Iimpawu zeIsandisi-lizwi se-EDFA
Umgaqo wokusebenza kwee-fiber amplifiers ufana kakhulu nowe-solid-state lasers. Amanqanaba amandla afanelekileyo, ukufunxwa kunye ne-gain spectra yee-erbium ions (Er ³ ⁺) kwii-quartz optical fibers ziboniswe kuMfanekiso 2. Iipropati ze-quartz ezingabonakaliyo zandisa amanqanaba amandla ee-erbium ions zibe zii-bands, kwaye utshintsho oluninzi lunokusetyenziswa ukupompa ii-erbium ions, apho amaza ombane epompo asebenzayo angama-980 nm kunye ne-1480 nm.
Ubude bomda obusebenzayo be-EDFA Amplifier buwela ngqo kuluhlu oluphezulu lwamaza oluyi-1330-1600nm lonxibelelwano lwe-fiber optic. I-EDFA Amplifier esebenza kwi-C-band (1530-1565nm) enefestile yokulahleka kwefayibha ephantsi isetyenzisiwe kakhulu. Ukuze kusetyenziswe ngokupheleleyo izixhobo ze-bandwidth zeefayibha ze-optical, abantu bazimisele ukuphuhlisa ii-EDFA kwi-L-band (1570-1610nm). I-L-band ikwindawo engasemva kwe-EDFA gain spectrum, ngoko ke ii-L-band EDFA kufuneka zisebenzise iifayibha ezinde kunye namandla aphezulu epompo, okanye zisebenzise iifayibha ezixineneyo kakhulu.
Isandisi-lizwi se-EDFA Opticaline-gain ephezulu (engaphezulu kwe-30-50dB) kwaye inika i-flat gain phezu kwe-wide frequency band (ukuya kuthi ga kwi-30nm), nto leyo eyenza ifaneleke ukukhulisa imiqondiso kwiitshaneli ezininzi ze-optical, ingakumbi kwiinkqubo ze-dense wavelength division multiplexing (DWDM). Ingxolo ephantsi (4-8dB), isondela kumda we-quantum. Xa isetyenziswa kwiinkqubo ze-WDM, i-crosstalk phakathi kweetshaneli iyancitshiswa kwaye ii-amplifier ezininzi zinokutsalwa. Inamandla aphezulu okuphuma kwe-saturation (10-20 dBm), ingasetyenziswa njenge-power amplifier emva kwe-transmitter ukwandisa umgama wokudlulisela okanye inani elabelweyo lee-optical nodes ngaphandle kwemigca yokudlulisela. Amandla epompo afunekayo aphantsi (amashumi ee-milliwatts). I-gain ayixhomekekanga kwimeko ye-polarization yefayibha, ngoko ke inozinzo oluhle. Kulula ukuyidibanisa neefayibha ze-optical ze-transmission, kunye nokulahleka okuphantsi kwe-coupling (<1dB). Ngaphandle komthombo wepompo, i-EDFAIsandisi-lizwi sokubonayenziwe ngezinto ezingasebenziyo. Ke ngoko, xa kuthelekiswa nee-relay ze-elektroniki ezivuselelayo ezintsonkothileyo nezibizayo, iindleko zenkqubo zincitshisiwe kakhulu kwaye ukuthembeka kuphuculwe.
Ukongeza, iimpawu zokukhulisaI-EDFAI-Amplifier ayixhomekekanga kwisantya se-bit yenkqubo kunye nefomathi yedatha, ngoko ke inokukhulisa nokudlulisa ulwazi lwedijithali kunye nolwe-analog. Iingxaki ze-erbium doped fiber amplifier zezi: ubungakanani obukhulu; Ixesha lokusebenzisa umthombo wepompo alide; Ayinakudityaniswa nezinye izixhobo, nto leyo ethintela ukusetyenziswa kwei-amplifier yefayibha efakwe i-erbiumkwi-optoelectronic integration (OEIC). Ukongeza, i-gain bandwidth ye-EDFA Amplifier igubungela kuphela inxalenye yefestile yokulahleka okuphantsi kwe-quartz single-mode fiber, ethintela inani leetshaneli ze-wavelength ezinokwamkelwa yi-fiber, nto leyo ekwayingxaki yayo.
Ixesha leposi: Epreli-28-2026