Mekhoa ea ho kopanya li-optical le lenyalo la tsona bakeng sa on-chip: tlhahlobo

Mekhoa ea ho kopanya li-optical le lenyalo la tsona bakeng sa li-chip lepuisano ea faeba ea opticaltlhahlobo

Mekhoa ea ho kopanya maqhubu a optical ke taba ea lipatlisiso e potlakileng, 'me litsebi lefatšeng ka bophara li ntse li etsa lipatlisiso tse tebileng tšimong ena. Ho theosa le lilemo, mahlale a mangata a multiplex a kang wavelength division multiplexing (WDM), mode division multiplexing (MDM), space division multiplexing (SDM), polarization multiplexing (PDM) le orbital angular momentum multiplexing (OAMM) a 'nile a sisinngoa. Theknoloji ea Wavelength division multiplexing (WDM) e nolofalletsa matšoao a mabeli kapa ho feta a optical a maqhubu a fapaneng ho fetisoa ka nako e le 'ngoe ka fiber e le 'ngoe, e sebelisa ka botlalo litšobotsi tse tlase tsa tahlehelo ea fiber sebakeng se seholo sa wavelength. Khopolo-taba ena e ile ea hlahisoa ka lekhetlo la pele ke Delange ka 1970, 'me e bile feela ka 1977 moo lipatlisiso tsa motheo tsa theknoloji ea WDM li qalileng, tse shebaneng le ts'ebeliso ea marang-rang a puisano. Ho tloha ka nako eo, ka nts'etsopele e tsoelang pele eafaeba ea optical, mohloli oa leseli, sesebelisoa sa ho lemoha fotole masimo a mang, ho batlisisa ha batho theknoloji ea WDM le hona ho potlakile. Molemo oa polarization multiplexing (PDM) ke hore palo ea phetiso ea lets'oao e ka atolosoa, hobane matšoao a mabeli a ikemetseng a ka ajoa boemong ba orthogonal polarization ba khanya e tšoanang, 'me liteishene tse peli tsa polarization lia aroloa 'me li khetholloa ka boikemelo qetellong ea ho amohela.

Ha tlhoko ea litefiso tse phahameng tsa data e ntse e tsoela pele ho hola, tekanyo ea ho qetela ea tokoloho ea multiplexing, sebaka, e 'nile ea ithutoa ka matla lilemong tse leshome tse fetileng. Har'a tsona, multiplexing ea karohano ea mode (MDM) e hlahisoa haholo-holo ke li-transmitter tsa N, tse bonoang ke multiplexer ea mokhoa oa sebaka. Qetellong, lets'oao le tšehetsoang ke mokhoa oa sebaka le fetisetsoa ho faeba ea mokhoa o tlase. Nakong ea phatlalatso ea lets'oao, mekhoa eohle e bolelele ba leqhubu bo tšoanang e tšoaroa e le yuniti ea kanale e kholo ea Space Division multiplexing (SDM), ke hore, ea atolosoa, ea fokotsoa le ho eketsoa ka nako e le 'ngoe, ntle le ho khona ho fihlela ts'ebetso e arohaneng ea mokhoa. Ho MDM, li-contour tse fapaneng tsa sebaka (ke hore, libopeho tse fapaneng) tsa paterone li abeloa likanale tse fapaneng. Mohlala, kanale e romelloa holim'a lehlaseli la laser le bōpehileng joaloka khutlotharo, sekwere, kapa selikalikoe. Libopeho tse sebelisoang ke MDM lits'ebetsong tsa lefats'e la 'nete li rarahane haholo 'me li na le litšobotsi tse ikhethang tsa lipalo le tsa' mele. Theknoloji ena mohlomong ke katleho e kholo ka ho fetisisa phetisong ea data ea fiber optic ho tloha lilemong tsa bo-1980. Theknoloji ea MDM e fana ka leano le lecha la ho kenya tšebetsong likanale tse ngata le ho eketsa bokhoni ba lihokelo ho sebelisoa sesebelisoa se le seng sa ho jara bolelele ba leqhubu. Momentum oa orbital angular (OAM) ke tšobotsi ea 'mele ea maqhubu a motlakase moo tsela ea phatlalatso e khethoang ke wavefront ea mohato oa helical. Kaha tšobotsi ena e ka sebelisoa ho theha likanale tse ngata tse arohaneng, wireless orbital angular momentum multiplexing (OAMM) e ka eketsa sekhahla sa phetiso ka katleho liphatlalatsong tse phahameng ho ea ho lintlha (joalo ka backhaul ea waelese kapa forward).