Isidibanisi sefiber optical
Isidibanisi sefiber optic sinefiber kunye neplagi kuzo zombini iziphelo zefiber. Iplagi iqulethe i-pin kunye ne-peripheral yokuvala isakhiwo.Ngokweendlela ezahlukeneyo zokutshixa, izixhumi zefiber zingahlelwa kwi-FC uhlobo, uhlobo lwe-SC, uhlobo lwe-LC, uhlobo lwe-ST kunye nohlobo lwe-KTRJ.
Isidibanisi seFC samkela isixhobo sokutshixa intambo kwaye sisidibanisi sefayibha ebonakalayo eshukumayo eyeyona yakuqala kwaye isetyenziswa kakhulu.
I-SC luhlanganiso oluxande oluphuhliswe yi-NTT. Inokuthi ifakwe ngokuthe ngqo kwaye isuswe ngaphandle kokudibanisa intambo. Xa kuthelekiswa neFC isinxibelelanisi, inendawo encinci yokusebenza kwaye kulula ukuyisebenzisa. Iimveliso ze-Ethernet ezisezantsi zixhaphake kakhulu.
Ikhonkco ye-ST yaphuhliswa yi-AT & T kwaye isebenzisa indlela yokuvala i-bayonet.Izibonakaliso eziphambili zeparameter zilingana nezixhumi ze-FC kunye ne-SC, kodwa aziqhelekanga kwizicelo zenkampani. Zidla ngokusetyenziswa kwizixhobo zemowudi ezininzi kwaye zisetyenziswa rhoqo xa zifakwe kwizixhobo zabanye abavelisi.
Izikhonkwane ze-KTRJ zenziwe ngeplastiki kwaye zibekwe ngezikhonkwane zentsimbi. Njengoko inani lokufakwa kunye nokususwa landa, iindawo zokukhwelana zinxiba kwaye zigugile, kwaye ukuzinza kwexesha elide akulunganga njengezixhumi ze-ceramic pin.
Ulwazi lwefiber optical
I-fiber optical yi-conductor ehambisa amaza okukhanya.Ifayibha ye-Optical inokwahlulwa ibe yi-fiber yemowudi enye kunye ne-multimode fiber ukusuka kwindlela yokuhanjiswa kwe-optical.
Kwi-fiber yemowudi enye, ukuhanjiswa kokukhanya kunendlela enye kuphela esisiseko, oku kuthetha ukuba ukukhanya kuhanjiswa kuphela ecaleni kombindi wangaphakathi wefiber.Njengoko i-mode dispersion igwenywe ngokupheleleyo, i-fiber-mode-mode ine-band transmission band kwaye ifanelekile. isantya esiphezulu, umgama omde ifayibha unxibelelwano.
Kwifiber ye-multimode, kukho iindlela ezininzi zokuhanjiswa kwe-optical. Ngenxa yokusabalalisa okanye ukuchithwa, ukuhanjiswa kwe-fiber optical enjalo kubi, i-frequency band iyancipha, izinga lokuhambisa lincinci, kwaye umgama ufutshane.
Iiparamitha zeempawu zefiber optical
Ubume befiber optical yenziwe yintonga yefiber ye-quartz, kunye nobubanzi obungaphandle befiber ye-multimode kunye ne-fiber mode eyodwa yonxibelelwano zombini ziyi-125.μm.
I-slimming yahlulwe yaba ziindawo ezimbini: i-Core kunye ne-Cladding layer.I-fiber core ye-mode eyodwa inobubanzi obuyi-8 ~ 10.μm. I-multimode fiber core diameter inemigangatho emibini esemgangathweni, kwaye i-diameter engundoqo yi-62.5μm (umgangatho wase-US) kunye ne-50μm (umgangatho waseYurophu).
Inkcazo yefiber interface inenkcazo enjalo: 62.5μm/125μm multimode ifayibha, apho 62,5μm ibhekisela kwidayamitha engundoqo yefiber, kunye ne-125μm ibhekisa kwidayamitha yangaphandle yefiber.
Iintsinga zemowudi enye zisebenzisa i-wavelength ye-1310 nm okanye i-1550 nm.
Iifibers zeMultimode zisebenzisa i-wavelength ye-850 nm.
Ifiber yemowudi enye kunye nefiber yemultimode inokwahlulwa ngombala. Umzimba wangaphandle we-fiber yemodi enye utyheli, kwaye umzimba wangaphandle we-multimode fiber unobomvu orenji.
