Optical fiber ke fiber e pepeneneng e tenyetsehang e entsoeng ka khalase kapa polasetiki e ntšitsoeng, e teteaneng hanyane ho feta moriri oa motho.Optical fiber ke mokhoa o sebelisoang haholo oa ho fetisa leseli lipheletsong ka bobeli, 'me o sebelisoa haholo puisanong ea optical fiber.Optical fiber e na le sebaka se selelele sa phetisetso le bandwidth e phahameng ho feta thapo e nang le mehala.Hangata fiber ea optical e na le "low-refractive-index transparent core" le lintho tse koahelang pepenene.Optical fiber e sebetsa joalo ka mokhanni oa maqhubu a leseli, e bakang khanya e felletseng ea leseli mokokotlong oa fiber.
Ka kakaretso, ho na le mefuta e 'meli ea likhoele tsa optical: tse tšehetsang litsela tse ngata tsa phatlalatso kapa mekhoa e fapaneng e bitsoa multimode fibers (MMF), le tse tšehetsang mokhoa o le mong li bitsoa single mode fibers (SMF).Empa phapang ke efe pakeng tsa bona?Ho bala sehlooho sena ho tla u thusa ho fumana karabo.
1. Fibre ea mofuta o le mong ke eng?
Puisanong ea optical fiber, fiber e le 'ngoe (SMF) ke fiber ea optical e fetisang ka ho toba lipontšo tsa optical ka mokhoa oa lateral.Fiber ea mofuta o le mong e sebetsa ka sekhahla sa data sa 100M / s kapa 1 G / s, mme sebaka sa phetisetso se ka fihla bonyane lik'hilomithara tse 5.Ka tloaelo, fiber ea mode e le 'ngoe e sebelisoa bakeng sa phetisetso ea mats'oao a hole.
2. Multimode fiber ke eng?
Multimode fiber (MMF) e sebelisoa haholo-holo bakeng sa puisano ea likhoele tsa sebaka se khuts'oane, joalo ka meahong kapa likhampaseng.Lebelo le tloaelehileng la phetisetso ke 100M / s, sebaka sa phetisetso se ka fihla ho 2km (100BASE-FX), 1 G / s e ka fihla ho 1000m, 10 G / s e ka fihla ho 550m.Ho na le mefuta e 'meli ea index ea refractive: index ea maemo le index ea mehato.
3. Phapano ke efe lipakeng tsa single-mode le multimode fiber?
1. Bophara ba mantlha
Phapang e kholo lipakeng tsa fiber ea multimode le single-mode ke hore ea pele e na le bophara bo boholo, hangata bophara ba mantlha ba 50 kapa 62.5 µm, athe fiber ea mofuta o le mong e na le bophara ba 8 le 10 µm, sephutheloana sa bobeli. Li-diameter tsa lera kaofela ke 125µm.
2. Mohloli oa leseli
Hangata laser le LED li sebelisoa e le mehloli ea leseli.Mehloli ea leseli la laser e theko e boima haholo ho feta mehloli ea leseli la LED hobane leseli leo le le hlahisang le ka laoloa ka nepo ebile le na le matla a phahameng.Leseli le hlahisoang ke mehloli ea leseli la LED le qhalakanngoa haholoanyane (mekhoa e mengata ea leseli), 'me mehloli ena ea leseli e sebelisoa haholo ho li-jumpers tsa multimode fiber.Ka nako e ts'oanang, mohloli oa leseli la laser (o hlahisang leseli le haufi le mokhoa o le mong) hangata o sebelisoa bakeng sa li-jumpers tsa fiber tsa mofuta o le mong.
3. Bophahamo ba motlakase
Hobane fiber ea multimode e na le boholo bo boholo ba mantlha ho feta fiber ea mofuta o le mong, e ts'ehetsa mekhoa e mengata ea phetisetso.Ntle le moo, joalo ka likhoele tsa multimode, likhoele tsa mofuta o le mong li boetse li bonts'a phallo ea modal e bakoang ke mekhoa e mengata ea sebaka, empa mokhoa oa ho hasana ha likhoele tsa mofuta o le mong o tlase ho feta likhoele tsa multimode.Ka mabaka ana, fiber ea mofuta o le mong e na le bandwidth e phahameng ho feta fiber ea multimode.
4. 'Mala oa Sheath
Ka linako tse ling 'mala oa baki o sebelisoa ho khetholla li-jumpers tsa multimode fiber ho tloha ho multimode fiber jumpers.Ho ea ka tlhaloso e tloaelehileng ea TIA-598C, bakeng sa lits'ebetso tseo e seng tsa sesole, likhoele tsa optical tsa mofuta o le mong li sebelisa baki e ka ntle e mosehla, 'me likhoele tsa optical tsa mefuta e mengata li sebelisa baki ea ka ntle ea lamunu kapa aqua-green.Ho ea ka mefuta e sa tšoaneng, bahlahisi ba bang ba sebelisa pherese ho khetholla fiber e phahameng ea OM4 ho tloha mefuteng e meng ea fiber.
5. Ho hasana ha Modal
Mehloli ea leseli la LED ka linako tse ling e sebelisoa ka fiber ea multimode ho theha letoto la li-wavelengths tse jalang ka lebelo le fapaneng.Sena se tla fella ka ho hasana ka mekhoa e mengata, e fokotsang sebaka se sebetsang sa phetisetso ea li-multi-mode fiber jumpers.Ka lehlakoreng le leng, laser e sebelisoang ho khanna fiber ea mofuta o le mong e hlahisa bolelele bo le bong ba khanya.Ka hona, phallo ea eona ea modal e nyane haholo ho feta fiber ea multimode.Ka lebaka la phallo ea modal, fiber ea multimode e na le sekhahla se phahameng sa katoloso ea pulse ho feta fiber e le 'ngoe, e fokotsang matla a phetiso ea tlhahisoleseling ea fiber ea multimode.
6. Theko
Bakeng sa fiber ea multimode e ka tšehetsa mekhoa e mengata ea optical, theko ea eona e phahame ho feta fiber e le 'ngoe.Empa mabapi le lisebelisoa, kaha fiber ea mofuta o le mong hangata e sebelisa li-solid-state laser diode, thepa ea fiber ea mofuta o le mong e theko e boima ho feta thepa ea multimode fiber.Ka hona, litšenyehelo tsa ho sebelisa fiber ea multimode li tlase haholo ho feta litšenyehelo tsa ho sebelisa fiber ea singlemode.
4. Ke fiber ea mofuta ofe e lokelang ho khethoa?
Nahana ka sebaka sa phetisetso se koahetsoeng le tekanyetso ea kakaretso.Haeba sebaka se ka tlase ho lik'hilomithara tse 'maloa, fiber ea multimode e tla sebetsa hantle,' me litšenyehelo tsa tsamaiso ea phetisetso (transmitter le receiver) li tla tloha ho 3300 yuan ho ea ho 5300 yuan.Haeba sebaka se koahetsoeng se feta lik'hilomithara tse 6-10, fiber ea mode e le 'ngoe e lokela ho khethoa, empa ka lebaka la litšenyehelo tse eketsehileng tsa laser diode, litšenyehelo tsa tsamaiso ea phetisetso hangata li tla feta 6700 yuan.