N'ime nyocha na mmepe nke teknụzụ fiber optic ọhụrụ, SDM oghere nkewa multiplexing adọtawo nnukwu nlebara anya. E nwere ụzọ abụọ bụ isi maka ntinye nke SDM na eriri anya: isi nkewa multiplexing (CDM), nke a na-ebufe site na isi nke multi-core optical fiber. Ma ọ bụ Mode Division Multiplexing (MDM), nke na-ebufe site na ụdị mgbasa nke ụdị ole ma ọ bụ eriri multi-mode.
Core Division Multiplexing (CDM) eriri bụ ụkpụrụ dabere na iji atụmatụ abụọ bụ isi.
Nke mbụ gbadoro ụkwụ na iji otu eriri eriri otu isi (fibre ribbons), bụ nke a na-ejikọta eriri ndị na-emekọ ihe ọnụ iji mepụta eriri fiber ma ọ bụ rịbọn nke nwere ike inye ihe ruru narị narị njikọ yiri ya.
Nhọrọ nke abụọ dabere na ịnyefe data n'ofe otu isi (otu ọnọdụ kwa isi) agbakwunyere n'otu eriri, ya bụ na eriri multicore MCF. A na-ewere isi ọ bụla dị ka ọwa otu dị iche iche.
MDM (Module Division Multiplexing) eriri na-ezo aka na nnyefe data n'elu ụdị dị iche iche nke eriri anya, nke ọ bụla nwere ike iwere dị ka ọwa dị iche.
Ụdị abụọ a na-ahụkarị nke MDM bụ eriri multimode (MMF) na eriri mode fractional (FMF). Isi ihe dị iche n'etiti abụọ ahụ bụ ọnụọgụ nke ụdịdị (ọwa dị). Ebe MMF nwere ike ịkwado ọnụ ọgụgụ dị ukwuu nke ụdịdị (iriri nke ụdịdị), okwu mkparịta ụka intermodal na igbu oge otu ọnọdụ dị iche (DMGD) na-aghọ ihe dị mkpa.
Enwekwara eriri kristal photonic (PCF) nke enwere ike ịsị na ọ bụ nke ụdị a. Ọ na-adabere na njirimara nke kristal photonic, nke na-ejikọta ìhè site na mmetụta bandgap ma na-ebufe ya site na iji oghere ikuku na mpaghara cross-section ya.PCF na-emekarị nke ihe ndị dị ka SiO2, As2S3, wdg, na oghere ikuku na-ewebata na mpaghara gburugburu isi iji gbanwee ọdịiche dị na refractive index n'etiti isi na cladding.
Enwere ike ịkọwa eriri CDM dị ka naanị mgbakwunye nke eriri eriri eriri otu ụdị na-ebu ozi, agbakwunyere n'otu mkpuchi (multi-core fiber MCF or single-core fiber bundle) .MDM mode nkewa multiplexing bụ ojiji nke multiple spatial-optical modes na nnyefe usoro dị ka onye / iche iche / onwe data ọwa, a na-emekarị maka mkpụmkpụ-isi njikọ njikọ.
Oge nzipu: Jun-26-2025