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    Ulwazi olujwayelekile lwamamojula optical kanye ne-optical interfaces

    Isikhathi sokuthumela: Aug-01-2019

    Iyini i-GBIC?

    I-GBIC isifinyezo se-Giga Bitrate Interface Converter, okuwumshini wokusebenzisana wokuguqula amasiginali kagesi wegigabit abe amasignali okubona.I-GBIC ingadizayinelwa ukushintshashintsha okushisayo.I-GBIC iwumkhiqizo oguqulekayo ohlangabezana nezindinganiso zamazwe ngamazwe.I-Gigabitamaswishiyakhelwe ngesixhumi esibonakalayo se-GBIC inesabelo esikhulu semakethe emakethe ngenxa yokushintshashintsha okuvumelana nezimo.

    Yini i-SFP?

    I-SFP isifinyezo se-SMALL FORM PLUGGABLE, esingaqondakala kalula njengenguqulo ethuthukisiwe yamamojula we-GBIC.SFP awuhhafu wosayizi wamamojula we-GBIC futhi angacushwa ngenani lezimbobo ezingaphezu kokuphindwe kabili kuphaneli efanayo.Eminye imisebenzi yemojula ye-SFP ngokuyisisekelo iyafana ne-GBIC.Abanyeshintshaabakhiqizi babiza imojula ye-SFP ngokuthi i-GBIC encane (MINI-GBIC).Amamojula optical wesikhathi esizayo kufanele asekele ukuxhuma okushisayo, okusho ukuthi angaxhunywa noma anqanyulwe kumadivayisi ngaphandle kokunqanyulwa kwamandla.Ngenxa yokuthi i-optical module ixhunyiwe, abaphathi benethiwekhi bangakwazi ukuxhuma. thuthukisa futhi wandise uhlelo ngaphandle kokuvala inethiwekhi, enomthelela omncane kubasebenzisi be-inthanethi.I-Hotplug iphinde yenza lula ukugcinwa okuphelele futhi ivumela abasebenzisi bokugcina ukuthi baphathe kangcono amamojula wabo we-transceiver.Ngaso leso sikhathi, ngenxa yalokhu kusebenza kokushintshana kokushisa, imojula yenza inethiwekhi isebenze. abaphathi ukuhlela izindleko eziphelele zokudlulisela kanye nokudlulisa, amabanga okuxhumanisa, kanye nazo zonke izinhlinzeko zenethiwekhi ngokuvumelana nezidingo zokuthuthukiswa kwenethiwekhi, ngaphandle kokushintsha wonke amabhodi wesistimu.Amamojula optical asekela lokhu kuxhuma okushisayo okwamanje ane-GBIC ne-SFP, ngoba ubukhulu be-SFP ne-SFF bucishe bufane, bungakwazi ukufakwa ngokuqondile ebhodini lesifunda, eligcina isikhala nesikhathi sokupakisha, futhi linezinhlelo zokusebenza eziningi.Ngakho-ke, ukuthuthukiswa kwayo kwesikhathi esizayo kufanelekile ukulindela futhi kungase kusongela ngisho nemakethe. kwe-SFF.

    Yini i-SFF?

    I-SFF(Small Form Factor) compact optical module isebenzisa ubuchwepheshe obunembayo obusezingeni eliphezulu bokubonwayo kanye nokuhlanganiswa kwesekethe futhi iyingxenye kuphela yosayizi wemodule ejwayelekile ye-duplex SC(1X9) fiber optic transceiver.Ingakwazi kabili inani lamachweba okubona endaweni efanayo, ukhuphule ukuminyana kwembobo yolayini futhi unciphise izindleko zesistimu ngembobo ngayinye. Ngaphezu kwalokho, imojula yephakheji encane ye-SFF isebenzisa isixhumi esibonakalayo se-kt-rj esifana nenethiwekhi yocingo lwethusi, usayizi ofanayo nesixhumi esibonakalayo sentambo yethusi evamile yenethiwekhi yekhompiyutha, esiza ukuguqulwa kwezinto ezikhona zenethiwekhi esekwe kwikhebula le-copper ukuya kunethiwekhi ye-fiber optical yezinga eliphezulu ukuhlangabezana nokukhula okusheshayo kwesidingo somkhawulokudonsa wenethiwekhi.

    9

    Uhlobo lwedivayisi yokuxhumeka kwenethiwekhi

    Isixhumi esibonakalayo se-BNC

    Isixhumi esibonakalayo se-BNC sibhekisela esibonakalayo sekhebula le-coaxial. I-interface ye-BNC isetshenziselwa ukuxhumeka kwekhebula lama-euro angama-75, ukuhlinzeka ngeziteshi ezimbili zokwamukela (RX) nokuthumela (TX), futhi isetshenziselwa ukuxhuma amasignali angalingani.

    I-Optical fiber interface

    I-Fiber optic interface iwukusebenza okubonakalayo okusetshenziselwa ukuxhuma izintambo ze-fiber optic.Kuvamise ukuba ne-SC, ST, LC, FC kanye nezinye izinhlobo.Ngoxhumano lwe-10base-f, isixhumi ngokuvamile siwuhlobo lwe-ST, kanti esinye isiphetho se-FC. ixhunywe ku-fiber optic cable rack.FC isifinyezo se-FerruleConnector. Ukuqiniswa kwayo kwangaphandle umkhono wensimbi futhi ukuqiniswa kuyi-screw buckle.ST interface ngokuvamile isetshenziselwa isixhumi esibonakalayo se-10base-f.SC ngokuvamile sisetshenziselwa i-100base-fx kanye ne-GBIC.LC ivame ukusetshenziselwa i-SFP.

