Ngawo-1970s, kwakunqunywe ukuthi uma ukudluliswa kwe-Optical kungafinyelela ngaphansi kwama-20 db / km, lesi sixazululo singabeka esikhundleni socingo lwethusi eMakethe Yezokuxhumana. Futhi kwenzeka! Namuhla,i-fiber ye-OpticalIne-wire ethulisiwe yethusi yokuqalisa ukusebenza kwayo, kepha futhi idlule kude ukwanda okungaba khona kwamanethiwekhi okuxhumana ngocingo. Ibanga lokuhambisa ngaphandle kokuphindaphindwayo, ukuncishiswa kwesisindo, kanye nenani lolwazi olungadluliselwa yizibonelo ezimbalwa lapho i-Optical fiber inezintambo zethusi ezihamba phambili.
NxaI-Optical Fiberszitholakala emikhakheni ehlukahlukene, ezinjengezicelo zezokwelapha, ama-lighters, ama-lasers enkombeni yokukhiqiza, nokuningi, imakethe yezokuxhumana ihlala isemakethe ebaluleke kakhulu.
Ukuhlangabezana nesidingo, izinkampani ziqhubeka kabusha ukukhulisa i-bandwidth kumanethiwekhi wamanje ukuze ahlangabezane nezifiso zabasebenzisi ukuthola idatha engaphezulu, elethwe ngokushesha.
Imicu esebenzayo itholakala ngokuyinhloko ku-fiber lasers kanye nama-amplifiers. Nazi ezinye izibonelo zokusetshenziswa kwazo emakethe yezokuxhumana:
I-Erbium (ER) FIBERS: Lezi zisetshenziswa kakhulu ekwakhiweni kwe-EDFA (i-erbium-doped fiber amplifier) amplifiers. Bakhombisa ukumuncwa okuqinile ngo-1550 nm ngokusebenza kahle kwesiginali kumaqembu e-C no-L. Le micu ngokuvamile i-single-clad, okusho ukuthi zombili ukukhanya kwesiginali nephampu kumele kuhlanganiswe kumnyombo wefayibha ohlelweni lwe-amplification.
I-Erbium-ytterbium (EY): Le micu yenzelwe ukusebenza ngo-1550 nm. Bakhombisa ukumuncwa okukhulu ekuklameni kwama-amplifiers aphezulu anamandla (> 5w). Imvamisa isetshenziswa ekucushweni okuthi "kabili-clad" ngezinhlelo ze-amplification ezigcwele nge-multimode light inged in the clodding.
Imicu emihle
Imicu ye-Passive inengxenye ebalulekile yamanethiwekhi ezokuxhumana. Ziklanyelwe ngokukhethekile ukuxhunywa ngaphandle komthungo ngemicu esebenzayo. Le mikhiqizo ihlinzeka amakhasimende ngesisombululo se-turnkey ukuqinisekisa ukuxhumana okuphelele kwesisombululo esithembekile, esiphakeme.
I-EXAY Fibers: Uhlelo lwe-amplifier ye-Optical Fiber Amplifier ludinga izingxenye ezingezinkomba njengabakhohlakala, ama-isolators, ukugcwala kwe-bragg, nemicu yokudlulisa phakathi kwalezi zinto ezahlukahlukene. I-Passive Fibers inikeza ukudluliswa okuhle ngaphandle kwesidingo sokutholwa noma imisebenzi yokuphuma ukwenza lezi zinto.
I-Attenuating Fibers: Le micu inika amandla okuqaphela ukuqondisisa ama-Signal ahlukahlukene ngaphezulu kwama-wavelength ahlukahlukene. Amamodeli ahlukahlukene akhona ngokuya nge-attenuation efiselekayo, yamanethiwekhi aseTerrestrial noma angaphansi komhlaba. Le micu ilungele ukukalwa kwesiginali noma ukusatshalaliswa kwesiginali okulinganayo phakathi kwemicu ehlukene. Baphinde batholwe kuma-lasers anamandla amakhulu ukukala ukuqina kwesiginali komtshina ebangeni elisebenzayo eliqondile.
I-Polarization-Ukulondolozwa Kwemicu (PM) Ipharamitha eligcina isikhathi eside futhi lishaye ubude bachaza izakhiwo ze-birefringence zale micu.
Uma unentshisekelo ngemikhiqizo yethu noma unemibuzo, sicela ukhululekeXhumana nathiFuthi sizokuphendula kungakapheli amahora angama-24.
