Mun san cewa tun daga 1990s, WDM ana amfani da fasahar multixing rabo mai tsawo don hanyoyin haɗin fiber na gani mai nisa wanda ya kai ɗaruruwa ko ma dubban kilomita. Ga yawancin ƙasashe da yankuna, kayan aikin fiber optic shine mafi tsadar kadararsu, yayin da farashin kayan aikin transceiver yayi ƙasa da ƙasa.
Koyaya, tare da haɓakar haɓakar ƙimar watsa bayanan cibiyar sadarwa kamar 5G, fasahar WDM ta ƙara zama mai mahimmanci a cikin gajerun hanyoyin haɗin gwiwa, kuma ƙarar tura gajerun hanyoyin haɗin gwiwa ya fi girma, yana sa farashi da girman abubuwan transceiver ya fi hankali.
A halin yanzu, waɗannan cibiyoyin sadarwa har yanzu suna dogara ga dubunnan filaye na gani guda ɗaya don watsa layi ɗaya ta hanyar tashoshi masu rarraba sararin samaniya, kuma adadin bayanan kowane tashoshi yana da ɗan ƙaranci, aƙalla kaɗan kaɗan Gbit/s (800G). T-level yana iya samun ƙayyadaddun aikace-aikace.
Amma a nan gaba mai zuwa, manufar daidaitawar sararin samaniya ba da jimawa ba za ta kai ga iyakar girmanta, kuma dole ne a ƙara ta ta hanyar daidaita magudanan bayanai a cikin kowane fiber don ci gaba da inganta ƙimar bayanai. Wannan na iya buɗe sabon sararin aikace-aikacen don fasaha mai yawa na rarrabuwar raƙuman raƙuman ruwa, inda mafi girman girman lambar tashar da ƙimar bayanai ke da mahimmanci.
A wannan yanayin, mitar comb janareta (FCG), azaman ƙarami kuma kafaffen tushen haske mai tsayi da yawa, na iya samar da adadi mai yawa na ingantattun masu ɗaukar hoto, don haka suna taka muhimmiyar rawa. Bugu da kari, wani muhimmin fa'ida ta musamman na tsefewar mitar gani shine cewa layin tsefe suna da daidaito daidai gwargwado a mitar, wanda zai iya shakata da buƙatun maƙallan masu gadin tashoshi kuma su guji sarrafa mitar da ake buƙata don layi ɗaya a cikin tsarin gargajiya ta amfani da DFB Laser arrays.
Ya kamata a lura cewa waɗannan fa'idodin ba kawai suna amfani da mai watsawa na rarraba juzu'i ba, har ma ga mai karɓar sa, inda za a iya maye gurbin tsararrun oscillator na gida (LO) da janareta guda ɗaya. Yin amfani da janareta na LO comb na iya ƙara sauƙaƙe sarrafa siginar dijital a cikin tashoshi masu yawa na raƙuman raƙuman raƙuman ruwa, don haka rage rikitaccen mai karɓa da haɓaka juriyar hayaniyar lokaci.
Bugu da kari, ta amfani da siginonin LO tsefe tare da aiki-kulle aiki don daidaitaccen liyafar daidaitaccen liyafar na iya ma sake gina tsarin lokaci-yanki na duk siginar yawan raƙuman raƙuman raƙuman raƙuman raƙuman ruwa, ta haka ne ramawa ga lalacewar da rashin daidaituwar fiber na watsawa ya haifar. Baya ga fa'idodin ra'ayi dangane da watsa siginar tsefe, ƙarami mai girma da ingantaccen samarwa ga tattalin arziƙi suma maɓallai ne don haɓaka rabe-raben tsaunuka masu yawa na gaba.
Don haka, a tsakanin dabarun janareta na sigina daban-daban, na'urorin matakin guntu sun shahara musamman. Lokacin da aka haɗe su da da'irorin haɗaɗɗun ma'auni na photonic don daidaita siginar bayanai, multixing, routing, da liyafar, irin waɗannan na'urori na iya zama maɓalli ga ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙaƙƙarfan rabe-raben rabe-rabe masu yawa waɗanda za a iya kera su da yawa a farashi mai rahusa, tare da ƙarfin watsa dubun. Tbit/s da fiber.
A fitarwa na ƙarshen aikawa, kowane tashoshi yana sake haɗuwa ta hanyar multixer (MUX), kuma ana watsa siginar yawan raƙuman raƙuman raƙuman raƙuman ruwa ta hanyar fiber-mode-mode. A ƙarshen karɓa, mai karɓar maɓalli mai yawa (WDM Rx) yana amfani da oscillator na gida na LO na FCG na biyu don gano tsangwama da yawa. An raba tashar tashar siginar yawan raƙuman raƙuman raƙuman shigarwa ta hanyar demultiplexer sannan a aika zuwa tsararrun mai karɓa (Coh. Rx). Daga cikin su, ana amfani da mitar demultiplexing na gida oscillator LO azaman ma'anar lokaci don kowane mai karɓa mai daidaituwa. Ayyukan wannan mahaɗin maɓalli na tsawon tsayin rabe-rabe a fili ya dogara ne akan ainihin janareta na siginar tsefe, musamman faɗin hasken da ƙarfin gani na kowane layin tsefe.
Tabbas, fasahar tsefe ta mitar gani har yanzu tana kan mataki na ci gaba, kuma yanayin aikace-aikacenta da girman kasuwa ba su da yawa. Idan zai iya shawo kan kunkuntar fasaha, rage farashi, da inganta dogaro, zai iya cimma aikace-aikacen matakin matakin a cikin watsa gani.
Lokacin aikawa: Dec-19-2024