Ocwaningweni nasekuthuthukisweni kobuchwepheshe obusha be-fiber optical, i-SDM space division multiplexing idonsele ukunakwa okukhulu.Kunezinkomba ezimbili eziyinhloko zokusetshenziswa kwe-SDM kuma-optical fibres: core division multiplexing (CDM), lapho ukudluliswa kwenziwa ngomnyombo we-multi-core optical fibre. Noma I-Mode Division Multiplexing (MDM), edlulisa ngamamodi okusakaza e-fiber enemodi embalwa noma enemodi eminingi.
I-Core Division Multiplexing (CDM) ifayibha isekelwe ekusetshenzisweni kwezikimu ezimbili eziyinhloko.
Esokuqala sisekelwe ekusetshenzisweni kwezinqwaba zefiber eziwumgogodla owodwa (amaribhoni e-fibre), lapho imicu yemodi eyodwa ehambisanayo ihlanganiswe ndawonye ukuze yakhe izinyanda zefiber noma amaribhoni anganikeza kufika kumakhulu ezixhumanisi ezihambisanayo.
Inketho yesibili isekelwe ekudluliseleni idatha ngengqikithi eyodwa (imodi eyodwa umgogodla ngamunye) eshumekwe ku-fiber efanayo, okungukuthi ku-MCF multicore fiber. Ingqikithi ngayinye ithathwa njengesiteshi esisodwa esihlukile.
I-MDM (Module Division Multiplexing) i-fiber ibhekisela ekudlulisweni kwedatha ngezindlela ezihlukahlukene ze-optical fibre, ngayinye yazo engabhekwa njengeshaneli ehlukile.
Izinhlobo ezimbili ezijwayelekile ze-MDM i-multimode fiber (MMF) kanye ne-fractional mode fibre (FMF). Umehluko omkhulu phakathi kwalokhu okubili inani lamamodi (amashaneli atholakalayo). Njengoba ama-MMF engakwazi ukusekela inani elikhulu lamamodi (amashumi amamodi), i-intermodal crosstalk kanye nokulibaziseka kweqembu lemodi yokuhlukanisa (DMGD) kuba okuphawulekayo.
Kukhona futhi i-photonic crystal fiber (PCF) okungashiwo ukuthi ingeyalolu hlobo. Isekelwe ezimpahleni zamakristalu e-photonic, ahlanganisa ukukhanya ngokusebenzisa umphumela we-bandgap futhi ayidlulise kusetshenziswa izimbobo zomoya esigabeni sayo esiphambanayo.I-PCF yenziwe ngokuyinhloko ngezinto ezifana ne-SiO2, i-As2S3, njll., futhi izimbobo zomoya zethulwa endaweni ezungeze umgogodla ukuze kuguqulwe umehluko kunkomba ye-refractive phakathi kwengqikithi kanye nesigqoko.
I-CDM fiber ingachazwa njengokwengezwa nje kwe-parallel single-mode fibre cores ethwala ulwazi, eshumekwe ku-cladding efanayo (multi-core fiber MCF noma i-single-core fiber bundle). Ukuphindaphinda kwe-MDM mode division multiplexing kuwukusetshenziswa kwezindlela eziningi ze-spatial-optical medium endaweni yokudlulisela njengamashaneli edatha angawodwana/ahlukene/azimele, ngokuvamile ukuze axhumane nebanga elifushane.
Isikhathi sokuthumela: Jun-26-2025