezero onse awiri akhazikitsidwa kuti azikambirana okha
Maphwando awiriwa amatumizirana wina ndi mnzake / C/code mtsinje. Ngati atatu ofanana / C/ ma code alandilidwa motsatizana ndipo ma code olandila akufanana ndi momwe amagwirira ntchito kumapeto kwanuko, gulu lina libweza / C/ kachidindo ndi yankho la Ack. Atalandira zambiri za Ack, mnzakeyo amawona kuti awiriwo amatha kulumikizana wina ndi mnzake ndikuyika doko ku boma la UP.
Chachiwiri: Mapeto amodzi akhazikitsidwa kuti azikambirana okha, mapeto amodzi amaikidwa mokakamizidwa
Kumapeto kwa zokambirana zokha kumatumiza /C/mtsinje, ndipo mapeto okakamiza amatumiza /I/stream. Mapeto okakamiza sangathe kupereka mnzanuyo chidziwitso cha zokambirana za mapeto a m'deralo, ndipo sangathe kubwezera yankho la Ack kwa anzawo. Choncho, malo ogwiritsira ntchito auto-negotiation PAKUTI.
Chachitatu: malekezero onse akhazikitsidwa ku mokakamiza mode
Maphwando awiriwa amatumizana/ine/mitsinje. Atalandira /I/mtsinje, mnzakeyo amawona kuti mnzakeyo ndiye doko lomwe limafanana ndi mnzake.
Kodi pali kusiyana kotani pakati pa multimode ndi singlemode fiber?
Multimode:
Zingwe zomwe zimatha kuyenda kuchokera ku mazana kupita ku masauzande ambiri zimatchedwa ma multimode (MM) fibers. Malinga ndi kugawa kwa radial kwa refractive index pachimake ndi cladding, imatha kugawidwanso kukhala masitepe a multimode fiber ndi pang'onopang'ono ma multimode fiber. ulusi wa multimode ndi 50/125 μm kapena 62.5/125 μm kukula, ndipo bandwidth (kuchuluka kwa chidziwitso chofalitsidwa ndi fiber) nthawi zambiri ndi 200 MHz mpaka 2 GHz. . Diode yotulutsa kuwala kapena laser imagwiritsidwa ntchito ngati gwero lowunikira.
Njira imodzi:
Chingwe chomwe chimatha kufalitsa njira imodzi yokha chimatchedwa single mode fiber.The standard single mode (SM) fiber refractive index profile ndi yofanana ndi fiber step, kupatula kuti mainchesi apakati ndi ochepa kwambiri kuposa multimode fiber.
Kukula kwa single mode fiber ndi 9-10 / 125μm ndipo ali ndi bandwidth yopanda malire komanso makhalidwe otsika otayika kusiyana ndi ma multimode fiber.Ma transceivers optical single-mode amagwiritsidwa ntchito nthawi zambiri kufalitsa mtunda wautali, nthawi zina kufika ku 150 mpaka 200 makilomita. Ma LED okhala ndi mizere yocheperako ya LD kapena spectral amagwiritsidwa ntchito ngati gwero la kuwala.
Kusiyana ndi kulumikizana:
Zipangizo zamtundu umodzi nthawi zambiri zimagwiritsa ntchito ulusi wamtundu umodzi ndi ulusi wa multimode, pomwe zida za multimode zimangogwira ntchito pamitundu yambiri.