Optical module ndiye chida chofunikira kwambiri cha hardware kuti muzindikire kulumikizidwa kwa netiweki mu data center.Ndi kuwonjezeka kwa chiwerengero cha doko ndi kachulukidwe, mtengo wa optical module udzawerengera pafupifupi theka la mtengo wa optical network mu data center.Pakali pano, teknoloji yogwirizanitsa 100G yakhala ikugwiritsidwa ntchito kwambiri m'malo opangira deta atsopano a makampani akuluakulu a intaneti, ndi teknoloji yogwirizanitsa 400G idzagwiritsidwa ntchito kwambiri m'zaka zotsatira za 1-2. Choncho, teknoloji yogwiritsira ntchito 400G optical module yakhala cholinga cha makampani.
Pankhani ya kutalika kwa mafunde a kuwala, 400G kuwala kwa module kungagawidwe mu multi-mode (MM) ndi single-mode (SM) .Potengera njira yosinthira chizindikiro, ikhoza kugawidwa mu NRZ ndi PAM4 modulation (PAM4 ndiyo yaikulu). pakali pano) . Ponena za mtunda wotumizira, 400G optical module ikhoza kugawidwa mu SR, DR, FR ndi LR.Kuchokera pa mawonekedwe a phukusi, 400G optical module ikhoza kugawidwa mu CDFP, CFP8, OSFP, qsfp-dd ndi zina zotero.Pansipa pali gulu laukadaulo la 400G Optical module.
Yoyamba ya 400G optical module idagwiritsa ntchito 16-channel 25Gbps NRZ kukhazikitsa (monga 400g-sr16), pogwiritsa ntchito CDFP kapena CFP8 phukusi.Ubwino wa NRZ ndikuti ukhoza kubwerekedwa kuchokera ku teknoloji yokhwima ya 25G NRZ pa 100G optical module, koma choyipa ndichakuti chimafunikira njira za 16 zotumizirana mafananidwe, kugwiritsa ntchito mphamvu yayikulu komanso voliyumu, zomwe sizoyenera kugwiritsa ntchito data center.
Mu gawo lamakono la 400G Optical module, 8-channel 53GbpsPAM4 (400g-sr8,FR8,LR8) kapena 4-channel 106GbpsPAM4 (400g-dr4,FR4,LR4) amagwiritsidwa ntchito makamaka kukwaniritsa 400G kufalitsa chizindikiro, ndi mbali ya 8. -channel 53GbpsPAM4 chizindikiro chamagetsi chimagwiritsidwa ntchito kumbali ya doko lamagetsi, kutengera mawonekedwe a phukusi a OSFP kapena qsfp-dd.Maphukusi onse a OSFP ndi QSFP-DD amapereka 8 - njira zamagetsi zamagetsi zolumikizira.Poyerekeza, kukula kwa phukusi la qsfp-dd ndi laling'ono (lofanana ndi phukusi lachikhalidwe la 100G optical module QSFP28), lomwe liri loyenera kwambiri pa ntchito za data center.Kukula kwa phukusi la OSFP ndikokulirapo pang'ono, chifukwa kumatha kukupatsani mphamvu zambiri, motero ndikoyenera kugwiritsa ntchito matelefoni.
Chithunzi chotsatira chikuwonetsa kukhazikitsidwa kwa 400g-fr8 /LR8 ndi 400g-fr4 motsatana.
(Chidziwitso:Kufotokozera kwa OSFMSA kwa OSFP OCTAL SMALLFORM FACTOR PLUGGABLE MODULE.）Zitha kuwoneka kuti mbali ya mawonekedwe ndi 8-channel 53Gbps PAM4 chizindikiro.Kwa 400g-sr8 /FR8/LR8 ndi ma module ena,
CDR (kubwezeretsa koloko) ndi kutembenuka kwa magetsi / kuwala kapena kuwala / magetsi kumangochitika mkati mwa gawo la kuwala.Choncho, mbali ya doko la kuwala ndi chizindikiro cha 8-channel 53Gbps PAM4, monga momwe muyeso wa doko lamagetsi.Kwa 400g-dr4 / FR4 / LR4 ndi ma modules ena, pali tchipisi ta Gearbox mkati mwa module ya kuwala yomwe imachulukitsa zolowera ziwirizi. madoko kukhala chizindikiro chimodzi ndikuchisintha kuti chikhale chowunikira, kotero liwiro la mbali ya doko lowoneka bwino limawirikiza kawiri mbali ya doko, lomwe ndi chizindikiro cha 106GbpsPAM4.
