1.1 Imodyuli yomsebenzi osisiseko
Ii-fiber opticali-transceiver ibandakanya iimodyuli ezintathu ezisisiseko ezisebenzayo: i-chip ye-photoelectric media conversion, i-interface ye-optical signal (imodyuli edibeneyo ye-transceiver edibeneyo) kunye ne-interface yesignali yombane (RJ45). Ukuba ixhotyiswe ngemisebenzi yolawulo lwenethiwekhi, ikwabandakanya iyunithi yokucwangcisa ulwazi lolawulo lwenethiwekhi.
i-fiber optic transceiver yiyunithi yokuguqula imidiya ye-Ethernet etshintshisa umgama omfutshane ojijekileyo wemiqondiso yombane kunye nemiqondiso yokubona ekude. Ikwabizwa ngokuba yi-photoelectric converter (iFiber Converter) kwiindawo ezininzi. Imveliso isetyenziswa ngokubanzi kwindawo yothungelwano yokwenyani apho intambo ye-Ethernet ayinakugquma kwayei-fiber opticalkufuneka isetyenziswe ukwandisa umgama wothumelo, kwaye idla ngokubekwa kwindawo yokufikelela kwisicelo sothungelwano lwendawo yemetropolitan ebanzi; kwangaxeshanye, kunceda ukudibanisa imayile yokugqibela yei-fiber opticalumgca ukuya kummandla wemetropolitan I-Intanethi kunye nothungelwano lwangaphandle nazo zidlale indima enkulu.
Kwamanye amashishini amakhulu, i-fiber optical isetyenziswa njengendawo yokuhambisa ukuseka i-backbone network ngexesha lokwakhiwa kwenethiwekhi, ngelixa i-transmission medium ye-LAN yangaphakathi ngokubanzi i-copper wire. Uluqonda njani unxibelelwano phakathi kwe-LAN kunye nei-fiber opticalinethiwekhi yomqolo? Oku kufuna ukuguqulwa phakathi kwamazibuko ahlukeneyo, imigca eyahlukeneyo, kunye nemicu eyahlukeneyo ye-optical kwaye iqinisekisa umgangatho wekhonkco. Ukuvela kwee-transceivers ze-fiber optical ziguqula izibonakaliso zombane kunye ne-optical zesibini esijijekileyo ukuya komnye nomnye, ukuqinisekisa ukuhanjiswa okugudileyo kweepakethi zedatha phakathi kweenethiwekhi ezimbini, kwaye kwangaxeshanye, kwandisa umda wokuhambisa umgama wothungelwano ukusuka kwiimitha ezili-100. iingcingo zobhedu ukuya ngaphezu kweekhilomitha ezili-100 (ifiber yemowudi enye).
1.2 Iimpawu eziphambili ze-fiber optic transceivers
1. Ngokucacileyo ngokupheleleyo kwiprotocol yenethiwekhi.
2. Ukubonelela ngokuhanjiswa kwedatha ye-ultra-low latency.
3. Ukuxhasa uluhlu lweqondo lokushisa olubanzi kakhulu.
4. Sebenzisa i-ASIC chip ezinikeleyo ukuqonda ukuhanjiswa kwedatha ngesantya esiphezulu. I-ASIC eCwangcisiweyo igxininisa imisebenzi emininzi kwi-chip enye, kwaye ineenzuzo zoyilo olulula, ukuthembeka okuphezulu, kunye nokusetyenziswa kwamandla aphantsi, okunokwenza ukuba izixhobo zifumane ukusebenza okuphezulu kunye neendleko eziphantsi.
5. Isixhobo solawulo lwenethiwekhi sinokubonelela ngokuxilongwa kwenethiwekhi, ukuphuculwa, ingxelo yesimo, ingxelo yemeko engaqhelekanga kunye nemisebenzi yokulawula, kwaye inokubonelela ngelog yokusebenza epheleleyo kunye ne-alarm log.
6. Izixhobo ze-Rack-type zinokubonelela ngomsebenzi oshushu-oguqulwayo ukuze kube lula ukugcinwa kunye nokuphuculwa okungaphazamisekiyo.
7. Ukuxhasa umgama opheleleyo wothumelo (0～120km).
8. Uninzi lwezixhobo zisebenzisa i-1 + 1 yoyilo lonikezelo lwamandla, ixhasa i-voltage ye-ultra-wide yonikezelo lwamandla, kwaye iqonda ukukhuselwa kombane kunye nokutshintsha ngokuzenzekelayo.
1.3Ulwahlulo lwe-fiber optic transceivers
Kukho iintlobo ezininzi ze-fiber optic transceivers, kwaye iintlobo zazo zitshintsha ngokufanelekileyo ngokweendlela ezahlukeneyo zokuhlela.
