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Iyo Yakawanda uye Yakakura Yakakura Fiber Optic Cables Transmission Technology

Fiber optic midhiya chero network inotapurirana midhiya inowanzo shandisa girazi, kana purasitiki faibha mune dzimwe nyaya dzakakosha, kufambisa network data muchimiro chechiedza pulses.Mukati memakore gumi apfuura, optical fiber yave iri kuwedzera yakakurumbira mhando yetiweki yekufambisa midhiya sezvo kudiwa kwepamusoro bandwidth uye kureba kwakareba kuchienderera mberi.

Fiber optic tekinoroji yakasiyana mukushanda kwayo pane yakajairwa copper media nekuti madhijitari "digital" light pulses pachinzvimbo chemagetsi emagetsi.Zvakangoreruka, fiber optic transmissions incode iwo uye mazero edhijitari network transmission nekubatidza nekudzima mapuruzi emwenje welaser light source, yewavelength yakapihwa, pamhepo yakanyanya.Iyo mwenje sosi inowanzova laser kana imwe mhando yeChiedza-Emitting Diode (LED).Chiedza chinobva kuchiedza chinovhenekerwa nekudzima mupateni yedata riri kukodha.Chiedza chinofamba mukati mefiibha kusvika chiratidzo chechiedza chasvika kwachiri kuda kuenda uye chinoverengwa neoptical detector.

Fiber optic cables dzakagadziridzwa kune imwechete kana kupfuura wavelengths yechiedza.Urefu hwechimwe chitubu chechiedza ndihwo hurefu, hunoyerwa nemananometers (mabhiriyoni emamita, zvakadimburirwa kuti “nm”), pakati pemasaisai epamusoro pemasaisai emwenje chaiwo kubva kuchitubu ichocho chechiedza.Iwe unogona kufunga nezve wavelength seruvara rwechiedza, uye yakaenzana nekumhanya kwechiedza kwakakamurwa ne frequency.Panyaya yeSingle-Mode Fiber (SMF), akawanda akasiyana mafungu emwenje anogona kufambiswa pamusoro peiyo yakafanana optical fiber chero nguva.Izvi zvinobatsira pakuwedzera simba rekutapurirana kwefiber optic tambo sezvo yega yega yavelength yechiedza chiratidzo chakasiyana.Nokudaro, zviratidzo zvakawanda zvinogona kutakurwa pamusoro petambo imwechete ye optical fiber.Izvi zvinoda akawanda lasers uye ma detectors uye anonzi Wavelength-Division Multiplexing (WDM).

Kazhinji, optical fibers anoshandisa wavelengths pakati pe850 ne1550 nm, zvichienderana nemwenje sosi.Kunyanya, Multi-Mode Fiber (MMF) inoshandiswa pa850 kana 1300 nm uye iyo SMF inowanzo shandiswa pa1310, 1490, uye 1550 nm (uye, muWDM masisitimu, mumasaisai akatenderedza aya ekutanga wavelengths).Tekinoroji yazvino iri kuwedzera iyi kusvika ku1625 nm yeSMF iri kushandiswa kuchizvarwa chinotevera Passive Optical Networks (PON) yeFTTH (Fiber-To-The-Home) application.Silika-yakavakirwa girazi inonyanya kujeka pane aya wavelengths, uye nekudaro kutapurirana kunoshanda zvakanyanya (kune kushomeka kwechiratidzo) mune iyi renji.Kuti uwane referensi, mwenje unooneka (chiedza chaunogona kuona) chine wavelengths pakati pe400 ne700 nm.Mazhinji fiber optic light sources anoshanda mukati mepedyo infrared renji (pakati pe750 ne2500 nm).Iwe haugone kuona infrared mwenje, asi inonyatso inoshanda fiber optic mwenje sosi.

