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I-Fiber yemodi enye (i-SMF): Ukukwazi okuPhezulu kunye nobungqina obungcono bexesha elizayo

Njengoko sonke sisazi, i-multimode ifayibha idla ngokuhlulwa ibe yi-OM1, OM2, OM3 kunye ne-OM4. Ke kuthekani ngefiber yemowudi enye? Ngapha koko, iintlobo zefiber yemowudi enye zibonakala zintsonkothile kakhulu kunefiber yemultimode. Kukho imithombo emibini ephambili yokucaciswa kwe-fiber optical mode enye. Enye i-ITU-T G.65x series, kwaye enye yi-IEC 60793-2-50 (epapashwe njenge-BS EN 60793-2-50). Kunokuba ubhekisele kuzo zombini isigama se-ITU-T kunye ne-IEC, ndiza kubambelela kwi-ITU-T G.65x elula ngakumbi kweli nqaku. Kukho i-19 eyahlukileyo yendlela enye ye-fiber optical inkcazo echazwe yi-ITU-T.

Uhlobo ngalunye lunendawo yalo yokusetyenziswa kwaye ukuvela kwezi nkcukacha zefiber optical kubonisa ukuvela kweteknoloji yenkqubo yothumelo ukusuka kufakelo lwangaphambili lwemowudi enye yefiber optical ukuza kuthi ga ngoku. Ukukhetha eyona ilungileyo kwiprojekthi yakho kunokubaluleka ngokwentsebenzo, iindleko, ukuthembeka kunye nokhuseleko. Kule post, ndiyakwazi ukucacisa kancinci malunga nokuhluka phakathi kwenkcazo ye-G.65x yochungechunge lweentsapho ze-fiber optical mode eyodwa. Ndiyathemba ukukunceda wenze isigqibo esifanelekileyo.

G.652

I-ITU-T G.652 ifayibha yaziwa nangokuthi i-SMF eqhelekileyo (i-fiber mode enye) kwaye iyona nto isetyenziswa ngokuqhelekileyo. Iza kwiintlobo ezine (A, B, C, D). U-A no-B banencopho yamanzi. I-C kunye no-D isusa incopho yamanzi ukuze isebenze ngokupheleleyo. I-G.652.A kunye ne-G.652.B iifayili zenzelwe ukuba zibe ne-zero-dispersion wavelength kufuphi ne-1310 nm, ngoko ke zilungiselelwe ukusebenza kwi-band ye-1310-nm. Banokusebenza kwakhona kwibhendi ye-1550-nm, kodwa ayilungiswanga kulo mmandla ngenxa yokusabalalisa okuphezulu. Le micu ye-optical idla ngokusetyenziswa ngaphakathi kwe-LAN, i-MAN kunye neenkqubo zokufikelela kwinethiwekhi. Izahlulo zamva nje (G.652.C kunye ne-G.652.D) zibonisa ukuphakama kwamanzi okuncitshisiweyo okubavumela ukuba basetyenziswe kummandla we-wavelength phakathi kwe-1310 nm kunye ne-1550 nm exhasa ukuhanjiswa kwe-Coarse Wavelength Division Multiplexed (CWDM).

G.653

I-G.653 i-fiber yemowudi enye yaphuhliswa ukujongana nale ngquzulwano phakathi kwe-bandwidth engcono kwi-wavelength enye kunye nelahleko ephantsi kwenye. Isebenzisa ulwakhiwo oluntsonkothileyo kwindawo engundoqo kunye nommandla omncinci kakhulu, kwaye ubude be-zero chromatic dispersion yashenxiswa ukuya kwi-1550 nm ukuze ihambelane neyona lahleko iphantsi kwifayibha. Ngoko ke, i-G.653 fiber ikwabizwa ngokuba yi-dispersion-shifted fiber (DSF). I-G.653 inobungakanani obuncitshisiweyo obungundoqo, obuphuculwe kwiinkqubo zokuhambisa imowudi enye yexesha elide usebenzisa i-erbium-doped fiber amplifiers (EDFA). Nangona kunjalo, amandla ayo aphezulu kwi-fiber core inokuvelisa iziphumo ezingenanto. Enye yezona zinto zinzima kakhulu, i-four-wave mixing (FWM), iyenzeka kwi-Dense Wavelength Division Multiplexed (CWDM) inkqubo kunye ne-zero chromatic dispersion, ebangela ukuba i-crosstalk engamkelekanga kunye nokuphazamiseka phakathi kwamajelo.

