Fiber ea optical ke fiber e tenyetsehang, e bonaletsang e entsoeng ka khalase kapa polasetiki e tenya hanyenyane ho feta moriri oa motho.Lithapo tsa mahlo li sebelisoa hangata e le mokhoa oa ho fetisa leseli lipakeng tsa lipheletso tse peli tsa faeba le ho fumana ts'ebeliso e pharaletseng likhokahanong tsa fiber-optic, moo li lumellang phetiso libakeng tse telele le ho li-bandwidth tse phahameng ho feta likhoele tsa terata.Hangata likhoele tsa optical li kenyelletsa mokokotlo o bonaletsang o pota-potiloeng ke lesela le bonaletsang le nang le index e tlase ea refraction.Leseli le bolokoa mokokotlong ke ts'ebetso ea ho bonahatsa ka hare ho feletseng e etsang hore fiber e sebetse e le waveguide.Ka kakaretso, ho na le mefuta e 'meli ea fiber optical: likhoele tse tšehetsang litsela tse ngata tsa ho ata kapa mekhoa e fapaneng e bitsoa multimode fibers (MMF), athe tse tšehetsang mokhoa o le mong li bitsoa single mode fibers (SMF).Mokhoa o le mong vs fiber ea multimode: phapang ke efe lipakeng tsa tsona?Ho bala temana ena ho tla o thusa ho fumana karabo.
Mokhoa o le Mong vs Multimode Fiber: Fibre ea optical mode e le 'ngoe ke efe?
Puisanong ea fiber-optic, fiber optical mode e le 'ngoe (SM) ke fiber ea optical e etselitsoeng ho tsamaisa leseli ka ho toba ho theosa le fiber - mokhoa oa transverse.Bakeng sa fiber ea optical mode e le 'ngoe, ho sa tsotelehe hore e sebetsa ho 100 Mbit/s kapa 1 Gbit/s date rate , sebaka sa phetisetso se ka fihla bonyane 5 km.Ka tloaelo, e sebelisoa bakeng sa phetiso ea mats'oao a hole.
Single Mode vs Multimode Fiber: Multimode optical fiber ke eng?
Multimode optical fiber(MM) ke mofuta oa fiber ea optical e sebelisoang haholo bakeng sa puisano libakeng tse khutšoane, joalo ka ka har'a moaho kapa khamphaseng.Lebelo le tloaelehileng la phetisetso le meeli ea sebaka ke 100 Mbit/s bakeng sa sebaka se fihlang ho 2 km (100BASE-FX), 1 Gbit/s ho fihla ho 1000m, le 10 Gbit/s ho fihla ho 550 m.Ho na le mefuta e 'meli ea li-index tsa multimode: index ea mehato le indexed graded.
Phapano ke efe lipakeng tsa single mode optical fiber le multimode?
Khatholoho: The attenuation ea multimode fiber e phahame ho feta SM fiber ka lebaka la bophara ba eona bo boholo ba mantlha.Mokotla oa faeba oa thapo e le 'ngoe o moqotetsane haholo, kahoo lebone le fetang har'a likhoele tsena tsa fiber optical ha le bontšoe ka makhetlo a mangata haholo, e leng ho bolokang ho fokotseha ho fokolang.
| Single Mode Fiber | Mqetellongo na le Fiber | ||
| Attenuation ka 1310nm | 0.36dB/km | Attenuation ka 850nm | 3.0dB/km |
| Attenuation ka 1550nm | 0.22dB/km | Attenuation ka 1300nm | 1.0dB/km |
Core bophara:Phapang e kholo lipakeng tsa multimode le single mode fiber ke hore ea pele e na le bophara bo boholo ba mantlha, hangata e na le bophara ba mantlha ba 50 kapa 62.5 µm le bophara ba 125 µm.Le hoja fiber e tloaelehileng ea mode e le 'ngoe e na le bophara ba mantlha pakeng tsa 8 le 10 µm le bophara ba ho koala ba 125 µm.
Bophahamo ba motlakase
Kaha fiber ea multimode e na le boholo bo boholo ba mantlha ho feta fiber ea mofuta o le mong, e ts'ehetsa mokhoa o fetang o le mong oa phatlalatso.Ntle le moo, joalo ka likhoele tsa multimode, likhoele tsa mofuta o le mong li bonts'a phallo ea modal e bakoang ke mekhoa e mengata ea sebaka, empa phallo ea modal ea fiber e le 'ngoe e tlase ho feta mefuta e mengata.Ka mabaka ana, likhoele tsa mofuta o le mong li ka ba le bandwidth e phahameng ho feta likhoele tsa mefuta e mengata.
'Mala oa jekete
Ka linako tse ling 'mala oa baki o sebelisoa ho khetholla likhoele tsa multimode ho tse ling tsa mofuta o le mong.Tekanyetso ea TIA-598C e khothaletsa, bakeng sa likopo tseo e seng tsa sesole, tšebeliso ea jekete e mosehla bakeng sa fiber e le 'ngoe, le lamunu kapa aqua bakeng sa fiber ea multimode, ho latela mofuta.Barekisi ba bang ba sebelisa violet ho khetholla tšebetso e phahameng ea OM4 ea puisano ea fiber ho tsoa mefuteng e meng.
Nako ea poso: Sep-03-2021