Mazuva ano, mune yazvino network yekukurukurirana mapurojekiti, optical transceivers,optical fiber transceivers, uye optical modems inogona kunzi inoshandiswa zvakanyanya uye inoremekedzwa zvikuru nevashandi vekuchengetedza. Saka, unoziva here musiyano uripo pakati pezvitatu izvi Zvakajeka?
Optical modem imhando yemidziyo yakafanana nebaseband MODEM (digital modem). Musiyano kubva kubaseband MODEM ndeyekuti yakabatana kune yakatsaurirwa optical fiber mutsara, inova chiratidzo chemaziso.
Inoshandiswa kushandurudza photoelectric chiratidzo uye interface protocol munzvimbo yakakura network, uye kuwanarouterndiyo yakafara nzvimbo network kuwana. Iyo photoelectric transceiver inoshandisa kutendeuka kwechiratidzo chemagetsi munharaunda yemunharaunda, asi chete chiratidzo chekushandura, pasina kushandurwa kweprotocol interface.Iyo inowanzoshandiswa kure kure mumusasa wekambasi uye haina kukodzera kunharaunda uko. tambo dzakamonyoroka dzinoiswa. Kuti ujekese iyo optical modem, photoelectric transceiver. Tinofanira kusuma mhoteredzo yavanoshandiswa mairi.
Optical Modem, inozivikanwawo se-single-port optical transceiver, chigadzirwa chakagadzirirwa nzvimbo dzakakosha dzevashandisi. Inoshandisa peya ye optical fibers kune imwe chete E1 kana imwe chete V. 35 kana imwe chete 10BaseT point-to-point optical transmission terminal equipment. Semidziyo yekutumira yetiweki yenzvimbo, ichi chishandiso chakakodzera kune optical fiber terminal yekutapurirana midziyo ye base station uye yakarenda tambo michina. Kune akawanda-port optical transceivers, anowanzo kunzi "optical transceivers". Kune single-port optical transceivers, ivo vanowanzo shandiswa parutivi rwemushandisi. Ivo vanoshanda zvakafanana neanowanzo shandiswa baseband MODEM yeWAN yakatsaurwa mutsara (circuit) networking. "Optical modem" uye "Optical Network Unit".
Optical transceivers zvinongova zvigadzirwa zvekukurukurirana kwedata. Iwo chaiwo optical transceiver zvigadzirwa zvakasiyana-siyana, zvinobatsira patambo yeterevhizheni kutapurirana, zvimwe zvekufambisa kwenhare, zvinobatsira pakudzora kwemaindasitiri, uye zvimwe zvinotobatanidza "izwi, data, mufananidzo" uye mamwe masevhisi kuti awane Imwe.
Iyo optical fiber transceiver inoona shanduko yechiratidzo pakati pe-single-mode uye akawanda-modhi fiber uye yakamonyoroka peya muEthernet. The optical fiber transceiver is an Ethernet transmission media conversion unit iyo inotsinhanisa kure-kure-kure-monyoroka maviri masaini emagetsi masaini uye kure-kure-kure optical zviratidzo. Optical transceivers anowanzo shandiswa munzvimbo chaidzo dzetiweki uko tambo dzeEthernet dzisingagoni kuvharwa uye optical fibers dzinofanira kushandiswa kuwedzera kureba kwekufambisa; panguva imwe chete, ivo vari kubatsira kubatanidza maira yekupedzisira yeoptical fiber mitsara kune metropolitan area network (yeEthernet tekinoroji) uye mamwe machira ekunze. Indaneti yakaitawo basa guru.
Zvinoenderana nekumhanya, iyo optical fiber transceiver inogona kukamurwa kuita imwechete 10M, 100M optical fiber transceiver,10/100M inogadzirisa optical fiber transceiveruye 1000M optical fiber transceiver. 10M uye 100M ma-transceivers anoshanda pachikamu chemuviri, uye zvigadzirwa zvetransceiver zvinoshanda pane iyi dhata mberi data zvishoma nezvishoma. Iyi nzira yekutumira ine mabhenefiti ekukurumidza kumhanyisa kukurumidza, kujeka kwepamusoro, kunonoka kuderera, nezvimwewo, iri nani mukuenderana uye kugadzikana, uye inokodzera kushandiswa pane yakatarwa-chiyero malink.
Iyo 10/100M optical fiber transceiver inoshanda pane data link layer. Pane iyi dhizaini, iyo optical fiber transceiver inoshandisa chitoro-uye-mberi nzira kuverenga kwainotangira MAC kero, kwainoenda MAC kero, uye kwainoenda MAC kero yepakiti yega yega inotambirwa. Dhata, iyo data packet inotumirwa mushure mekunge CRC cyclic redundancy cheki yapera. Chekutanga, inogona kudzivirira mamwe mafuremu asiri iwo kubva mukupararira munetiweki uye kutora akakosha network zviwanikwa. Panguva imwecheteyo, inogona zvakare kudzivirira data packet kurasikirwa nekuda kwekusangana kwetiweki.
Zvinoenderana nechimiro, inogona kukamurwa kuita desktop mhando optical fiber transceiver uye rack mhando optical fiber transceiver. Iyo desktop optical fiber transceiver inokodzera mushandisi mumwechete, sekusangana nekukwira kweimwe chetechinjamukoridho. Rack-yakaiswa fiber optic transceivers yakakodzera kune akawanda-mushandisi kuunganidzwa.
Zvinoenderana nefiber, inogona kukamurwa kuita multi-mode fiber transceiver uye single-mode fiber transceiver. Nekuda kweakasiyana optical fibers anoshandiswa, kureba kwekufambisa kweiyo transceiver kwakasiyana. Iyo yakajairika yekufambisa kureba yeakawanda-modhi transceiver iri pakati pemakiromita maviri ne5 makiromita, nepo imwe-modhi transceiver inogona kuvhara kubva pamakiromita makumi maviri kusvika 120 makiromita. Izvo zvinofanirwa kutaurwa kuti nekuda kwekusiyana kwechinhambwe chekufambisa, simba rekutumira, kugamuchira senitivity uye wavelength yefiber optic transceiver pachayo ichave yakasiyana. Simba rekutumira re 5km optical fiber transceiver rinowanzova pakati -20 kusvika -14db, uye kugamuchira senitivity ndeye -30db, uchishandisa wavelength ye1310nm; nepo simba rekutumira re 120 km optical fiber transceiver rinonyanya kuva pakati -5 kusvika 0dB, uye kugamuchira kunzwa kuri -38dB, uchishandisa 1550nm wavelength.
Zvinoenderana nehuwandu hwefiber optical, inogona kukamurwa kuita imwe-fiber optical transceiver uyedual-fiber optical transceiver. Single fiber ndeyekuziva iyo data inogamuchira uye kutumira pane optical fiber. Rudzi urwu rwechigadzirwa runotora tekinoroji yewavelength division multiplexing, uye wavelengths inoshandiswa kazhinji 1310nm uye 1550nm. Nekuda kwekushandiswa kwewavelength division multiplexing, single fiber transceiver zvigadzirwa zvinowanzove nehunhu hwekuremerwa kwechiratidzo. Parizvino, mazhinji efiber optic transceivers pamusika ane mbiri-fiber zvigadzirwa, izvo zvakakura uye zvakagadzikana.
Zvakanaka, iyo iri pamusoro apa ndiyo sumo pamusoro pekusiyana pakati pe optical transceiver, optical fiber transceiver uye optical modem. Ndinovimba inogona kukubatsira iwe!