I-fiber yemowudi enye: umbindi weglasi engundoqo ubhityile kakhulu (i-diameter engundoqo ngokuqhelekileyo yi-9 okanye i-10) μ m), inye kuphela imowudi yefiber optical inokudluliselwa.
Ukusasazwa kwe-intermodal yefiber yemowudi enye incinci kakhulu, ilungele unxibelelwano olukude, kodwa kukwakho ukusasazwa kwezinto kunye nokusasazwa kwamaza.Ngale ndlela, i-fiber yemodi enye ineemfuno eziphezulu zobubanzi be-spectral kunye nokuzinza komthombo wokukhanya, oko kukuthi, ububanzi be-spectral kufuneka bube buncinci kwaye ukuzinza kufuneka kube kuhle.
Kamva, kwafunyaniswa ukuba kwi-1.31 μ Kwi-wavelength ye-M, i-dispersion yezinto eziphathekayo kunye ne-waveguide dispersion ye-fiber ye-single-mode ilungile kwaye ingalunganga, kwaye ubungakanani bufana ncakasana.Ngoko ke, i-1.31 μ M ummandla we-wavelength uye waba yifestile yokusebenza efanelekileyo kakhulu yonxibelelwano lwefiber optical, kwaye ikwayeyona nto iphambili yokusebenza kwenkqubo yonxibelelwano lwefiber ebonakalayo 1.31μM iiparameters eziphambili zefiber eqhelekileyo yendlela enye igqitywe yi-ITU-T. kwisiphakamiso se-G652, ngoko olu hlobo lwefayibha lukwabizwa ngokuba yi-G652 fiber.
Xa kuthelekiswa nefiber yemultimode, ifayibha enemowudi enye inokuxhasa umgama omde wothumelo.Kwi-100Mbps ye-Ethernet kunye ne-1G ye-gigabit network, i-fiber ye-mode eyodwa inokuxhasa umgama wokuhambisa ngaphezu kwe-5000m.
Ukususela kumbono weendleko, kuba i-transceiver optical ibiza kakhulu, iindleko zokusebenzisa i-fiber optical mode enye iya kuba phezulu kune-multi-mode optical fiber cable.
Isalathiso sosasazo lwerefractive sifana nefiber eguquguqukayo, kwaye i-core diameter yi-8 ~ 10 μ m kuphela.Ukukhanya kusasazeka kwi-axis esembindini ye-fiber core kwimilo yomgca.Ngenxa yokuba olu hlobo lwefayibha lunokuhambisa imo enye kuphela (ukuwohloka kwamazwe amabini e-polarization), ibizwa ngokuba yifayibha yemowudi enye, kwaye ukuphambuka kwayo kuncinci kakhulu.
Inkcazo ye "fiber optical mode" kwiincwadi zemfundo: ngokuqhelekileyo, xa i-V ingaphantsi kwe-2.405, i-wave wave crest idlula kwi-fiber optical, ngoko ibizwa ngokuba yi-fiber optical mode.Ingundoqo yayo incinci kakhulu, malunga ne-8-10 microns, kwaye i-mode dispersion incinci kakhulu.Into ephambili echaphazela ububanzi bebhendi yokuhanjiswa kwefiber optical yi-dispersion eyahlukeneyo, kwaye imowudi ye-dispersion yeyona ibaluleke kakhulu, kwaye ukusasazwa kwe-fiber optical ye-single-mode kuncinci, ngoko ke ukukhanya kunokudluliselwa kumgama omde kwi-frequency ebanzi. iqela.
I-fiber ye-optical ye-mode enye ine-core diameter ye-microns eyi-10, enokuvumela ukuhanjiswa kwe-mode-mode enye kunye nokunciphisa imida ye-bandwidth kunye ne-modal dispersion.Nangona kunjalo, ngenxa yobukhulu obuncinci be-fiber optical mode, kunzima ukulawula ukuhanjiswa kwe-beam, ngoko ke ifuna i-laser ebiza kakhulu njengomthombo wokukhanya, kwaye umda ophambili we-fiber optical yemowudi enye ilele kukusasazwa kwezinto, enye. Intambo ye-optical mode isebenzisa ikakhulu i-laser ukufumana i-bandwidth ephezulu.Ngenxa yokuba i-LED iya kukhupha inani elikhulu lemithombo yokukhanya kunye ne-bandwidth eyahlukeneyo, imfuno yokusabalalisa izinto ibaluleke kakhulu.
Xa kuthelekiswa nefiber yemultimode, ifayibha enemowudi enye inokuxhasa umgama omde wothumelo.Kwi-100Mbps ye-Ethernet kunye ne-1G ye-gigabit network, i-fiber ye-mode eyodwa inokuxhasa umgama wokuhambisa ngaphezu kwe-5000m.
Ukususela kumbono weendleko, ekubeni i-transceiver optical ibiza kakhulu, iindleko zokusebenzisa i-fiber optical mode enye iya kuba phezulu kune-multi-mode optical fiber cable.
Ifayibha yemowudi enye (SMF)
Xa kuthelekiswa nefiber yemultimode, i-diameter engundoqo yefiber yemowudi enye ibhityile kakhulu, kuphela i-8 ~ 10 μ m. Kuba imowudi enye kuphela isasazwa, akukho ndlela yokusasazwa kwe-inter, i-dispersion encinci iyonke kunye ne-bandwidth ebanzi.I-fiber yemowudi enye isetyenziswe kwi-1.3 ~ 1.6 μ Kummandla we-wavelength ye-M, ngoyilo olufanelekileyo lwe-refractive index distribution ye-fiber optical kunye nokukhethwa kwezinto ezicocekileyo zokucoca ukulungisa i-cladding 7 amaxesha amakhulu kunombindi, ilahleko encinci kunye nokusasazeka okuncinci kunokufezekiswa ngexesha elifanayo kweli candelo.
I-fiber ye-optical mode enye isetyenziswa kumgama omde kunye nenkqubo yonxibelelwano yefiber ephezulu, i-fiber optical inethiwekhi yendawo kunye nezinzwa ezahlukeneyo zefiber optical.
Ixesha lokuposa: Mar-08-2022