Ubwa mbere, ubumenyi bwibanze bwa optique module
1.Ibisobanuro:
Module nziza: ni, optique ya transceiver module.
2.Imiterere:
Moderi ya optique ya transceiver igizwe nibikoresho bya optoelectronic, umuzunguruko ukora hamwe ninteruro ya optique, kandi igikoresho cya optoelectronic kirimo ibice bibiri: kohereza no kwakira.
Igice cyohereza ni: ikimenyetso cyamashanyarazi cyinjiza igipimo runaka kode itunganywa na chip yo gutwara imbere kugirango itware lazeri ya semiconductor (LD) cyangwa urumuri rusohora diode (LED) kugirango rusohoze ibimenyetso byerekana urumuri rwahinduwe, hamwe na optique imbaraga zikoresha kugenzura izunguruka zitangwa imbere muriyo. Ibisohoka optique yerekana ibimenyetso biguma bihamye.
Igice cyakira ni: optique yerekana ibimenyetso byinjiza module yikigero runaka cyahinduwe mubimenyetso byamashanyarazi na diode ifotora. Nyuma ya preamplifier, ibimenyetso byamashanyarazi byerekana igipimo cya code ijyanye nibisohoka, kandi ibimenyetso bisohoka ni urwego rwa PECL. Mugihe kimwe, ikimenyetso cyo gutabaza gisohoka nyuma yo kwinjiza optique imbaraga ziri munsi yagaciro runaka.
3.ibipimo nibisobanuro bya module optique
Module nziza ifite ibintu byinshi byingenzi bya optoelectronic tekinike. Ariko, kubintu bibiri bishyushye-byahinduwe optique, GBIC na SFP, ibipimo bitatu bikurikira bikurikira bireba cyane muguhitamo:
(1) Uburebure bwikigo
Muri nanometero (nm), kuri ubu hari ubwoko butatu bwingenzi:
850nm (MM, multimode, igiciro gito ariko intera yohereza, muri rusange 500M); 1310nm (SM, uburyo bumwe, igihombo kinini mugihe cyo kohereza ariko gutatanya bito, mubisanzwe bikoreshwa mugukwirakwiza muri 40KM);
1550nm (SM, uburyo bumwe, igihombo gito mugihe cyo kohereza ariko gutatanya kwinshi, mubisanzwe bikoreshwa mugukwirakwiza intera ndende hejuru ya 40KM, kandi birashobora kohereza 120KM itabigenewe);
(2) Igipimo cyo kohereza
Umubare wa bits (bits) yamakuru yatanzwe kumasegonda, muri bps.
Hano hari ubwoko bune bukunze gukoreshwa: 155 Mbps, 1.25 Gbps, 2.5 Gbps, 10 Gbps, nibindi nkibyo. Igipimo cyo kohereza muri rusange kirahuza inyuma. Kubwibyo, 155M optique module nayo yitwa FE (100 Mbps) optique, naho 1.25G optique nayo yitwa GE optique ya GE (Gigabit).
Nuburyo bukoreshwa cyane mubikoresho byohereza optique. Mubyongeyeho, igipimo cyayo cyohereza muri sisitemu yo kubika fibre (SAN) ni 2Gbps, 4Gbps na 8Gbps.
(3) Intera yoherejwe
Ikimenyetso cya optique ntigikenewe koherezwa intera ishobora kwanduzwa mu buryo butaziguye, mu birometero (nanone bita kilometero, km). Module optique muri rusange ifite ibisobanuro bikurikira: multimode 550m, uburyo bumwe 15km, 40km, 80km, na 120km, nibindi.