Dịka anyị maara, kemgbe afọ 1990, ejirila teknụzụ WDM WDM mee njikọ eriri fiber-optic ogologo oge nke narị narị ma ọ bụ ọbụna puku kilomita. Maka ọtụtụ mpaghara nke mba ahụ, akụrụngwa eriri bụ ihe onwunwe ya kachasị ọnụ, ebe ọnụ ahịa nke ihe transceiver dị obere.
Agbanyeghị, site na mmụba nke ọnụego data na netwọk dịka 5G, teknụzụ WDM na-aghọwanye ihe dị mkpa na njikọ dị mkpirikpi, nke a na-etinye na nnukwu olu ma ya mere ha na-enwe mmetụta karịa ọnụ ahịa na nha nke mgbakọ transceiver.
Ugbu a, netwọk ndị a ka na-adabere na puku kwuru puku eriri anya otu ụdị nke a na-ekesa n'otu oge site na ọwa nke multiplexing nkewa oghere, yana obere ọnụego data nke ihe dịka narị ole na ole Gbit/s (800G) kwa ọwa, yana obere ọnụọgụgụ nke ngwa enwere ike itinye na klas T.
Agbanyeghị, n'ọdịnihu a na-ahụ anya, echiche nke njikọta oghere nkịtị ga-eru oke nke nhazi ya n'oge na-adịghị anya, a ga-agbakwunyekwa ya site na nhazi spectral nke iyi data na eriri ọ bụla iji nọgide na-enwe mmụba ọzọ na ọnụego data. Nke a nwere ike imepe oghere ngwa ọhụrụ zuru oke maka teknụzụ WDM, ebe oke nhazi kachasị na ọnụọgụ ọwa na ọnụego data dị oke mkpa.
N'ọnọdụ a,ihe eji ejikọta comb ugboro ole anya (FCG)na-arụ ọrụ dị mkpa dị ka isi iyi ọkụ dị obere, nke a kapịrị ọnụ, nke nwere ike inye ọtụtụ ndị na-ebu ọkụ anya nke ọma. Na mgbakwunye, uru dị mkpa nke combs ugboro ole anya bụ na ahịrị combs ahụ dị nhata n'ime ugboro ole ha na-eme, si otú a na-ebelata mkpa maka eriri nche dị n'etiti ọwa ma na-ezere njikwa ugboro ole a ga-achọ maka otu ahịrị na atụmatụ ọdịnala site na iji ọtụtụ laser DFB.
Ọ dị mkpa ịmara na uru ndị a metụtara ọ bụghị naanị ndị na-ebufe WDM kamakwa ndị na-anabata ha, ebe enwere ike iji otu jenerato comb dochie usoro oscillator mpaghara dị iche iche (LO). Ojiji nke jenerato comb LO na-eme ka nhazi akara dijitalụ dịkwuo mfe maka ọwa WDM, si otú a na-ebelata mgbagwoju anya nke nnata ma na-eme ka nnabata mkpọtụ dịkwuo elu.
Tinyere nke ahụ, iji akara mbo LO nwere mkpọchi nkebi maka nnabata nkekọ na-eme ka o kwe omume ịhazigharị ụdị ebili mmiri nke akara WDM dum, si otú a na-akwụghachi ụgwọ maka nsogbu ndị sitere na enweghị akara anya na eriri nnyefe. Na mgbakwunye na uru echiche ndị a nke nnyefe mgbaàmà dabere na mbo, obere nha na mmepụta oke dị ọnụ ala bụkwa isi ihe dị mkpa maka transceivers WDM n'ọdịnihu.
Ya mere, n'etiti echiche dị iche iche nke ihe na-emepụta akara mgbama mbo, ngwaọrụ nha nha chip na-adọrọ mmasị karịsịa. Mgbe ejikọtara ya na sekit photonic agbakwunyere nke ukwuu maka nhazi akara data, multiplexing, nhazi na nnata, ngwaọrụ ndị dị otú ahụ nwere ike ijide igodo nke transceivers WDM dị obere, nke dị irè nke ukwuu nke enwere ike imepụta n'ọtụtụ buru ibu na ọnụ ala dị ala, yana ikike nnyefe ruo iri Tbit/s kwa eriri.
Foto a na-egosi atụmatụ nke onye na-ebufe WDM site na iji comb optical frequency comb FCG dị ka isi iyi ọkụ multi-wavelength. A na-ebu ụzọ kewaa akara comb FCG na demultiplexer (DEMUX) wee banye na modulator electro-optical EOM. Site na ya, a na-etinye mgbama ahụ na modulation QAM quadrature dị elu maka arụmọrụ spectral kacha mma (SE).
N'ebe a na-ebuga ihe, a na-ejikọta ọwa ndị ahụ na multiplexer (MUX) ma na-ebufe akara WDM n'elu eriri otu ụdị. Na njedebe nnata, onye nnata multiplexing nkewa wavelength division (WDM Rx), na-eji oscillator mpaghara LO nke 2nd FCG maka nchọpụta coherent multiwavelength. A na-ekewa ọwa nke akara WDM ntinye site na demultiplexer ma nye ya na coherent receiver array (Coh. Rx). ebe a na-eji demultiplexing ugboro nke oscillator mpaghara LO dị ka ntụaka nkebi maka onye nnata coherent ọ bụla. Arụmọrụ nke njikọ WDM dị otú ahụ dabere n'ụzọ dị ukwuu na ihe na-emepụta akara comb dị n'okpuru, karịsịa obosara ahịrị optical na ike optical kwa ahịrị comb.
N'ezie, teknụzụ comb ugboro ole anya ka dị n'ọkwa mmepe, ọnọdụ ngwa ya na nha ahịa ya pere mpe. Ọ bụrụ na ọ nwere ike imeri nsogbu teknụzụ, belata ọnụ ahịa ma melite ntụkwasị obi, mgbe ahụ ọ ga-ekwe omume iru ngwa dị elu na nnyefe anya.
Oge ozi: Nọvemba-21-2024