Masiku ano, m'mapulojekiti amakono oyankhulana pa intaneti, ma transceivers optical,optical fiber transceivers, ndipo ma modemu owoneka amatha kunenedwa kuti amagwiritsidwa ntchito kwambiri komanso amalemekezedwa kwambiri ndi ogwira ntchito zachitetezo. Ndiye, kodi mukudziwa kusiyana pakati pa atatuwa Omveka?
Optical modemu ndi mtundu wa zida zofanana ndi baseband MODEM (modemu ya digito). Kusiyana kwa baseband MODEM ndikuti imalumikizidwa ndi mzere wodzipatulira wa fiber fiber, womwe ndi chizindikiro cha kuwala.
Amagwiritsidwa ntchito potembenuza chizindikiro cha photoelectric ndi mawonekedwe a protocol mu network yayikulu, ndi mwayirautandiye mwayi waukulu wa netiweki. Transceiver ya photoelectric imagwiritsa ntchito kutembenuka kwa chizindikiro cha photoelectric mu intaneti ya m'deralo, koma kutembenuka kwa chizindikiro kokha, popanda kutembenuka kwa mawonekedwe ovomerezeka. zingwe zopotoka zimayikidwa. Pofuna kufotokozera modemu ya kuwala, transceiver ya photoelectric. Tiyenera kufotokozera malo omwe amagwiritsidwa ntchito.
Optical Modem, yomwe imadziwikanso kuti single-port optical transceiver, ndi mankhwala opangidwa kuti azigwiritsidwa ntchito mwapadera. Amagwiritsa ntchito ulusi wamagetsi kwa E1 imodzi kapena V. 35 imodzi kapena imodzi 10BaseT point-to-point optical transmission terminal equipment. Monga zida zotumizira ma netiweki amderali, zida izi ndizoyenera zida zotumizira ma fiber optical za station station ndi zida zobwereketsa. Kwa ma transceivers opangidwa ndi ma port ambiri, nthawi zambiri amatchedwa "optical transceivers". Kwa ma transceivers opanga ma single-port Optical, nthawi zambiri amagwiritsidwa ntchito kumbali ya ogwiritsa ntchito. Amagwira ntchito mofanana ndi MODEM ya baseband yomwe imagwiritsidwa ntchito kwambiri pa intaneti ya WAN (circuit). "Optical modem" ndi "Optical Network Unit".
Ma transceivers owoneka ndi zinthu zokhazokha zolumikizirana ndi data. Zogulitsa zenizeni za transceiver zowoneka bwino ndizosiyanasiyana, zothandiza pakutumiza kwa kanema wawayilesi, zina pakutumizirana matelefoni, zothandiza pakuwongolera mafakitale, ndipo zina zimaphatikizanso "mawu, deta, chithunzi" ndi mautumiki ena kuti apeze Mmodzi.
Optical fiber transceiver amazindikira kutembenuka kwa siginecha pakati pa single-mode ndi multi-mode fiber ndi awiri opotoka mu Ethernet. Optical fiber transceiver ndi Ethernet transmission media conversion unit yomwe imasinthanitsa ma siginecha amagetsi opotoka mtunda waufupi ndi ma sign atali atali. Ma transceivers owoneka nthawi zambiri amagwiritsidwa ntchito m'malo enieni amtaneti pomwe zingwe za Efaneti sizingaphimbidwe ndipo ulusi wamaso uyenera kugwiritsidwa ntchito kukulitsa mtunda wotumizira; nthawi yomweyo, akuthandiza kulumikiza mtunda wotsiriza wa mizere ya optical fiber ku ma network a metropolitan area (a teknoloji ya Efaneti) ndi zigawo zina zakunja. Intaneti yathandizanso kwambiri.
