Kune 5 mamakisi e multimode fiber: OM1, OM2, OM3, OM4, uye ikozvino OM5. Chii chaizvo chinoita kuti vasiyane?
Pakati pepakati (regererai pun), chii chinoparadzanisa aya magiredhi efiber hukuru hwavo hwepakati, ma transmitters, uye bandwidth kugona.
Optical multimode (OM) fibers ane musimboti we50 µm (OM2-OM5) kana 62.5 µm (OM1). Iyo yakakura yepakati inoreva kuti nzira dzakawanda dzechiedza dzinofamba dzichidzika pakati pepakati panguva imwe chete, nekudaro zita rekuti "multimode."
Legacy Fibers
Zvakakosha, OM1's 62.5 µm core size zvinoreva kuti haienderane nemamwe magiredhi emultimode uye haigone kugamuchira majoini mamwe chete. Sezvo OM1 neOM2 zvese zvichigona kuva nemabhachi eorenji ekunze (pamwe neTIA/EIA zviyero), gara uchitarisa ngano yakadhinda patambo kuti uone kuti uri kushandisa zvinobatanidza.
Ekutanga OM1 uye OM2 fibers ese akagadzirirwa kushandiswa ne LED masosi kana transmitters. Iyo modulation miganho ye LED zvakare yakaganhura kugona kweOM1 uye yekutanga OM2.
Nekudaro, kudiwa kuri kuwedzera kwekumhanya kwaireva kuti optical fibers inoda yakakwirira bandwidth kugona. Pinda iyo laser-optimized multimode fibers (LOMMF): OM2, OM3 uye OM4, uye ikozvino OM5.
Laser-Optimization
OM2, OM3, OM4, uye OM5 fibers dzakagadzirirwa kushanda ne vertical-cavity surface-emitting lasers (VCSELs), kazhinji pa850 nm. Nhasi, laser-optimized OM2 (seyedu) inowanikwawo nyore. VCSELs inobvumira kukurumidza kukurumidza modulation mitengo kupfuura maLED, zvichireva kuti laser-optimized fibers inogona kufambisa yakawanda data.
Maererano neindasitiri zviyero, OM3 ine inoshanda modal bandwidth (EMB) ye2000 MHz* km pa850 nm. OM4 inogona kubata 4700 MHz * km.
Panyaya yekuzivikanwa, OM2 inochengetedza bhachi reorange, sezvataurwa pamusoro. OM3 neOM4 zvese zvinogona kuve neaqua bhachi rekunze (izvi ndezvechokwadi nezveCleerline OM3 uye OM4 chigamba tambo). OM4 inogona neimwe nzira kuoneka ne “Erika violet” bhachi rekunze. Kana iwe ukamhanyira mune inopenya magenta fiber optic tambo, ingangove OM4. Zvinofadza, OM2, OM3, OM4, uye OM5 ese ari 50/125 µm mafiibha uye ese anogona kugamuchira majoini mamwechete. Ziva, zvisinei, kuti macode emavara ekubatanidza anosiyana. Mamwe ma-multimode connectors anogona kunyorwa se "optimized for OM3/OM4 fiber" uye achave neruvara rwemvura. Standard laser-optimized multimode connectors inogona kuva beige kana dema. Kana paine kuvhiringika, ndapota tarisa iyo yekubatanidza yakanangana nehukuru hwepakati. Kufananidza saizi yepakati ndiyo inonyanya kukosha hunhu hwema mechanical connectors, sezvo ichiva nechokwadi chekuti chiratidzo chinochengetedza kuenderera kuburikidza nekubatanidza.
Nguva yekutumira: Aug-01-2022