Ndeupi Musiyano: OM3 vs OM4?
Muchokwadi, mutsauko uripo pakati peOM3 vs OM4 fiber ungori mukuvakwa kweiyo fiber optic tambo.Musiyano mukuvaka unoreva kuti OM4 tambo ine attenuation iri nani uye inogona kushanda pakakwirira bandwidth kupfuura OM3.Chii chiri chikonzero cheizvi?Kuti fiber link ishande, mwenje unobva kuVCSEL transceiver wakawanda une simba rakakwana rekusvika kune anogamuchira kune rimwe divi.Pane maitiro maviri ekuita anogona kudzivirira izvi-optical attenuation uye modal dispersion.
Attenuation ndiko kudzikiswa kwesimba rechiratidzo chechiedza sezvachiri kufambiswa (dB).Attenuation inokonzerwa nekurasikirwa kwechiedza kuburikidza nezvinongoitika zvikamu, senge tambo, tambo splices, uye zvinobatanidza.Sezvataurwa pamusoro apa ma-connectors akafanana saka mutsauko wekuita muOM3 vs OM4 uri mukurasikirwa (dB) mutambo.OM4 fiber inokonzera kurasikirwa kwakaderera nekuda kwekuvakwa kwayo.Iyo yakanyanya attenuation inobvumidzwa nezviyero inoratidzwa pazasi.Iwe unogona kuona kuti kushandisa OM4 kunokupa kurasikirwa kwakaderera pamamita etambo.Iko kurasikirwa kwakaderera kunoreva kuti iwe unogona kuve neakareba zvinongedzo kana kuve neakawanda mated connectors mune chinongedzo.
Maximum attenuation inobvumirwa pa850nm: OM3 <3.5 dB/Km;OM4 <3.0 dB/Km
Chiedza chinofambiswa nenzira dzakasiyana pamwe nefiber.Nekuda kwekusakwana kuri mufiber, modhi idzi dzinosvika senguva dzakati siyanei.Sezvo mutsauko uyu uchiwedzera unopedzisira wasvika padanho rekuti ruzivo rwuri kufambiswa rusingagone kudhindwa.Uyu mutsauko pakati pepamusoro uye wakaderera modhi unozivikanwa se modal dispersion.Iyo modal dispersion inosarudza modal bandwidth iyo fiber inogona kushanda pairi uye uyu ndiwo mutsauko pakati peOM3 neOM4.Iyo yakaderera iyo modal dispersion, iyo yakakwirira iyo modal bandwidth uye yakakura huwandu hweruzivo hunogona kufambiswa.Iyo modal bandwidth yeOM3 uye OM4 inoratidzwa pazasi.Iyo yepamusoro bandwidth inowanikwa muOM4 inoreva diki modal dispersion uye nekudaro inobvumira matambo ekubatanidza kuti ave akareba kana kubvumira kurasikirwa kwakanyanya kuburikidza neakawanda mated connectors.Izvi zvinopa dzimwe sarudzo kana uchitarisa kune network dhizaini.
Minimum Fiber Cable Bandwidth pa850nm: OM3 2000 MHz·km;OM4 4700 MHz·km
Sarudza OM3 kana OM4?
Sezvo attenuation yeOM4 yakaderera pane OM3 fiber uye modal bandwidth yeOM4 yakakwirira kupfuura OM3, kureba kwekufambisa kweOM4 kwakareba kupfuura OM3.
| Fiber Type | 100BASE-FX | 1000BASE-SX | 10GBASE-SR | 40GBASE-SR4 | 100GBASE-SR4 |
| OM3 | 2000 Mamita | 550 Mamita | 300 Mamita | 100 Mamita | 100 Mamita |
| OM4 | 2000 Mamita | 550 Mamita | 400 Mamita | 150 Mamita | 150 Mamita |
Nguva yekutumira: Sep-03-2021