1.1 Imojula yokusebenza eyisisekelo
Ii-fiber opticali-transceiver ihlanganisa amamojula amathathu ayisisekelo asebenzayo: i-chip ye-photoelectric media conversion chip, isikhombimsebenzisi sesignali ye-optical (imoduli ehlanganisiwe ye-transceiver) kanye nesixhumi esibonakalayo sikagesi (RJ45).Uma ifakwe imisebenzi yokuphatha inethiwekhi, ihlanganisa neyunithi yokucubungula ulwazi lokuphathwa kwenethiwekhi.
i-fiber optic transceiver iyiyunithi yokuguqula imidiya ye-Ethernet eshintshanisa amasignali kagesi asontekile amabanga amade kanye namasignali okubona amabanga amade.Ibizwa nangokuthi i-photoelectric converter (I-Fiber Converter) ezindaweni eziningi.Umkhiqizo uvame ukusetshenziswa endaweni yangempela yenethiwekhi lapho ikhebula le-Ethernet lingakwazi ukumboza futhii-fiber opticalkufanele isetshenziselwe ukunweba ibanga lokudlulisa, futhi ivamise ukubekwa endaweni yokufinyelela kuhlelo lwenethiwekhi yendawo yedolobha elikhulu;ngesikhathi esifanayo, kuyasiza ukuxhuma imayela lokugcina lei-fiber opticalulayini oya endaweni yedolobha elikhulu I-inthanethi kanye nenethiwekhi yangaphandle nakho kudlale indima enkulu.
Kwamanye amabhizinisi amakhulu, i-optical fibre isetshenziswa njengendawo yokudlulisa ukuze kusungulwe inethiwekhi yomgogodla ngesikhathi sokwakhiwa kwenethiwekhi, kanti indawo yokudlulisela ye-LAN yangaphakathi ngokuvamile intambo yethusi.Ungakubona kanjani ukuxhumana phakathi kwe-LAN ne-i-fiber opticalinethiwekhi yomgogodla?Lokhu kudinga ukuguqulwa phakathi kwezimbobo ezihlukene, imigqa ehlukene, nemicu ehlukahlukene yokubona futhi kuqinisekisa ikhwalithi yesixhumanisi.Ukuvela kwama-transceivers e-fiber optical kuguqula amasignali kagesi kanye ne-optical of the pair esontekile komunye nomunye, ukuqinisekisa ukudluliswa okubushelelezi kwamaphakethe wedatha phakathi kwamanethiwekhi amabili, futhi ngesikhathi esifanayo, kwandisa umkhawulo webanga lokudlulisela lenethiwekhi kusuka kumamitha ayi-100. yezintambo zethusi ukuya ngaphezu kwamakhilomitha ayi-100 (i-fiber yemodi eyodwa).
1.2 Izici eziyisisekelo zama-fiber optic transceivers
1. Obala ngokugcwele kuphrothokholi yenethiwekhi.
2. Nikeza ngokudluliswa kwedatha yokubambezeleka okuphansi kakhulu.
3. Sekela izinga lokushisa elibanzi kakhulu lokusebenza.
4. Sebenzisa i-chip ye-ASIC ezinikele ukuze ubone ukudluliselwa kwesivinini somugqa wedatha.I-Programmable ASIC igxilisa imisebenzi eminingi ku-chip eyodwa, futhi inezinzuzo zokuklama okulula, ukwethembeka okuphezulu, kanye nokusetshenziswa kwamandla okuphansi, okungenza imishini ikwazi ukuthola ukusebenza okuphezulu kanye nezindleko eziphansi.
5. Imishini yokuphatha inethiwekhi ingahlinzeka ngokuxilongwa kwenethiwekhi, ukuthuthukiswa, umbiko wesimo, umbiko wesimo esingavamile kanye nemisebenzi yokulawula, futhi ingahlinzeka ngohlelo lokusebenza oluphelele kanye nelogi ye-alamu.
6. Imishini yohlobo lwe-rack inganikeza umsebenzi oshintshwayo oshisayo ukuze ulungiswe kalula kanye nokuthuthukiswa okungaphazanyiswa.
7. Sekela ibanga eliphelele lokudlulisela (0～120km).
8. Izinto eziningi ezisetshenziswayo zisebenzisa idizayini yokuphakelwa kukagesi engu-1+1, isekela i-ultra-wide power supply voltage, futhi ibona ukuvikelwa kokunikezwa kwamandla kanye nokushintsha okuzenzakalelayo.
1.3Ukuhlukaniswa kwe-fiber optic transceivers
Kunezinhlobo eziningi ze-fiber optic transceivers, futhi izinhlobo zazo zishintsha ngokufanele ngokuvumelana nezindlela ezihlukene zokuhlukanisa.
