Kuphando nophuhliso lwetekhnoloji entsha ye-optical fiber, i-SDM space division multiplexing itsale ingqalelo enkulu. Kukho iindlela ezimbini eziphambili zokusetyenziswa kwe-SDM kwi-optical fibers: i-core division multiplexing (CDM), apho udluliselo lwenziwa nge-core ye-multi-core optical fiber. Okanye i-Mode Division Multiplexing (MDM), edlulisela ngeendlela zokusasaza ze-few-mode okanye i-multi-mode fiber.
I-Core Division Multiplexing (CDM) fibre ngokusisiseko isekelwe ekusebenziseni izikimu ezimbini eziphambili.
Eyokuqala isekelwe ekusetyenzisweni kwee-single-core fibre bundles (ii-fibre ribbons), apho ii-parallel single-mode fibre fibre zihlanganiswa ndawonye ukuze zenze ii-fibre bundles okanye ii-ribbons ezinokubonelela ngee-comparallel links ezifikelela kumakhulu.
Ukhetho lwesibini lusekelwe ekudluliseni idatha phezu kwesiseko esinye (imo enye kwisiseko ngasinye) efakwe kwifayibha efanayo, oko kukuthi kwifayibha ye-MCF multicore. Isiseko ngasinye siphathwa njengetshaneli enye eyahlukileyo.
I-MDM (Module Division Multiplexing) fibre ibhekisa ekudlulisweni kwedatha kwiindlela ezahlukeneyo ze-optical fiber, nganye kuzo inokuthathwa njengetshaneli eyahlukileyo.
Iintlobo ezimbini eziqhelekileyo ze-MDM yi-multimode fibre (MMF) kunye ne-fractional mode fibre (FMF). Umahluko ophambili phakathi kwezi zimbini linani leendlela (iitshaneli ezikhoyo). Ekubeni ii-MMF zinokuxhasa inani elikhulu leendlela (amashumi eendlela), i-intermodal crosstalk kunye ne-differential mode group delay (DMGD) ziba zibalulekileyo.
Kukwakho ne-photonic crystal fiber (PCF) enokuthiwa yeyolu hlobo. Isekelwe kwiimpawu zeekristale ze-photonic, ezithintela ukukhanya nge-bandgap effect kwaye zidlulisele ukukhanya kusetyenziswa imingxuma yomoya kwindawo yayo enqamlezileyo. I-PCF yenziwe kakhulu ngezinto ezifana ne-SiO2, i-As2S3, njl.njl., kwaye imingxuma yomoya ifakwa kwindawo ejikeleze umbindi ukuze kutshintshwe umahluko kwi-refractive index phakathi kombindi kunye ne-cladding.
Ifayibha ye-CDM ingachazwa njengokongeza nje ulwazi lwee-fiber cores ze-single-mode ezihambelanayo, ezifakwe kwi-cladding efanayo (i-multi-core fibre MCF okanye i-single-core fibre bundle). I-MDM mode division multiplexing kukusetyenziswa kweendlela ezininzi ze-spatial-optical kwi-transmission medium njengeendlela zedatha ezizimeleyo/ezahlukeneyo/ezizimeleyo, ngokuqhelekileyo kwi-transmission edibeneyo yomgama omfutshane.
Ixesha leposi: Juni-26-2025