I-OXC (i-optical cross-connect) yinguqu eguqukileyo ye-ROADM (i-Reconfigurable Optical Add-Drop Multiplexer).
Njengoko i-core switching element ye-optical networks, i-scalability kunye ne-cost-effectiveness of optical cross-connects (OXCs) ayigqibekanga nje ukuguquguquka kwe-topology yenethiwekhi kodwa ichaphazela ngokuthe ngqo iindleko zokwakha kunye nokusebenza kunye nokugcinwa kweendleko ze-optical networks ezinkulu. Iindidi ezahlukeneyo ze-OXC zibonisa umahluko omkhulu kuyilo loyilo kunye nokuphunyezwa komsebenzi.
Lo mzobo ungezantsi ubonisa ulwakhiwo lweCDC-OXC yemveli (Colorless Directionless Optical Cross-Connect), esebenzisa i-wavelength selective switching (WSSs). Kwicala lomgca, i-1 × N kunye ne-N × 1 i-WSSs isebenza njengeemodyuli zokungena / ze-egress, ngelixa i-M × K WSSs kwicala lokudibanisa / ukulahla ilawula ukongezwa kunye nokuhla kwe-wavelengths. Ezi modyuli zidityaniswe nge-fiber optical ngaphakathi kwe-OXC backplane.
Umzobo: I-Architecture ye-CDC-OXC yeMveli
Oku kunokufezekiswa ngokuguqula i-backplane kwinethiwekhi ye-Spanke, okukhokelela kwi-architecture yethu ye-Spanke-OXC.
Umzobo: Spanke-OXC Architecture
Lo mzobo ungasentla ubonisa ukuba kwicala lomgca, i-OXC inxulunyaniswa neentlobo ezimbini zamazibuko: izibuko ezikhomba indlela kunye ne-fiber port. I-port ye-directional nganye ihambelana ne-geographic direction ye-OXC kwi-topology yenethiwekhi, ngelixa i-fiber port nganye imele iperi ye-bidirectional fibers ngaphakathi kwe-port ye-directory. Izibuko elizalathisayo liqulathe izibini ezininzi zefiber ze-bidirectional (oko kukuthi, izibuko ezininzi zefiber).
Ngelixa i-OXC esekwe kwi-Spanke ifezekisa ngokungqongqo ukungathinteli ukutshintshela ngoyilo oludityanisiweyo lwe-backplane oludityanisiweyo, imida yayo iya ibaluleke kakhulu njengoko i-traffic traffic inyuka. Umda wokubala we-port ye-wavelength ekhethiweyo yorhwebo (i-WSSs) (umzekelo, ubuninzi obukhoyo obuxhasiweyo yi-1 × 48 izibuko, ezifana ne-Finisar's FlexGrid Twin 1 × 48) kuthetha ukuba ukwandisa i-OXC dimension kufuna ukutshintshela yonke i-hardware, ebiza kakhulu kwaye ivimbela ukusetyenziswa kwakhona kwezixhobo ezikhoyo.
Nokuba inomgangatho ophezulu woyilo we-OXC osekwe kuthungelwano lwe-Clos, isaxhomekeke kwii-M×N WSSs ezibizayo, nto leyo eyenza kube nzima ukuhlangabezana neemfuno zophuculo olongezelelekileyo.
Ukujongana nalo mceli mngeni, abaphandi bacebise i-novel hybrid architecture: HMWC-OXC (Hybrid MEMS kunye neWSS Clos Network). Ngokudibanisa iinkqubo ze-microelectromechanical (MEMS) kunye ne-WSS, olu lwakhiwo lugcina intsebenzo ekufutshane-engathinteliyo ngelixa lixhasa amandla "okuhlawula-njengoko-ukhula", ukubonelela ngexabiso eliphantsi lokuphucula indlela yabaqhubi benethiwekhi ye-optical network.
Uyilo olungundoqo lwe-HMWC-OXC lulele kubume benethiwekhi ye-Clos enemigangatho emithathu.
Umzobo: I-Spanke-OXC Architecture esekelwe kwiiNethiwekhi ze-HMWC
Ukutshintsha kwe-MEMS ye-high-dimensional optical switches isetyenziswe kwi-input kunye ne-output layers, njenge-512 × 512 isikali ngoku ixhaswa buchwephesha bangoku, ukwenza i-pool yomthamo omkhulu. Uluhlu oluphakathi luqukethe iimodyuli ezincinci ze-Spanke-OXC, ezidityaniswe nge "T-ports" ukunciphisa ukuxinana kwangaphakathi.
Kwinqanaba lokuqala, abaqhubi banokwakha iziseko ezisekelwe kwi-Spanke-OXC ekhoyo (umzekelo, i-4 × 4 isikali), ngokulula ukuhambisa ukutshintshwa kwe-MEMS (umzekelo, i-32 × 32) kwi-input and output layers, ngelixa ugcina imodyuli enye ye-Spanke-OXC kwinqanaba eliphakathi (kule meko, inani le-T-ports liyi-zero). Njengoko iimfuno zenethiwekhi zanda, iimodyuli ezintsha ze-Spanke-OXC zongezwa ngokuthe ngcembe kwinqanaba eliphakathi, kwaye ii-T-ports ziqwalaselwe ukudibanisa iimodyuli.
Ngokomzekelo, xa ukwandisa inani leemodyuli zomgangatho ophakathi ukusuka kwelinye ukuya kweyesibini, inani le-T-ports libekwe kwelinye, ukwandisa umlinganiselo opheleleyo ukusuka kwisine ukuya kwisithandathu.
