Nzira yekushandisa chiedza kutumira ruzivo inogona kunzi ine nhoroondo refu.
Iyo yemazuva ano "Beacon Tower" yakabvumira vanhu kuti vaone zviri nyore kutumira ruzivo kuburikidza nechiedza.Nekudaro, iyi primitive optical communication nzira iri kumashure, inoganhurwa nedanho rekutapurirana rinoonekwa neziso rakashama, uye kuvimbika hakuna kukwirira.Nekufambiswa kwezvinodiwa zvekufambiswa kwemashoko ezvemagariro evanhu, kuberekwa kwemazuva ano optical communication yakasimudzirwa zvakare.
Tanga yemazuva ano optical communication technology
Muna 1800, Alexander Graham Bell akagadzira "foni yemaziso."
Muna 1966, veBritish-Chinese Gao Kun vakaronga dzidziso ye optical fiber transmission, asi panguva iyoyo optical fiber kurasikirwa yakanga yakakwira se1000dB/km.
Muna 1970, kutsvagisa uye kuvandudzwa kwequartz fiber uye semiconductor laser tekinoroji yakaderedza kurasikirwa kwefiber kusvika ku20dB/km, uye iyo laser intensity yakakwira, kuvimbika kwakasimba.
Muna 1976, kuenderera mberi kwekugadzirwa kwefiber tekinoroji kwakaderedza kurasikirwa ne0.47dB/km, izvo zvaireva kuti kurasikirwa kweiyo nzira yekufambisa kwakagadziriswa, izvo zvakakurudzira kukura kwakasimba kweiyo optical transmission technology.
Wongorora nhoroondo yekuvandudza yetiweki yekutumira
Iyo network yekutumira yapfuura makore anopfuura makumi mana.Muchidimbu, yakasangana nePDH, SDH/MSTP,
Iyo tekinoroji kusimudzira uye generational innovation yeWDM/OTN uye PeOTN.
Chizvarwa chekutanga chewaya network kupa masevhisi ezwi akagamuchirwa PDH (Plesiochronous Digital Hierarchy) tekinoroji.
Chizvarwa chechipiri chinopa Webhu yekuwana masevhisi uye TDM yakatsaurwa mitsetse, uchishandisa SD (Synchronous Digital Hierarchy)/MSTP (Multi-Service Transport Platform) tekinoroji.
Chizvarwa chechitatu chakatanga kutsigira kubatanidzwa kwevhidhiyo masevhisi uye data data, vachishandisa WDM (Wavelength Division Multiplexing, Wavelength Division Multiplexing)/OTN (Optical Transmission Network, Optical Transmission Network) tekinoroji.
Chizvarwa chechina chinovimbisa 4K yakakwirira-tsanangudzo yevhidhiyo uye yemhando yakavanzika mutsara ruzivo, uchishandisa PeOTN (Packet enhancedOTN, packet yakawedzera OTN) tekinoroji.
Muchikamu chekutanga chekukura kwezvizvarwa zviviri zvekutanga, zvemashoko ezwi, Web Internet access uye TDM yakavanzika mutsara masevhisi, anomiririrwa neSDH/MSTP synchronous digital system tekinoroji, inotsigira akawanda mainterface akadai seEthernet, ATM/IMA, nezvimwewo, uye inogona kubatanidza CBR/VBR yakasiyana.Encapsulate masevhisi muSDH mafuremu, patsanura muviri mapaipi akaomarara, uye tarisa kune yakaderera-kumhanya uye diki-chemesevhisi.
Mushure mekupinda muchikamu chechitatu chekukura, nekukura nokukurumidza kwehutano hwekutaurirana, kunyanya vhidhiyo uye data centre interconnection services, network bandwidth yakakurumidza.Iyo optical layer tekinoroji inomiririrwa neWDM tekinoroji inoita kuti zvibvire kuti imwe fiber itakure mamwe masevhisi.Kunyanya, tekinoroji yeDWDM (Dense Wavelength Division Multiplexing) yakashandiswa zvakanyanya mumatanho makuru ekutapurirana mudzimba, kugadzirisa zvachose dambudziko rekutapurirana.Nyaya yekureba uye bandwidth capacity.Tichitarisa chiyero chekuvakwa kwetiweki, 80x100G yave iyo huru pamitsetse yehurefu refu, uye 80x200G network network uye metropolitan area network yakagadzira nekukurumidza.