Malinga ndi liwiro, transceiver ya kuwala kwa fiber imatha kugawidwa kukhala 10M imodzi, 100M optical fiber transceiver,10/100M chosinthira kuwala CHIKWANGWANI transceiverndi 1000M optical fiber transceiver. Ma transceivers a 10M ndi 100M amagwira ntchito pagawo lakuthupi, ndipo zinthu za transceiver zimagwira ntchito iyi patsogolo pang'onopang'ono deta. Njira yotumizirayi ili ndi ubwino wothamanga mofulumira, kuwonetsetsa kwakukulu, kuchedwa kochepa, ndi zina zotero, ndi bwino kugwirizanitsa ndi kukhazikika, ndipo ndi yoyenera kugwiritsidwa ntchito pazitsulo zokhazikika.
10/100M optical fiber transceiver imagwira ntchito pa data link layer. Pansanjika iyi, transceiver ya fiber optical imagwiritsa ntchito makina osungira ndi kutsogolo kuti awerenge gwero la adilesi ya MAC, adilesi ya MAC yopita, ndi adilesi yopita ya MAC pa paketi iliyonse yolandilidwa. Deta, paketi ya data imatumizidwa pambuyo cheke ya CRC cyclic redundancy ikamalizidwa. Choyamba, imatha kuletsa mafelemu ena olakwika kuti asafalikire pa netiweki ndikukhala ndi zida zapaintaneti zamtengo wapatali. Nthawi yomweyo, imathanso kupewa kutayika kwa paketi ya data chifukwa cha kuchuluka kwa maukonde.
Malinga ndi kapangidwe kake, itha kugawidwa mumtundu wa desktop wamtundu wa fiber fiber transceiver ndi rack type Optical fiber transceiver. Desktop optical fiber transceiver ndi yoyenera kwa wogwiritsa ntchito m'modzi, monga kukumana ndi uplink wa m'modzikusinthamu korido. Ma transceivers okhala ndi ma fiber optic okhala ndi rack ndi oyenera kuphatikiza ogwiritsa ntchito ambiri.
Malinga ndi fiber, imatha kugawidwa kukhala multi-mode fiber transceiver ndi single-mode fiber transceiver. Chifukwa cha ulusi wosiyanasiyana wa kuwala womwe umagwiritsidwa ntchito, mtunda wotumizira wa transceiver ndi wosiyana. Mtunda wapawiri wa transceiver wamitundu yambiri uli pakati pa 2 kilomita ndi 5 makilomita, pomwe transceiver yokhala ndi single-mode imatha kuphimba ma kilomita 20 mpaka 120. Ziyenera kunenedwa kuti chifukwa cha kusiyana kwa mtunda wotumizira, mphamvu yotumizira, kulandira chidwi ndi kutalika kwa fiber optic transceiver yokha idzakhalanso yosiyana. Mphamvu yotumizira ya 5km optical fiber transceiver nthawi zambiri imakhala pakati pa -20 mpaka -14db, ndipo kulandira kumva ndi -30db, pogwiritsa ntchito kutalika kwa 1310nm; pamene mphamvu yotumizira ya 120 km optical fiber transceiver nthawi zambiri imakhala pakati pa -5 mpaka 0dB, ndipo mphamvu yolandira ndi -38dB, pogwiritsa ntchito 1550nm wavelength.
Malinga ndi kuchuluka kwa ulusi wa kuwala, imatha kugawidwa kukhala transceiver ya fiber single-fibertransceiver yapawiri-fiber Optical. Single fiber ndikuzindikira zomwe zimalandira ndikutumiza pa fiber optical. Zogulitsa zamtunduwu zimagwiritsa ntchito ukadaulo wa kugawa kwa mafunde, ndipo mafunde omwe amagwiritsidwa ntchito nthawi zambiri amakhala 1310nm ndi 1550nm. Chifukwa chogwiritsa ntchito ma wavelength division multiplexing, zinthu zamtundu umodzi wa fiber transceiver nthawi zambiri zimakhala ndi mawonekedwe azizindikiro zazikulu. Pakalipano, ma transceivers ambiri a fiber optic pamsika ndi zinthu zapawiri-fiber, zomwe zimakhala zokhwima komanso zokhazikika.
Chabwino, zomwe zili pamwambazi ndizoyambira za kusiyana pakati pa transceiver optical, optical fiber transceiver ndi modem ya kuwala. Ndikukhulupirira kuti zitha kukhala zothandiza kwa inu!