Mu bushakashatsi no guteza imbere ikoranabuhanga rishya rya fibre optique, SDM space division multiplexing yakuruye abantu benshi. Hari icyerekezo kibiri cy'ingenzi cyo gukoresha SDM muri fibre optique: core division multiplexing (CDM), aho kohereza binyura mu mutima wa fibre optique ifite core nyinshi. Cyangwa Mode Division Multiplexing (MDM), yohereza binyuze mu buryo bwo gukwirakwiza bwa fibre ifite imiterere mike cyangwa imiterere myinshi.
Fibre ya CDM (Core Division Multiplexing) ishingiye ku ikoreshwa ry'uburyo bubiri bw'ingenzi.
Iya mbere ishingiye ku ikoreshwa ry'udupfunyika tw'umunyu-ngore umwe (udupfunyika tw'umunyu-ngore), aho udupfunyika tw'uburyo bumwe duhurira hamwe kugira ngo habeho udupfunyika tw'umunyu-ngore cyangwa udupfunyika dushobora gutanga amasano agera ku magana ajyanye.
Uburyo bwa kabiri bushingiye ku kohereza amakuru ku gice kimwe cy’ingenzi (uburyo bumwe kuri buri gice cy’ingenzi) kiri muri fibre imwe, ni ukuvuga muri fibre ya MCF multicore. Buri gice cy’ingenzi gifatwa nk’umuyoboro umwe wihariye.
Fibre ya MDM (Module Division Multiplexing) yerekeza ku kohereza amakuru ku buryo butandukanye bwa fibre optique, buri imwe muri zo ikaba ishobora gufatwa nk'umuyoboro wihariye.
Ubwoko bubiri busanzwe bwa MDM ni fibre ya multimode (MMF) na fibre ya fractional mode (FMF). Itandukaniro rikomeye hagati y’ubwo bubiri ni umubare w’uburyo (imiyoboro iboneka). Kubera ko MMF zishobora gushyigikira uburyo bwinshi (uburyo mirongo), intermodal crosstalk na differential mode group delay (DMGD) biba ingenzi.
Hari kandi fibre ya kristu y’ubutare (PCF) ishobora kuvugwa ko iri muri ubwo bwoko. Ishingiye ku miterere ya kristu y’ubutare, ifunga urumuri binyuze mu ngaruka za bandgap hanyuma ikarwohereza hakoreshejwe imyobo y’umwuka iri mu gice cyayo. PCF ikorwa ahanini mu bikoresho nka SiO2, As2S3, nibindi, kandi imyobo y’umwuka yinjizwa mu gace gakikije ishingiro kugira ngo hahindurwe itandukaniro riri hagati y’ishingiro n’ipfundo.
Fibre ya CDM ishobora gusobanurwa nk'inyongera y'imirongo y'imirongo y'imirongo ijyanye n'uburyo bumwe, ishyizwe mu gitambaro kimwe (MCF y'imirongo myinshi cyangwa fibre imwe y'imirongo ibiri). Kugabanya imirongo ya MDM ni ugukoresha uburyo bwinshi bwo kwerekana imiterere y'ahantu mu buryo bwo kohereza amakuru nk'imiyoboro y'amakuru yihariye/itandukanye/igenga, akenshi mu kohereza amakuru ku ntera ngufi.
Igihe cyo kohereza: Kamena-26-2025