Kwiminyaka yakutshanje, uhlobo olutsha lwefayibha ye-optical, i-G.654E, luye lwasetyenziswa kwimigca ethile yomqolo emide kwaye ifumene iziphumo ezilungileyo. Ngoko ke, yintoni ifayibha ye-optical ye-G.654E? Ngaba ifayibha ye-G.654E iya kuthatha indawo yefayibha ye-G.652D yendabuko?
Phakathi kwiminyaka yoo-1980, ukuze kuhlangatyezwane neemfuno zonxibelelwano olude lweentambo ze-fiber optic ezingaphantsi kwamanzi, kwaveliswa i-single-mode optical fiber ene-silica core ecocekileyo kunye ne-wavelength ye-1550 nm. Ukuncipha kwayo kufutshane nale wavelength kuphantsi nge-10% kunokwe- Iifayibha zokukhanya G.652 ngasentla.
Olu hlobo lwefayibha luchazwa njengefayibha ye-G.654, kwaye igama layo ngelo xesha "yayiyifayibha ye-single-mode attenuation encinci enobude bomda obuyi-1550 nm".
Kwiminyaka yoo-1990, iteknoloji ye-WDM yaqala ukusetyenziswa kwiinkqubo zonxibelelwano lwe-optical phantsi kwamanzi. Iteknoloji ye-WDM ivumela ukuhanjiswa ngaxeshanye kwamashumi okanye amakhulu eetshaneli ze-optical phezu kwefayibha enye ye-optical, kwaye ngokusebenzisa ii-amplifiers ze-fiber optic, imiqondiso ye-optical enamandla aphezulu, ene-multi-wave length idityaniswa ibe yifayibha enye kwaye idityaniswe kwi-interface encinci. Ezi mpawu zibonisa iimpawu ezingezizo ezomgca.
Ngenxa yempembelelo engeyiyo emgceni yefayibha ye-optical, xa amandla okukhanya angena kwifayibha edlula ixabiso elithile, ukusebenza kokudluliselwa kwenkqubo kuya kuncipha kancinci kancinci ngokwanda kwamandla okukhanya angena kwifayibha.
Isiphumo esingesomgca we-optical fiber sinxulumene noxinano lwamandla okukhanya kwi-fiber core. Xa amandla okukhanya angenayo engaguqukiyo, ukwandisa indawo esebenzayo ye-cross-sectional ye-optical fiber kunye nokunciphisa uxinano lwamandla okukhanya kwi-fiber core kunokunciphisa impembelelo yesiphumo esingesomgca ekusebenzeni kothumelo. Ke ngoko, i-G.654 optical fiber yaqala ukuvelisa impikiswano ngenxa yokwanda kwendawo yayo esebenzayo ye-cross-sectional.
Ukwandisa indawo esebenzayo yefayibha kuya kukhokelela ekwandeni kwe-cutoff wavelength, kodwa ukwanda kwe-cutoff wavelength kufuneka kulawulwe ukuze kungachaphazeli ukusetyenziswa kwefayibha kwi-C band (1530nm ~ 1565nm), ngoko ke, i-cutoff wavelength yefayibha ye-G.654 isethwe kwi-1530nm.
Ngowama-2000, xa i-ITU yahlaziya umgangatho we-G.654 optical fiber, yatshintsha igama laba “yi-cut wavelength-shifted single-mode optical fiber”.
Ukuza kuthi ga ngoku, i-G.654 optical fiber ibisoloko iphawulwa kukuncipha okuphantsi kunye nendawo enkulu esebenzayo. Emva koko, i-G.654 optical fiber esetyenziselwa unxibelelwano lweentambo zasemanzini yayilungiselelwe ngokukodwa ukunciphisa kunye nendawo esebenzayo, kwaye yaphuhliswa kancinci kancinci yaba ziindidi ezine: A, B, C, kunye no-D.
Ixesha lokuthumela: Jan-10-2023
