I-OXC (i-optical cross-connect) inguqulo eguquliwe ye-ROADM (Reconfigurable Optical Add-Drop Multiplexer).
Njengento eyinhloko yokushintsha yamanethiwekhi okukhanya, ukuqina nokusebenza kahle kwe-optical cross-connects (OXCs) akunqumi kuphela ukuguquguquka kwezihloko zenethiwekhi kodwa futhi kunomthelela ngokuqondile ezindleko zokwakha nokusebenza nezokugcina amanethiwekhi amakhulu okusebenza. Izinhlobo ezahlukene ze-OXC zibonisa umehluko omkhulu ekwakhiweni kwezakhiwo nasekusetshenzisweni kokusebenza.
Isibalo esingezansi sibonisa ukwakheka kosiko kwe-CDC-OXC (Colorless Directionless Constisionless Optical Cross-Connect), esebenzisa amaswishi akhethiwe we-wavelength (WSSs). Ehlangothini lomugqa, ama-1 × N kanye no-N × 1 ama-WSS asebenza njengamamojula we-ingress/egress, kuyilapho ama-M × K WSS ohlangothini lwe-add/drop elawula ukungezwa nokwehla kwamaza obude. Lawa mamojula axhunywe ngemicu yokubona ngaphakathi kwendiza engemuva ye-OXC.
Umfanekiso: I-Architecture ye-CDC-OXC Yendabuko
Lokhu kungafezwa futhi ngokuguqula indiza engemuva ibe inethiwekhi ye-Spanke, okuholela ekwakhiweni kwethu kwe-Spanke-OXC.
Umfanekiso: I-Spanke-OXC Architecture
Isibalo esingenhla sibonisa ukuthi ohlangothini lomugqa, i-OXC ihlotshaniswa nezinhlobo ezimbili zamachweba: izimbobo eziqondisayo nezimbobo zefayibha. Imbobo ngayinye eqondisayo ihambisana nendawo ye-OXC ku-topology yenethiwekhi, kuyilapho imbobo yefayibha ngayinye imelela ipheya lamafayibha aqondiswa kabili ngaphakathi kwembobo eqondile. Imbobo eqondisayo iqukethe amapheya efayibha e-bidirectional amaningi (okungukuthi, izimbobo zefayibha eziningi).
Ngenkathi i-OXC esekelwe e-Spanke ifinyelela ekushintsheni okungavimbeli ngokuqinile ngomklamo wendiza engemuva exhumeke ngokugcwele, ukulinganiselwa kwayo kuya ngokuya kuphawuleka njengokwanda kwethrafikhi yenethiwekhi. Umkhawulo wesibalo sembobo sokushintsha okukhethayo kwe-wavelength yezentengiselwano (ama-WSS) (isibonelo, umkhawulo wamanje osekelwayo yizimbobo ezingu-1×48, njenge-FlexGrid Twin 1×48 ye-Finisar) kusho ukuthi ukunweba ubukhulu be-OXC kudinga ukushintshwa kwayo yonke ihadiwe, ebiza kakhulu futhi evimbela ukusetshenziswa kabusha kwezisetshenziswa ezikhona.
Noma inokwakheka okuphezulu kwe-OXC okusekelwe kumanethiwekhi we-Clos, isathembele kuma-M×N WSS abizayo, okwenza kube nzima ukuhlangabezana nezidingo zokuthuthukisa ezikhulayo.
Ukubhekana nale nselelo, abacwaningi bahlongoze ukwakhiwa kwenoveli eyingxubevange: i-HMWC-OXC (Hybrid MEMS kanye ne-WSS Clos Network). Ngokuhlanganisa izinhlelo ze-microelectromechanical (MEMS) kanye ne-WSS, lesi sakhiwo sigcina ukusebenza okuseduze okungavimbeli kuyilapho sisekela amakhono “wokukhokha njengoba ukhula”, sinikeza indlela yokuthuthukisa engabizi kakhulu yabaqhubi benethiwekhi ye-optical network.
Idizayini eyinhloko ye-HMWC-OXC ilele esakhiweni sayo senethiwekhi ye-Clos enezingqimba ezintathu.
Umfanekiso: I-Spanke-OXC Architecture esekelwe ku-HMWC Networks
Amaswishi e-MEMS anobukhulu obuphezulu asetshenziswa kungqimba yokufaka neyokukhiphayo, njengesikali esingu-512×512 esisekelwa ubuchwepheshe bamanje, ukuze kwakheke ichweba elinomthamo omkhulu. Isendlalelo esimaphakathi siqukethe amamojula amaningi amancane e-Spanke-OXC, axhunywe “nge-T-ports” ukuze kuncishiswe ukuminyana kwangaphakathi.
Esigabeni sokuqala, opharetha bangakha ingqalasizinda ngokusekelwe ku-Spanke-OXC ekhona (isb, isikali se-4×4), ngokumane basebenzise ukushintshwa kwe-MEMS (isb, 32×32) kungqimba yokufaka nokukhiphayo, kuyilapho begcina imojula eyodwa ye-Spanke-OXC kungqimba oluphakathi (kulokhu, inombolo ye-T-ports inguziro). Njengoba izidingo zamandla enethiwekhi zikhula, amamojula amasha e-Spanke-OXC kancane kancane engezwa kungqimba oluphakathi, futhi ama-T-ports alungiselelwe ukuxhuma amamojula.
Isibonelo, lapho unweba inani lamamojula wesendlalelo esiphakathi ukusuka kweyodwa kuya kwamabili, inani le-T-ports isethwe kwelinye, ikhulisa ubukhulu obuphelele kusuka kwezine kuya kweziyisithupha.