G.654

Iimpawu ze-G.654 ezinesihloko esithi "iimpawu ze-cut-off shifted single mode optical fiber kunye nentambo." Isebenzisa ubungakanani obukhulu be-core owenziwe kwi-silica ecocekileyo ukufezekisa ukusebenza okufanayo kwexesha elide kunye nokunciphisa okuphantsi kwibhendi ye-1550-nm. Ngokuqhelekileyo ikwanokusasazwa okuphezulu kwe-chromatic kwi-1550 nm, kodwa ayenzelwanga ukusebenza kwi-1310 nm konke konke. Ifayibha ye-G.654 inokusingatha amanqanaba aphezulu ombane phakathi kwe-1500 nm kunye ne-1600 nm, eyona nto ilungiselelwe ukusetyenziswa kwexesha elide lokuhamba ngaphantsi kolwandle.

G.655

I-G.655 yaziwa ngokuba yi-non-zero dispersion-shifted fiber (NZDSF). Inomlinganiselo omncinci, olawulwayo we-chromatic dispersion kwi-C-band (1530-1560 nm), apho i-amplifiers isebenza kakuhle, kwaye inendawo enkulu engundoqo kune-G.653 fiber. I-NZDSF fiber inqoba iingxaki ezinxulumene nokuxuba amaza amane kunye nezinye iziphumo ezingabonakaliyo ngokuhambisa i-zero-dispersion wavelength ngaphandle kwefestile yokusebenza ye-1550-nm. Kukho iindidi ezimbini zeNZDSF, ezaziwa ngokuba (-D)NZDSF kunye (+D)NZDSF. Banethambeka ngokulandelelana elibi kunye nelincomekayo xa lithelekiswa nobude obungamaza. Lo mfanekiso ulandelayo ubonisa iimpawu zokusasazwa kweentlobo ezine eziphambili zendlela enye yosinga. Ukusabalalisa kwechromatic eqhelekileyo ye-G.652 i-fiber ehambelanayo yi-17ps / nm / km. Iifiber ze-G.655 zazisetyenziselwa ikakhulu ukuxhasa iinkqubo zexesha elide ezisebenzisa ukuhanjiswa kwe-DWDM.

G.656

Kunye neentsinga ezisebenza kakuhle kuluhlu lwamaza obude, ezinye ziyilelwe ukusebenza kakuhle kubude obuthile. Le yiG.656, ekwabizwa ngokuba yiMedium Dispersion Fiber (MDF). Yenzelwe ukufikelela kwendawo kunye nefayibha yokutsala ixesha elide eqhuba kakuhle kwi-1460 nm kunye ne-1625 nm. Olu hlobo lwefiber lwaphuhliswa ukuxhasa iinkqubo ezinde ezisebenzisa i-CWDM kunye nokuhanjiswa kwe-DWDM ngaphaya koluhlu oluchaziweyo lwamaza. Kwaye ngexesha elifanayo, livumela ukuthunyelwa lula kwe-CWDM kwiindawo zedolophu, kunye nokwandisa umthamo wefiber kwiinkqubo ze-DWDM.

G.657

I-G.657 i-fiber optical fibers ijoliswe ukuba ihambelane ne-G.652 ye-optical fibers kodwa ibe nokusebenza okungafaniyo kwe-bend sensitivity. Yenzelwe ukuvumela iifayili ukuba zigobe, ngaphandle kokuchaphazela ukusebenza. Oku kuphunyezwa ngomsele obonayo obonisa ukukhanya okulahlekileyo kubuyele kumbindi, kunokuba kulahleke kwi-cladding, eyenza ukugoba okukhulu kwefiber. Njengoko sonke siyazi, kwi-cable TV kunye ne-FTTH kumashishini, kunzima ukulawula i-radius ye-bend kwintsimi. I-G.657 ngowona mgangatho wamva nje wezicelo ze-FTTH, kwaye, kunye ne-G.652 yeyona isetyenziswa kakhulu kuthungelwano lokugqibela lwefayibha.

Ukusuka kwisicatshulwa esingasentla, siyazi ukuba uhlobo olwahlukileyo lwefiber yemowudi enye inesicelo esahlukileyo. Ekubeni i-G.657 ihambelana ne-G.652, abanye abacwangcisi nabafakeli badla ngokudibana nabo. Enyanisweni, i-G657 ine-radius yokugoba enkulu kune-G.652, efanelekileyo kakhulu kwizicelo ze-FTTH. Kwaye ngenxa yeengxaki ze-G.643 ezisetyenziswa kwinkqubo ye-WDM, ngoku ayifane isetyenziswe, ifakwe kwi-G.655. G.654 isetyenziswa ikakhulu kwi-subsea application. Ngokwale ndinyana, ndiyathemba ukuba unokuyiqonda ngokucacileyo le micu yendlela enye, enokukunceda wenze isigqibo esifanelekileyo.


Ixesha lokuposa: Sep-03-2021