Gigabit optical port
Izibuko ze-Gigabit optical zingasebenza kuzo zombini iindlela zokunyanzeliswa kunye ne-auto-negotiated.Kwinkcazo ye-802.3, i-Gigabit optical port isekela kuphela i-1000M yesantya kwaye isekela i-duplex epheleleyo (Egcweleyo) kunye ne-half-duplex (Half) ye-duplex modes.
Owona mahluko usisiseko phakathi kokuthetha-thethana ngokuzenzekelayo kunye nokunyanzeliswa kukuba umjelo wekhowudi othunyelwe xa ezi zimbini ziseka ikhonkco lomzimba lahlukile. Imowudi yokuxoxisana ngokuzenzekelayo ithumela i-/C/ ikhowudi, eyona ndlela yoqwalaselo lwekhowudi, kunye nemowudi yokunyanzeliswa ithumela / I / ikhowudi, engumjelo ongasebenziyo.
I-Gigabit optical port self-inkqubo yothethathethwano
Okokuqala: zombini iziphelo zisetelwe kwimowudi yothethathethwano oluzenzekelayo
Amaqela amabini athumela omnye komnye/C/code stream. Ukuba ezintathu ezifanayo / C / iikhowudi zifunyenwe ngokulandelelana kwaye ikhowudi efunyenweyo ihambelana nendlela yokusebenza yesiphelo sendawo, elinye iqela libuyisela i / C / ikhowudi kunye nempendulo ye-Ack. Emva kokufumana ulwazi lwe-Ack, intanga icinga ukuba abo babini banokunxibelelana kunye kwaye babeke ichweba kwi-UP state.
Okwesibini:isiphelo esinye simiselwe kwi-auto-negotiation, enye isiphelo sibekwe kwisinyanzelo
Isiphelo sokuthethana ngokuzenzekelayo sithumela i/C/stream, kwaye isiphelo esinyanzelwayo sithumela i/I/stream. Ukuphela kokunyanzeliswa akukwazi ukunika intanga ngolwazi lokuxoxisana kwesiphelo sendawo, kwaye ayikwazi ukubuyisela impendulo ye-Ack kuontanga. Ngoko ke, i-terminal ye-auto-negotiation PHANTSI.Nangona kunjalo, isiphelo sokunyanzeliswa ngokwaso siyakwazi ukuqaphela i / C / ikhowudi, kwaye ithathele ingqalelo ukuba isiphelo sontanga lizibuko elihambelana ngokwalo, ngoko cwangcisa ngokuthe ngqo izibuko lendawo kwi-UP state.
Okwesithathu:zombini iziphelo zimiselwe kwimo enyanzelekileyo
Amaqela amabini athumelana / mna / imisinga. Emva kokufumana i/I/stream, intanga ibona ukuba intanga lizibuko elifana nentanga.
Yintoni umahluko phakathi kwe-multimode kunye ne-singlemode fiber?
I-Multimode:
Iifiber ezinokuhamba ukusuka kumakhulu ukuya kumawaka eendlela zibizwa ngokuba yi-multimode (MM) fibers.Ngokokusasazwa kwe-radial ye-refractive index kwi-core kunye ne-cladding, inokuphinda ihlulwe ibe yi-fiber ye-multimode kunye ne-multimode fiber.Phantse zonke Iintsinga ze-multimode ziyi-50/125 μm okanye i-62.5/125 μm ngobukhulu, kwaye i-bandwidth (ubungakanani bolwazi olugqithiswa yifayibha) idla ngokuba yi-200 MHz ukuya kwi-2 GHz. . I-diode ekhupha ukukhanya okanye i-laser isetyenziswa njengomthombo wokukhanya.
Imowudi enye:
I-fiber enokusasaza imodi enye ibizwa ngokuba yi-fiber mode eyodwa.I-fiber ye-fiber ye-fiber refractive index profile ifana ne-fiber yesinyathelo, ngaphandle kokuba ububanzi obuphambili buncinci kakhulu kune-multimode fiber.
Ubungakanani befiber yemowudi enye yi-9-10/125μm kwaye ine-bandwidth engapheliyo kunye neempawu ezilahlekileyo eziphantsi kune-fiber multimode.I-transceivers optical-mode eyodwa isoloko isetyenziselwa ukuhanjiswa kwexesha elide, ngamanye amaxesha ifikelela kwi-150 ukuya kwiikhilomitha ze-200. Ii-LED ezine-LD ezincinci okanye imigca ye-spectral isetyenziswa njengomthombo wokukhanya.
Umahluko kunye noqhagamshelwano:
Izixhobo ezikwimowudi enye zihlala zisebenza kuzo zombini iifiber zemowudi enye kunye neentsinga zemultimode, ngelixa izixhobo zemultimode zikhawulelwe ekusebenzeni kwimicu yemultimode.