Multimode faibha kazhinji 50/125 uye 62.5/125 mukuvaka.Izvi zvinoreva kuti core to cladding diameter reshiyo i50 microns kusvika 125 microns uye 62.5 microns kusvika 125 microns.Kune akati wandei marudzi emultimode fiber patch tambo iripo nhasi, akanyanya kuwanda ndeye multimode sc chigamba tambo fiber, LC, ST, FC, ect.

Mazano: Mazhinji echinyakare faibha optic mwenje masosi anogona kushanda chete mukati meinooneka wavelength spectrum uye pamusoro pemhando yewavelengths, kwete pane imwechete yavelength.Laser (kukwidziridzwa kwechiedza nekusimudzirwa kwekubuda kwemwaranzi) uye maLED anoburitsa mwenje mune yakawedzera kushomeka, kunyange imwe-wavelength, spectrum.

YAMBIRO: Laser mwenje masosi anoshandiswa netambo dzefiber optic (senge tambo dzeOM3) ane njodzi zvakanyanya pakuona kwako.Kutarisa zvakananga kumagumo ehupenyu hwefiber optical kunogona kukonzera kukanganisa kwakanyanya kune retinas yako.Unogona kuitwa bofu zvachose.Usambofa wakatarisa panoperera tambo yefiber optic pasina kutanga waziva kuti hapana mwenje wechiedza unoshanda.

Iyo attenuation ye optical fibers (zvese SMF neMMF) yakadzikira pakurebesa wavelengths.Nekuda kweizvozvo, kureba kureba kutaurirana kunowanzo kuitika pa1310 uye 1550 nm wavelengths pamusoro peSMF.Yakajairika optical fibers ine yakakura attenuation pa1385 nm.Iyi nhongonya yemvura inokonzerwa nemari shoma shoma (muchikamu-pa-miriyoni) yemvura yakabatanidzwa panguva yekugadzira.Kunyanya iterminal -OH(hydroxyl) molecule inoitika kuva nehunhu hwayo kuzunguzika pa1385 nm wavelength;nokudaro zvichibatsira pakudzikisira kwepamusoro panguva iyi yavelength.Kubva kare, masisitimu ekufambisirana mashoko aishanda kumativi ese enhongonya iyi.

Kana mapombi emwenje asvika kwaaenda, sensor inotora kuvepo kana kusavapo kwechiratidzo chechiedza uye inoshandura mapurusi echiedza achidzokera mumasaini emagetsi.Iyo yakawanda iyo chiratidzo chechiedza chinoparadzira kana kutarisana nemiganhu, inowedzera mukana wekurasikirwa kwechiratidzo (attenuation).Pamusoro pezvo, yega yega fiber optic yekubatanidza pakati pechiratidzo sosi uye kwainoenda inopa mukana wekurasikirwa kwechiratidzo.Saka, zvibatanidza zvinofanirwa kuiswa nenzira kwayo pane imwe neimwe yekubatanidza.Kune akati wandei marudzi efiber optic connectors aripo nhasi.Anonyanya kuzivikanwa ndeaya: ST, SC, FC, MT-RJ uye LC maitiro ekubatanidza.Ese aya marudzi ezvekubatanidza anogona kushandiswa pamwe nemultimode kana single mode fiber.

Mazhinji LAN/WAN faibha kutapurirana masisitimu anoshandisa faibha imwe yekufambisa uye imwe yekugamuchira.Nekudaro, tekinoroji yazvino inobvumira fiber optic transmitter kuti ifambise munzira mbiri pamusoro peiyo imwechete fiber strand (semuenzaniso, a.passive cwdm muxkushandisa teknolojia yeWDM).Iwo mawavelength akasiyana echiedza haapesane sezvo ma detectors akaiswa kuti averenge chaiwo wavelengths.Naizvozvo, iyo yakawanda wavelengths yaunotumira pamusoro peimwe tambo ye optical fiber, ndiyo yakawanda madetector aunoda.


Nguva yekutumira: Sep-03-2021