Eminyakeni yamuva nje, uhlobo olusha lwe-optical fiber, i-G.654E, luye lwasetshenziswa kwezinye izintambo zomgogodla ezikude futhi luye lwathola imiphumela emihle. Ngakho-ke, iyini i-optical fiber ye-G.654E? Ingabe i-G.654E fiber izothatha indawo ye-optical fiber yendabuko ye-G.652D?
Maphakathi nawo-1980, ukuze kuhlangatshezwane nezidingo zokuxhumana ezikude zezintambo ze-fiber optic zasemanzini, kwasungulwa i-fiber optical yemodi eyodwa ene-silica core emsulwa kanye ne-wavelength engu-1550 nm. Ukuncipha kwayo eduze kwaleli wavelength kuphansi ngo-10% kunokwe- I-fiber optics G.652 ngenhla.
Lolu hlobo lwefayibha luchazwa njengefayibha ye-G.654, futhi igama layo ngaleso sikhathi kwakuyi-"minimum attenuation single-mode fiber ene-wavelength engu-1550 nm".
Ngawo-1990, ubuchwepheshe be-WDM baqala ukusetshenziswa ezinhlelweni zokuxhumana ze-optical ngaphansi kwamanzi. Ubuchwepheshe be-WDM buvumela ukudluliswa ngasikhathi sinye kweziteshi eziningi ze-optical phezu kwe-fiber eyodwa ye-optical, futhi ngokusetshenziswa kwama-amplifiers e-fiber optic, izimpawu ze-optical ezinamandla aphezulu, ezinamagagasi amaningi zihlanganiswa zibe yi-fiber eyodwa futhi zihlanganiswe endaweni encane. Lezi zimpawu zibonisa izici ezingezona eziqondile.
Ngenxa yomphumela ongewona owe-optical fiber, lapho amandla okukhanya angena ku-fiber edlula inani elithile, ukusebenza kokudlulisa kohlelo kuzoncipha kancane kancane ngokwanda kwamandla okukhanya angena ku-fiber.
Umphumela ongewona owe-linear we-optical fiber uhlobene nobuningi bamandla okukhanya kwe-fiber core. Uma amandla okukhanya okufakwayo engaguquki, ukwandisa indawo ephumelelayo ye-cross-section ye-optical fiber nokunciphisa ubukhulu bamandla okukhanya kwe-fiber core kunganciphisa ithonya lomphumela ongewona owe-linear ekusebenzeni kokudlulisa. Ngakho-ke, i-G.654 optical fiber yaqala ukudala impikiswano ngenxa yokwanda kwendawo yayo ye-cross-sectional esebenza kahle.
Ukwandisa indawo ephumelelayo yefayibha kuzoholela ekwandeni kwe-cutoff wavelength, kodwa ukwanda kwe-cutoff wavelength kumele kulawulwe ukuze kungathinti ukusetshenziswa kwefayibha ku-C band (1530nm ~ 1565nm), ngakho-ke, i-cutoff wavelength yefayibha ye-G.654 isethwe ku-1530nm.
Ngo-2000, lapho i-ITU ibuyekeza indinganiso ye-G.654 optical fiber, yashintsha igama laba “i-cut wavelength-shifted single-mode optical fiber”.
Kuze kube manje, i-G.654 optical fiber ibilokhu iphawuleka ngokuncipha okuphansi kanye nendawo enkulu ephumelelayo. Ngemva kwalokho, i-G.654 optical fiber esetshenziselwa ukuxhumana ngekhebula lomkhumbi-ngwenya yayilungiselelwe ngokuyinhloko ukuncipha kanye nendawo ephumelelayo, futhi kancane kancane yathuthuka yaba izigaba ezine ezincane: A, B, C, kanye no-D.
Isikhathi sokuthunyelwe: Jan-10-2023