Ngokwemvelo yefiber, ingahlukaniswa ibe yi-multi-mode fiber transceiver kanye ne-single-mode fiber transceiver.Ngenxa yezintambo ezihlukahlukene ezisetshenziswayo, ibanga lokudlulisela le-transceiver lihlukile.Ibanga elijwayelekile lokudluliswa kwama-transceiver ezinhlobo eziningi liphakathi kwamakhilomitha angu-2 namakhilomitha angu-5, kuyilapho ukumbozwa kwama-transceiver emodi eyodwa kungasukela kumakhilomitha angu-20 kuya kumakhilomitha angu-120;
Ngokusho kwe-fiber optical edingekayo, ingahlukaniswa ibe yi-fiber optical fiber transceiver eyodwa: idatha ethunyelwe futhi eyamukelwe idluliselwa ku-fiber eyodwa optical;i-dual-fiber optical fiber transceiver: idatha eyamukelwe futhi yathunyelwa idluliselwa ngepheya lemicu yokubona.
Ngokwezinga lokusebenza / izinga, lingahlukaniswa libe yi-10M eyodwa, i-100M fiber optic transceivers, i-10/100M i-fiber optic transceivers eguquguqukayo kanye ne-1000M fiber optic transceivers.Ngokusho kwesakhiwo, ingahlukaniswa ibe ideskithophu (i-stand-yodwa) i-fiber optic transceivers kanye nama-transceivers optic optic afakwe kwi-rack.I-transceiver yefiber optical yedeskithophu ifanele umsebenzisi oyedwa, njengokuhlangana nokuxhuma phezulu kweswishi eyodwa ephaseji.Ama-transceivers e-fiber optic afakwe kwi-rack (modular) afanele ukuhlanganisa abasebenzisi abaningi.Isibonelo, igumbi lekhompiyutha elimaphakathi lomphakathi kufanele lihlangabezane nokuxhumanisa phezulu kwawo wonke amaswishi emphakathini.
z ngokuya kokuphathwa kwenethiwekhi, ingahlukaniswa ngohlobo lokuphathwa kwenethiwekhi i-optical fibre transceiver kanye nohlobo lokuphathwa kwe-non-network optical fiber transceiver.
Ngokusho kohlobo lokuphatha, ingahlukaniswa ngama-non-network ukuphathwa kwe-Ethernet fiber optic transceivers: ipulaki futhi udlale, setha imodi yokusebenza yembobo kagesi ngokusebenzisa inkinobho yokudayela yehadiwe.Uhlobo lokuphathwa kwenethiwekhi i-Ethernet fiber optic transceiver: ukwesekwa kokuphathwa kwenethiwekhi yenkampani yenethiwekhi
Ngokusho kohlobo lwamandla kagesi, ingahlukaniswa ngama-transceivers optic optic eyakhelwe ngaphakathi: ukunikezwa kwamandla okushintshwa okwakhiwe ngaphakathi yizinto zamandla ze-carrier-grade;ama-transceiver angaphandle we-fiber optic: amandla kagesi angaphandle asetshenziswa kakhulu emishinini yabantu.Inzuzo yangaphambili ukuthi ingakwazi ukusekela i-ultra-wide power supply voltage, ibone kangcono ukuqina kwamandla kagesi, ukuhlunga nokuvikela amandla emishini, futhi inciphise amaphuzu okuhluleka kwangaphandle okubangelwa ukuthintana kwemishini;inzuzo yokugcina ukuthi imishini incane ngosayizi futhi ishibhile.
Ihlukaniswe imodi yokusebenza, imodi ye-duplex egcwele (i-duplex egcwele) isho ukuthi lapho ukuthunyelwa nokwamukelwa kwedatha kuhlukaniswa imigqa yokudlulisela emibili ehlukene, zombili izinhlangothi ekuxhumaneni zingathumela futhi zamukele ngesikhathi esisodwa.Lolu hlobo lokudlulisa Imodi igcwele i-duplex, futhi imodi ye-duplex egcwele ayidingi ukushintsha isiqondiso, ngakho-ke akukho ukubambezeleka kwesikhathi okubangelwa ukusebenza kokushintsha;
I-half duplex isho ukusetshenziswa kolayini wokudlulisela ofanayo kukho kokubili ukwamukela nokuthumela.Nakuba idatha ingadluliswa ngezindlela ezimbili, zombili izinhlangothi kwezokuxhumana azikwazi ukuthumela nokwamukela idatha ngesikhathi esisodwa.Le ndlela yokudlulisela i-half-duplex.
Lapho imodi ye-half-duplex yamukelwa, isidlulisi nomamukeli ekugcineni ngakunye kohlelo lwezokuxhumana zidluliselwa entanjeni yokuxhumana ngokusebenzisa iswishi eyamukelayo/ethumelayo ukushintsha indlela.Ngakho-ke, ukubambezeleka kwesikhathi kuzokwenzeka.