Pakutakura masevhisi akabatanidzwa akadai sevhidhiyo uye mitsara yakatsaurirwa, iyo yekufambisa network inoda kuchinjika uye kungwara.Naizvozvo, tekinoroji yeOTN inobuda zvishoma nezvishoma.OTN imhando-itsva yeoptical transmission technology system inotsanangurwa neITU-T G.872, G.798, G.709 nemamwe maprotocol.Inosanganisira hurongwa hwakakwana hwe optical layer uye magetsi layer, uye ine network inoenderana kune yega yega.manejimendi yekutarisa mameshini uye network survivability mechanism.Tichitarisa kubva kune azvino maitirwo ekuvaka network, OTN yave chiyero chekutumira network, kunyanya mukuvaka kwevashandisi venzvimbo network uye metropolitan nzvimbo network.OTN tekinoroji yakavakirwa pamagetsi layer crossover inogamuchirwa, uye iyo yebazi mutsara wekuparadzanisa dhizaini inoshandiswa., Kuti uwane kudhirowa kwedivi retiweki nedivi remutsara, kuvandudza zvakanyanya kuchinjika kwetiweki uye kugona kukurumidza kuvhura uye kutumira masevhisi.
Business-oriented bearer network shanduko
Kuwedzera kukwidziridzwa kweshanduko yedhijitari munzvimbo dzese dzehupfumi hwemagariro kwakaunza kusimudzira kwakafanana kweindasitiri yeICT yese uye hupfumi hwedhijitari, uye yakasimudzira uye yakakonzera shanduko dzakadzama muindasitiri.Nekuwanda kwenhamba huru yemabhizinesi ehunyanzvi mumaindasitiri akatwasuka, maindasitiri echinyakare uye mamodheru anoshanda uye mhando dzemabhizinesi ari kugara achivakwa patsva, kusanganisira: mari, nyaya dzehurumende, kurapwa, dzidzo, indasitiri uye mamwe minda.Kutarisana nekuwedzera kuri kudiwa kwemhando yepamusoro uye yakapatsanurwa yekubatanidza bhizinesi, tekinoroji yePeOTN zvishoma nezvishoma yakatanga kushandiswa zvakanyanya.
· Iwo L0 neL1 akaturikidzana anopa akaomesesa “akaoma” mapaipi anomiririrwa newavelength λ uye sub-channel ODUk.Yakakura bandwidth uye yakaderera kunonoka ndiwo mabhenefiti ayo makuru.
·Iyo L2 layer inogona kupa inochinjika “nyoro” pombi.Iyo bandwidth yepombi inofananidzwa zvizere nebasa uye shanduko nekuchinja kwesevhisi traffic.Flexibility uye pane-inoda ndiwo mabhenefiti ayo makuru.
Kubatanidza zvakanakira SDH/MSTP/MPLS-TP yekutakura diki-chete masevhisi, kugadzira L0+L1+L2 yekufambisa network mhinduro, kuvaka yakawanda-sevhisi yekufambisa chikuva PeOTN, ichigadzira yakazara yakazara kutakura ine akawanda masimba mune imwe network.Muna 2009, ITU-T yakawedzera kugona kweOTN kutsigira masevhisi akasiyana uye yakabatanidza zviri pamutemo PeOTN muchiyero.
Mumakore achangopfuura, vashandi vepasirese vakaita nhamburiko mumusika wehurumende-bhizinesi rakazvimiririra.Iwo matatu makuru anoshanda epamba ari kushingaira kuvandudza OTN hurumende-bhizinesi yakavanzika network kuvaka.Makambani emupurovhinzi akaisawo mari yakawanda.Parizvino, vanopfuura makumi matatu vemakambani epurovhinzi vakavhura OTN.Yakakwirira-yemhando yepamusoro network yakavanzika, uye yakaburitsa yakakwira-yakakosha mitsara zvigadzirwa zvakavakirwa paPeOTN, kusimudzira iyo yekufambisa network kubva ku "basic resource network" kuenda ku "business bearer network."
Nguva yekutumira: Nov-04-2021