    I-interface ye-RJ-45

    I-interface ye-rj-45 iyisixhumi esibonakalayo se-Ethernet esisetshenziswa kakhulu.I-Rj-45 yigama elivamile lamajekhi asetshenziswayo noma amapulaki anezindawo ezingu-8 (amaphini angu-8) njengoba kuchazwe izinga lokuxhuma lamazwe ngamazwe, elimiswe yi-IEC(60)603-7.

    RS – 232 interface

    I-interface ye-Rs-232-c (ebuye yaziwe ngokuthi i-EIA rs-232-c) iyindlela esetshenziswa kakhulu yokuxhumana ye-serial. Yasungulwa ngo-1970 yinhlangano yemboni yezogesi yaseMelika (EIA) ngokubambisana nezinhlelo zensimbi, abakhiqizi bemodemu kanye nekhompyutha. abakhiqizi bamatheminali bezilinganiso zokuxhumana ze-serial.Igama layo eligcwele ”izinga lobuchwepheshe le-serial kanambambili yokushintshisana kwedatha phakathi kwemishini yedatha terminal (DTE) kanye namadivayisi zokuxhumana ngedatha (DCE)”.Izinga licacisa ukusetshenziswa kwesixhumi se-DB25 samaphini angama-25, sicacisa. okuqukethwe kwesignali yephinikhodi ngayinye yesixhumi kanye nezinga lamasignali ahlukahlukene.

    I-interface ye-RJ-11

    Isixhumi esibonakalayo se-RJ-11 yilokho esikubiza ngokuthi isixhumi esibonakalayo solayini wefoni.I-RJ-11 igama elivamile lesixhumi esakhiwe yi-Western Electric.Umumo waso uchazwa njengesixhumi samaphini angu-6.Umumo waso uchazwa njengesixhumi samaphini angu-6. .Phambilini eyayaziwa ngokuthi i-WExW, u-x lapha umele "okusebenzayo", ukuthintana noma umjovo inaliti.Isibonelo, i-WE6W inabo bonke othintana nabo abayisithupha, izinombolo 1 ukuya ku-6, isixhumi esibonakalayo se-WE4W SEBENZISA izikhonkwane ezi-4 kuphela, oxhumana nabo ababili abangaphandle kakhulu (1 kanye no-6) ungasebenzisi, i-WE2W ISEBENZISA kuphela izikhonkwane ezimbili ezimaphakathi (okungukuthi, isixhumi esibonakalayo somugqa wefoni).

    I-CWDM ne-DWDM

    Ngokukhula okusheshayo kwesevisi yedatha ye-inthanethi ye-IP, isidingo somugqa wokudlulisa umkhawulokudonsa siyakhula.Nakuba ubuchwepheshe be-DWDM(dense wavelength division multiplexing) buyindlela ephumelela kakhulu yokuxazulula ukunwetshwa komkhawulokudonsa womugqa, ubuchwepheshe be-CWDM (i-coarse wavelength division multiplexing) bunezinzuzo ngaphezu kwalokho. I-DWDM kuzindleko zesistimu, ukugcinwa kanye nezinye izici.

    I-CWDM ne-DWDM zombili ubuchwepheshe bokuhlukanisa i-wavelength multiplexing, obungakwazi ukuhlanganisa ukukhanya kwamaza ahlukene kube yifayibha ewumongo owodwa futhi iwadlulisele ndawonye.ukungakwazi kanye nezinye izici.

    Izinga lakamuva le-ITU le-CWDM ngu-g.695, elihlinzeka ngamashaneli e-wavelength angu-18 ngesikhawu esingu-20nm ukusuka ku-1271nm kuya ku-1611nm. Uma kucatshangelwa ithonya lokuphakama kwamanzi kwe-g evamile. I-fibre engu-652, iziteshi ezingu-16 zivame ukusetshenziswa.Ngenxa yesikhala esikhulu sesiteshi, izihlukanisi zamagagasi ezihlanganisiwe nama-lasers ishibhile kunamadivayisi e-DWDM.

    Izikhathi zesiteshi se-DWDM ziyi-0.4nm, 0.8nm, 1.6nm nezinye izikhawu ezihlukene njengoba kudingekile, ezincane futhi ezidinga amadivayisi engeziwe okulawula ubude begagasi. Ngakho-ke, amadivaysi asekelwe kubuchwepheshe be-DWDM abiza kakhulu kunalawo asekelwe kubuchwepheshe be-CWDM.

    I-PIN photodiode iyisendlalelo sezinto zohlobo lwe-n-doped kancane, olwaziwa ngokuthi isendlalelo se-I(Intrinsic), phakathi kohlobo lwe-p olune-doped kakhulu kanye nama-semiconductors ohlobo lwe-n.Ngenxa yokuthi i-doped kancane, ukugxila kwe-electron kuphansi kakhulu. Ngemva kokusabalalisa, ungqimba olubanzi kakhulu lokuwohloka luyakhiwa, olungathuthukisa isivinini salo sokuphendula nokusebenza kahle kokuguqulwa.I-APD iyi-photodiode enenzuzo. Uma ukuzwela kwesitholi sokubonwayo kuphakeme, i-APD iyasiza ukunweba ibanga lokudlulisela lesistimu.



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