A cikin bincike da haɓaka sabbin fasahohin fiber na gani, yawan rarraba sararin samaniya na SDM ya jawo hankali sosai. Akwai manyan hanyoyi guda biyu don amfani da SDM a cikin zaruruwan gani: yawan rarraba tsakiya (CDM), inda ake gudanar da watsawa ta cikin zuciyar zaruruwan gani na tsakiya da yawa. Ko kuma yawan rarraba yanayin yanayi (MDM), wanda ke watsawa ta hanyar hanyoyin yaɗawa na zaruruwan yanayi ko na yanayi da yawa.
Tsarin fiber na Core Division Multiplexing (CDM) a ƙa'ida yana dogara ne akan amfani da manyan tsare-tsare guda biyu.
Na farko ya dogara ne akan amfani da ƙunƙun zare guda ɗaya (ƙunƙun zare), inda aka haɗa zare guda ɗaya a lokaci guda don samar da ƙunƙun zare ko ƙunƙun da za su iya samar da ɗaruruwan hanyoyin haɗin layi ɗaya.
Zabi na biyu ya dogara ne akan watsa bayanai ta hanyar amfani da core guda ɗaya (yanayi ɗaya ga kowace core) wanda aka saka a cikin fiber iri ɗaya, watau a cikin MCF multicore fiber. Ana ɗaukar kowane core a matsayin tasha ɗaya daban.
Fiber MDM (Module Division Multiplexing) yana nufin watsa bayanai akan hanyoyi daban-daban na fiber na gani, kowannensu ana iya ɗaukarsa a matsayin tashar daban.
Nau'ikan MDM guda biyu da aka fi sani sune fiber multimode (MMF) da fractional mode fiber (FMF). Babban bambanci tsakanin su biyun shine adadin yanayi (tashoshi da ake da su). Tunda MMFs na iya tallafawa adadi mai yawa na yanayi (dubban yanayi), intermodal crosstalk da differential mode group delay (DMGD) suna zama masu mahimmanci.
Akwai kuma zare mai siffar photonic crystal (PCF) wanda za a iya cewa yana cikin wannan nau'in. Ya dogara ne akan halayen lu'ulu'u na photonic, waɗanda ke iyakance haske ta hanyar tasirin bandgap kuma suna watsa shi ta amfani da ramukan iska a cikin sashin giciye. PCF galibi ana yin sa ne da kayan kamar SiO2, As2S3, da sauransu, kuma ana shigar da ramukan iska a yankin da ke kewaye da tsakiya don canza bambancin ma'aunin refractive tsakanin tsakiya da rufin.
Za a iya bayyana fiber ɗin CDM a matsayin ƙarawar ƙwayoyin zare guda ɗaya masu layi ɗaya waɗanda ke ɗauke da bayanai, waɗanda aka saka a cikin rufin iri ɗaya (mafi yawan fiber MCF ko fakitin fiber guda ɗaya). Tsarin rarraba MDM shine amfani da hanyoyi da yawa na sarari-na gani a cikin hanyar watsawa azaman tashoshin bayanai na mutum ɗaya/keɓantacce/masu zaman kansu, yawanci don watsawa mai haɗin kai na ɗan gajeren lokaci.
Lokacin Saƙo: Yuni-26-2025