Umfanekiso: Isibonelo se-HMWC-OXC
Le nqubo ilandela umkhawulo wepharamitha M > N × (S − T), lapho:
M inombolo yamachweba we-MEMS,
N inombolo yamamojula wesendlalelo esimaphakathi,
I-S inombolo yamachweba ku-Spanke-OXC eyodwa, kanye
T inombolo yezimbobo ezixhumene.
Ngokulungisa la mapharamitha ashukumisayo, i-HMWC-OXC ingasekela ukunwetshwa kancane kancane ukusuka esikalini sokuqala ukuya kubukhulu obuqondiwe (isb., 64×64) ngaphandle kokushintsha zonke izinsiza zehadiwe ngesikhathi esisodwa.
Ukuze kuqinisekiswe ukusebenza kwangempela kwalesi sakhiwo, ithimba locwaningo lenze izivivinyo zokulingisa ngokusekelwe kuzicelo zendlela yokubona enamandla.
Umfanekiso: Ukuvimbela Ukusebenza Kwenethiwekhi ye-HMWC
Ukulingisa kusebenzisa imodeli yethrafikhi ye-Erlang, uma kucatshangelwa ukuthi izicelo zesevisi zilandela ukusatshalaliswa kwe-Poisson kanye nezikhathi zokubamba isevisi zilandela ukusatshalaliswa kwe-exponential okungekuhle. Isamba sethrafikhi sibekwe ku-3100 Erlangs. Ubukhulu obuhlosiwe be-OXC bungama-64×64, futhi isikali se-MEMS sesendlalelo sokufaka nesiphumayo siphinde sibe ngu-64×64. Isendlalelo esimaphakathi sokucushwa kwemojula ye-Spanke-OXC ihlanganisa imininingwane engu-32×32 noma engu-48×48. Inombolo yezimbobo ze-T isukela ku-0 kuye ku-16 kuye ngezimfuneko zesimo.
Imiphumela ibonisa ukuthi, esimeni esinohlangothi oluqondile lwe-D = 4, amathuba okuvinjwa e-HMWC-OXC aseduze nalawo esisekelo se-Spanke-OXC esivamile (S(64,4)). Isibonelo, kusetshenziswa ukucushwa kwe-v(64,2,32,0,4), amathuba okuvimba akhula cishe ngo-5% kuphela ngaphansi komthwalo omaphakathi. Lapho ubukhulu bokuqondisa bukhuphuka bufika ku-D = 8, amathuba okuvimbela ayanda ngenxa "yomphumela we-trunk" kanye nokwehla kobude be-fiber ohlangothini ngalunye. Kodwa-ke, le nkinga ingadanjiswa ngempumelelo ngokwandisa inani lezimbobo ze-T (isibonelo, ukucushwa kwe-v(64,2,48,16,8).
Ngokuphawulekayo, nakuba ukungezwa kwamamojula we-mid-layer kungabangela ukuvinjelwa kwangaphakathi ngenxa yombango we-T-port, i-architecture iyonke isengakwazi ukufeza ukusebenza okuthuthukisiwe ngokucushwa okufanele.
Ukuhlaziywa kwezindleko kuphinde kugqamise izinzuzo ze-HMWC-OXC, njengoba kuboniswe esithombeni esingezansi.
Umfanekiso: Amathuba Okuvimbela kanye Nezindleko Zezakhiwo Ezihlukile Ze-OXC
Ezimeni zokuminyana okuphezulu ezinamaza angamaza/ifiber angu-80, i-HMWC-OXC (v(64,2,44,12,64)) inganciphisa izindleko ngo-40% uma kuqhathaniswa ne-Spanke-OXC evamile. Ezimeni zamaza amaza aphansi (isb, 50 wavelengths/fiber), inzuzo yezindleko ibaluleke nakakhulu ngenxa yenani elincishisiwe lama-T-ports adingekayo (isb, v(64,2,36,4,64)).
Le nzuzo yezomnotho isukela ekuhlanganisweni kokuminyana okuphezulu kwechweba lokushintshwa kwe-MEMS kanye nesu lokunweba eliyimojuli, elingagwemi nje kuphela izindleko zokushintshwa kwe-WSS enkulu kodwa futhi elinciphisa izindleko ezikhuphukayo ngokusebenzisa kabusha amamojula akhona e-Spanke-OXC. Imiphumela yokulingisa iphinde ibonise ukuthi ngokulungisa inani lamamojula aphakathi nongqimba kanye nesilinganiso se-T-ports, i-HMWC-OXC ingakwazi ukulinganisa ngokuguquguqukayo ukusebenza kanye nezindleko ngaphansi komthamo we-wavelength ehlukene nokuhlelwa kwezikhombisi-ndlela, inikeze opharetha amathuba okuthuthukisa i-multi-dimensional.
Ucwaningo lwesikhathi esizayo lungaphinde luhlole ama-algorithms okunikezwa kwe-T-port ashukumisayo ukuze kuthuthukiswe ukusetshenziswa kwensiza yangaphakathi. Ngaphezu kwalokho, ngokuthuthuka ezinqubweni zokukhiqiza ze-MEMS, ukuhlanganiswa kwamaswishi anobukhulu obuphezulu kuzothuthukisa ukuqina kwalesi sakhiwo. Kuma-opharetha enethiwekhi yokubona, lesi sakhiwo sifaneleka ikakhulukazi izimo ezinokukhula kwethrafikhi okungaqinisekile, okuhlinzeka ngesixazululo esisebenzayo sobuchwepheshe sokwakha inethiwekhi yomgogodla wokubona wonke ongaguquki nesikandekayo.
Isikhathi sokuthumela: Aug-21-2025