Ngokobume befiber, inokwahlulwa ibe yi-multi-mode fiber transceiver kunye ne-fiber-mode-fiber transceiver. Ngenxa yeendlela ezahlukeneyo ze-optical fibers ezisetyenzisiweyo, umgama wokuhanjiswa kwe-transceiver uhlukile. Umgama wothumelo jikelele we-multi-mode transceivers uphakathi kweekhilomitha ezi-2 kunye neekhilomitha ezi-5, ngelixa ukugubungelwa kwee-transceivers ze-single-mode kunokusukela kwiikhilomitha ezingama-20 ukuya kwi-120 yeekhilomitha;
Ngokutsho kwe-fiber optical efunekayo, inokwahlulwa ibe yi-fiber optical fiber transceiver enye: idatha ethunyelwe kwaye ifunyenwe ihanjiswa kwi-fiber optical fiber; i-transceiver ye-fiber optical fiber ezimbini: idatha efunyenweyo kwaye ithunyelwe idluliswa kwi-pair of optical fibers.
Ngokwezinga lokusebenza / izinga, linokwahlulwa libe yi-10M enye, i-100M i-fiber optic transceivers, i-10/100M i-fiber optic transceivers eguqukayo kunye ne-1000M i-fiber optic transceivers. Ngokwesakhiwo, inokwahlulwa kwi-desktop (i-stand-alone) i-fiber optic transceivers kunye ne-rack-mounted fiber optic transceivers. I-desktop optical fibre transceiver ifanelekile kumsebenzisi omnye, njengokuhlangana ne-uplink yokutshintsha okukodwa kwipaseji. I-Rack-mounted (modular) i-fiber optic transceivers ifanelekile ukuhlanganiswa kwabasebenzisi abaninzi. Umzekelo, igumbi lekhompyuter elisembindini loluntu kufuneka lihlangabezane ne-uplink yazo zonke iiswitshi eluntwini.
I-z ngokuhambelana nolawulo lwenethiwekhi, inokwahlulwa ibe yi-network management type transceiver optical fiber kunye ne-non-network management type transceiver optical fiber.
Ngokohlobo lolawulo, lunokwahlulwa lube yi-non-network management Ethernet fiber optic transceivers: iplagi kunye nokudlala, setha indlela yokusebenza ye-port yombane ngokusebenzisa i-hardware dial switch. Uhlobo lolawulo lwenethiwekhi I-Ethernet fiber optic transceiver: inkxaso ye-carrier-grade network management
Ngokohlobo lonikezelo lwamandla, lunokwahlulwa lube ngama-transceivers e-fiber optic eyakhelwe-ngaphakathi: ukuhanjiswa kwamandla okwakhelwe ngaphakathi kukubonelela ngombane webakala lokuthwala; I-transceivers yangaphandle ye-fiber optic yamandla: izixhobo zangaphandle ze-transformer zangaphandle zisetyenziswa kakhulu kwizixhobo zasekuhlaleni. Inzuzo yangaphambili kukuba inokuxhasa amandla ombane abanzi kakhulu, iqonde ngcono ukuzinziswa kwamandla ombane, ukuhluza kunye nokhuseleko lwamandla ezixhobo, kunye nokunciphisa iintsilelo zangaphandle ezibangelwa kukunxibelelana koomatshini; inzuzo yokugqibela kukuba izixhobo zincinci ngobukhulu kwaye zitshiphu.
Ukwahlulwe yimodi yokusebenza, imowudi ye-duplex epheleleyo (i-duplex epheleleyo) ithetha ukuba xa ukuthunyelwa kunye nokwamkelwa kwedatha kwahlulwe ngemigca emibini eyahlukeneyo yothumelo, omabini amaqela kunxibelelwano angathumela kwaye afumane ngexesha elinye. Olu hlobo lokuhambisa Imowudi igcwele-i-duplex, kwaye imowudi ye-duplex epheleleyo ayifuni ukutshintsha isalathiso, ngoko akukho kulibaziseka kwexesha elibangelwa ngumsebenzi wokutshintsha;
Isiqingatha se-duplex sibhekisa kusetyenziso lomgca wothumelo ofanayo ekufumaneni nasekuthumeleni. Nangona idatha ingadluliselwa kumacala amabini, amaqela omabini kunxibelelwano akakwazi ukuthumela nokufumana idatha ngexesha elinye. Le ndlela yokudlulisela ihafu-duplex.
Xa imowudi ye-half-duplex yamkelwa, i-transmitter kunye ne-receiver ekupheleni kwenkqubo yonxibelelwano idluliselwe kumgca wonxibelelwano ngokufumana / ukuthumela iswitshi ukutshintsha isalathiso. Ngoko ke, ukulibaziseka kwexesha kuya kwenzeka.