Ukukhanya esikujwayele kakhulu impela ukukhanya esikubona ngeso lenyama.Amehlo ethu azwela kakhulu ekukhanyeni okunsomi ngobude begagasi obungu-400nm kuya ekukhanyeni okubomvu ku-700nm.Kodwa kuma-optical fibers athwala imicu yengilazi, sisebenzisa ukukhanya endaweni ye-infrared.Lezi zibani zinamaza amade amaza, zinomonakalo omncane emiculweni yokubona, futhi azibonakali ngeso lenyama.Lesi sihloko sizokunikeza incazelo enemininingwane yobude begagasi befiber optical nokuthi kungani kufanele ukhethe lawa maza.
Incazelo yobude begagasi
Eqinisweni, ukukhanya kuchazwa ubude bako beza.I-Wavelength iyinombolo emelela i-spectrum yokukhanya.Imvamisa, noma umbala, wokukhanya ngakunye unobude beza obuhambisana nakho.Ubude begagasi nemvamisa kuhlobene.Ngokuvamile, imisebe ye-short-wave ibonakala ngobude bayo be-waveleng, kuyilapho imisebe yamaza amade ibonakala ngobuningi bayo.
Amaza amaza ajwayelekile kumafiber optical
Ubude begagasi obujwayelekile buvamise ukuba ngu-800 kuya ku-1600nm, kodwa njengamanje, amaza amaza asetshenziswa kakhulu emiculweni ye-optical ngu-850nm, 1300nm kanye no-1550nm.I-Multimode fiber ifaneleka kumaza wamaza angu-850nm no-1300nm, kuyilapho i-fiber yemodi eyodwa isetshenziswa kangcono kumaza wamaza angu-1310nm no-1550nm.Umehluko phakathi kwe-wavelength engu-1300nm no-1310nm usegameni lesintu kuphela.Ama-Lasers kanye nama-diode akhipha ukukhanya nawo asetshenziselwa ukusabalalisa ukukhanya kuma-optical fibers.Amalaza made kunamadivayisi emodi eyodwa anamaza wamaza angu-1310nm noma angu-1550nm, kuyilapho ama-diode akhipha ukukhanya asetshenziselwa amadivayisi ama-multimode anobude obungamaza angu-850nm noma angu-1300nm.
Kungani ukhetha lawa maza wamaza?
Njengoba kushiwo ngaphambili, amaza amaza asetshenziswa kakhulu kuma-optical fibers yi-850nm, 1300nm kanye ne-1550nm.Kodwa kungani sikhetha lawa maza okukhanya amathathu?Kungenxa yokuthi amasignali okukhanya alawa ma-wavelengths amathathu anokulahlekelwa okuncane kakhulu lapho edluliselwa ku-fiber optical.Ngakho-ke afaneleka kakhulu njengemithombo yokukhanya etholakalayo yokudlulisela emiculweni ye-optical.Ukulahlekelwa kwe-glass fiber ngokuyinhloko kuvela ezicini ezimbili: ukulahlekelwa ukumuncwa kanye ukulahlekelwa okuhlakazekayo.Ukulahleka kokumuncwa kwenzeka ikakhulukazi kumaza amaza athile esiwabiza ngokuthi “amabhande amanzi”, ikakhulukazi ngenxa yokumuncwa kwamaconsi amanzi okulandelela ezintweni zengilazi.Ukusabalalisa kubangelwa ikakhulukazi ukuphindaphinda kwama-athomu nama-molecule engilazi.Ukuhlakazeka kwamagagasi amade kuncane kakhulu, lokhu kuwumsebenzi oyinhloko we-wavelength.
Ekuphetheni
Ngemva kokufunda lesi sihloko, ungase ube nokuqonda okuyisisekelo kwamaza wamaza asetshenziswa emicu optical.Ngenxa yokuthi ukulahleka kwe-wavelength okungu-850nm, 1300nm kanye no-1550nm kuphansi kakhulu, kuyisinqumo esingcono kakhulu sokuxhumana nge-fiber optical.
Isikhathi sokuthumela: Jan-20-2021 
