Kune mhando shanu dze multimode fiber: OM1, OM2, OM3, OM4, uye ikozvino OM5. Chii chinoita kuti dzisiyane?
Pakati pezvinhu (ndiregerereiwo nekutamba), chinoparadzanisa magiredhi aya efiber ihukuru hwawo hwepakati, zvinotumira, uye kugona kwebandwidth.
Mafiber eOptical multimode (OM) ane core ye50 µm (OM2-OM5) kana 62.5 µm (OM1). Core yakakura inoreva kuti nzira dzakawanda dzechiedza dzinofamba pasi pe core panguva imwe chete, saka zita rekuti "multimode."
MaFiber Ekare
Zvakakosha, saizi yepakati yeOM1 ye62.5 µm zvinoreva kuti haishande nemamwe marudzi emultimode uye haigone kugamuchira maconnector akafanana. Sezvo OM1 neOM2 zvese zvichigona kuva nemajaketi ekunze eorenji (zvichienderana neTIA/EIA standards), gara uchitarisa print legend iri patambo kuti uve nechokwadi chekuti uri kushandisa maconnector akakodzera.
Matayi epakutanga eOM1 neOM2 akagadzirwa kuti ashandiswe nemasosi eLED kana ma transmitter. Kuganhurirwa kwemodulation yema LED kwakaderedzawo kugona kweOM1 neOM2 yekutanga.
Zvisinei, kuwedzera kwekudiwa kwekumhanya kwakareva kuti mafiber e optical aida kugona kwepamusoro-soro kwebandwidth. Pinda mufibers dze multimode dzakagadziriswa ne laser (LOMMF): OM2, OM3 uye OM4, uye ikozvino OM5.
Kugadzirisa Neraser
Mafiber eOM2, OM3, OM4, uye OM5 akagadzirwa kuti ashande nema lasers epamusoro-soro anoburitsa mwenje (VCSELs), anowanzova pa850 nm. Nhasi, OM2 yakagadziriswa ne laser (yakafanana neyedu) inowanikwawo zviri nyore. MaVCSEL anobvumira modulation rates inokurumidza kupfuura ma LED, zvichireva kuti fibers dzakagadziriswa ne laser dzinogona kutumira data rakawanda.
Zvichienderana nezvinodiwa neindasitiri, OM3 ine bandwidth inoshanda (EMB) ye2000 MHz*km pa850 nm. OM4 inogona kubata 4700 MHz*km.
Panyaya yekuziva, OM2 inochengetedza bhachi yeorenji, sezvataurwa pamusoro apa. OM3 neOM4 zvinogona kuva nebhachi rekunze re aqua (izvi ndezvechokwadi nezveCleerline OM3 neOM4 patch cables). OM4 inogonawo kuoneka nebhachi rekunze re "Erika violet". Kana ukasangana nebhachi re fiber optic rakajeka, ringangodaro riri OM4. Zvinofadza kuti OM2, OM3, OM4, uye OM5 zvese mafiber e50/125 µm uye zvese zvinogona kugamuchira ma connectors akafanana. Zvisinei, cherechedza kuti macode emavara e connector anosiyana. Mamwe ma multimode connectors anogona kunge akaiswa se "akagadziridzwa kune OM3/OM4 fiber" uye achave neruvara rwe aqua. Standard laser-optimized multimode connectors anogona kunge ari beige kana dema. Kana paine kuvhiringidzika, ndapota tarisa connector specification chaiyo maererano nehukuru hwe core. Kufananidza saizi ye core ndiyo hunhu hwakakosha kune mechanical connectors, sezvo zvichiita kuti chiratidzo chirambe chichienderera mberi kuburikidza ne connector.
Nguva yekutumira: Nyamavhuvhu-01-2022