Umzobo: Umzekelo we-HMWC-OXC
Le nkqubo ilandela umqobo weparameter M > N × (S − T), apho:
M linani lamazibuko e-MEMS,
N linani leemodyuli zomaleko ophakathi,
S linani lezibuko kwi-Spanke-OXC eyodwa, kunye
T linani lamazibuko adityanisiweyo.
Ngokuhlenga-hlengisa ezi parameters ngamandla, i-HMWC-OXC inokuxhasa ukwandiswa kancinci kancinci ukusuka kwisikali sokuqala ukuya kumlinganiselo ekujoliswe kuwo (umzekelo, 64×64) ngaphandle kokubuyisela zonke izixhobo zehardware ngaxeshanye.
Ukuqinisekisa ukusebenza kwangempela kolu lwakhiwo, iqela lophando lenze iimvavanyo zokulinganisa ezisekelwe kwizicelo zendlela yokukhanya.
Umfanekiso: Ukuvala iNdlela yokuSebenza yeHMWC Network
Ukulinganisa kusebenzisa imodeli ye-traffic ye-Erlang, kucingwa ukuba izicelo zenkonzo zilandela ukuhanjiswa kwe-Poisson kunye namaxesha okubambisa inkonzo alandela usasazo olubi lwe-exponential. Umthwalo opheleleyo wetrafikhi umiselwe kwi-3100 Erlangs. I-OXC ekujoliswe kuyo yi-64 × 64, kwaye igalelo kunye nemveliso ye-MEMS isikali nayo i-64 × 64. Uluhlu oluphakathi lwe-module ye-Spanke-OXC yoqwalaselo lubandakanya i-32 × 32 okanye i-48 × 48 iinkcukacha. Inani lee-T-ports livela kwi-0 ukuya kwi-16 ngokuxhomekeke kwiimfuno zemeko.
Iziphumo zibonisa ukuba, kwimeko ene-directional dimension ye-D = 4, amathuba okuthintela i-HMWC-OXC isondele kwisiseko se-Spanke-OXC yendabuko (S (64,4)). Umzekelo, usebenzisa i-v (64,2,32,0,4) uqwalaselo, ukubhloka okunokwenzeka kwanda kuphela malunga ne-5% phantsi komthwalo ophakathi. Xa ubukhulu becala bunyuka ukuya ku-D = 8, ukuvinjelwa kwamathuba kuyanda ngenxa ye "trunk effect" kunye nokunciphisa ubude befiber kwicala ngalinye. Nangona kunjalo, lo mbandela unokuncitshiswa ngokufanelekileyo ngokunyusa inani le-T-ports (umzekelo, i-v (64,2,48,16,8) uqwalaselo).
Ngokucacileyo, nangona ukongezwa kweemodyuli ze-middle-layer kunokubangela ukuvinjelwa kwangaphakathi ngenxa yengxabano ye-T-port, i-architecture iyonke isenokufezekisa ukusebenza kakuhle ngokucwangciswa okufanelekileyo.
Uhlalutyo lweendleko lubonisa ngakumbi uncedo lwe-HMWC-OXC, njengoko kubonisiwe kumzobo ongezantsi.
Umzobo: Ukuvinjelwa okunokwenzeka kunye neendleko ze-OXC ezahlukeneyo ze-Architectures
Kwiimeko ezinobuninzi obuphezulu kunye ne-80 wavelengths / fiber, i-HMWC-OXC (v (64,2,44,12,64)) inokunciphisa iindleko nge-40% xa kuthelekiswa ne-Spanke-OXC yendabuko. Kwiimeko zobude obuphantsi (umzekelo, i-50 wavelengths/fiber), inzuzo yeendleko ibaluleke ngakumbi ngenxa yokuncitshiswa kwenani lee-T-ports ezifunekayo (umz., v (64,2,36,4,64)).
Olu ncedo lwezoqoqosho luvela ekudityanisweni koxinzelelo oluphezulu lwezibuko lokutshintsha kwe-MEMS kunye nesicwangciso sokwandisa imodyuli, engathinteli kuphela iindleko zokutshintshwa kwe-WSS enkulu kodwa nokunciphisa iindleko ezongezelelekileyo ngokuphinda kusetyenziswe iimodyuli ezikhoyo zeSpanke-OXC. Iziphumo zokulinganisa zikwabonisa ukuba ngokulungelelanisa inani leemodyuli ze-middle-layer kunye nomlinganiselo we-T-ports, i-HMWC-OXC inokulungelelanisa ukusebenza kunye neendleko phantsi komthamo we-wavelength eyahlukeneyo kunye nokuqulunqwa kolwalathiso, ukubonelela abaqhubi ngamathuba okuphucula amaninzi.
Uphando lwexesha elizayo lunokuphonononga ngakumbi i-algorithms yolwabiwo lwe-T-port ukunyusa ukusetyenziswa kobutyebi bangaphakathi. Ngaphaya koko, ngenkqubela-phambili kwiinkqubo zokwenziwa kwe-MEMS, ukudityaniswa kokutshintsha komgangatho ophezulu kuya kwandisa ngakumbi ukwehla kolu lwakhiwo. Kubaqhubi benethiwekhi ye-optical network, olu lwakhiwo lufanelekile ngokukodwa kwiimeko ezinokukhula okungaqinisekanga kwe-traffic, ukubonelela ngesisombululo esisebenzayo sobugcisa bokwakha inethiwekhi ye-backbone ene-resilient kunye ne-scalable all-optical backbone network.
Ixesha lokuposa: Aug-21-2025