Sezvatinoziva, kubvira kuma1990, tekinoroji yeWDM WDM yave ichishandiswa kune ma "long-haul fiber-optic link" emakiromita mazana kana zviuru. Kunzvimbo zhinji dzenyika, fiber infrastructure ndiyo inonyanya kudhura, nepo mutengo wezvikamu zve transceiver wakaderera.
Zvisinei, nekuwedzera kwehuwandu hwedata muma network akadai se5G, tekinoroji yeWDM iri kuramba ichikoshawo mu short-haul links, ayo anoiswa muhuwandu hwakawanda uye nekudaro anonyanya kukoshesa mutengo nehukuru hwe transceiver assemblies.
Parizvino, ma network aya achiri kuvimba nezviuru zve single-mode optical fibers dzinotumirwa pamwe chete kuburikidza nenzira dzekuparadzanisa nzvimbo, nedata rates shoma inosvika mazana mashoma eGbit/s (800G) pachiteshi chimwe nechimwe, nenhamba shoma yekushandiswa kunogona kuitwa muT-class.
Zvisinei, mune ramangwana rinoonekwa, pfungwa ye common spatial parallelization ichasvika pamiganhu yekukwanisa kwayo kukura, uye ichafanirwa kuwedzerwa ne spectral parallelization ye data streams mu fiber yega yega kuitira kuti data rirambe richikwira zvakanyanya. Izvi zvinogona kuvhura nzvimbo itsva yekushandisa tekinoroji yeWDM, umo scalability yakanyanya maererano nehuwandu hwema channels uye data rate kwakakosha.
Muchirevo ichi,jenareta remaoptical frequency comb (FCG)inoita basa guru sechiedza chakasimba, chakasimba, chine mafungu akawanda chinogona kupa huwandu hwakawanda hwezvinotakura optical zvakajeka. Pamusoro pezvo, mukana wakakosha wema frequency combs ndewekuti mitsetse yecomb yakaenzana mu frequency, nokudaro ichirerutsa zvinodiwa zve inter-channel guard bands uye kudzivirira frequency control inodiwa kune mutsetse mumwe chete muchirongwa chetsika uchishandisa array yeDFB lasers.
Zvakakosha kuziva kuti mabhenefiti aya anoshanda kwete chete kumaWDM transmitters asiwo kumareceiver awo, uko discrete local oscillator (LO) arrays inogona kutsiviwa ne single comb generator. Kushandiswa kwemaLO comb generators kunowedzera kubatsira kugadziriswa kwemasaini edhijitari kumaWDM channels, nokudaro zvichideredza kuoma kwereceiver uye kuwedzera kushivirira kwephase noise.
Pamusoro pezvo, kushandiswa kwezviratidzo zveLO comb zvine phase-locking kuti zvigamuchirwe pamwe chete zvinoita kuti zvikwanisike kugadzirazve waveform yenguva yechiratidzo chose cheWDM, nokudaro zvichiripa kukanganisa kunokonzerwa nekusaenderana kwe optical mu transmission fiber. Kuwedzera kune izvi zvakanakira zve cog-based signal transmission, saizi diki uye kugadzirwa kwehuwandu kusingadhuri zvakakoshawo kune ma transceivers eWDM emangwana.
Saka, pakati pepfungwa dzakasiyana-siyana dzekugadzira masaini emucomb, zvishandiso zvechip-scale zvinonyanya kufarirwa. Kana zvikasanganiswa nemacircuits akabatanidzwa ephotonic anogona kukura zvakanyanya ekugadzirisa masaini edata, multiplexing, routing uye reception, zvishandiso zvakadaro zvinogona kuva kiyi yekutumira maWDM transceivers madiki uye anoshanda zvakanaka anogona kugadzirwa akawanda pamutengo wakaderera, aine simba rekutumira rinosvika makumi eTbit/s pafiber imwe neimwe.
Mufananidzo unotevera unoratidza mufananidzo weWDM transmitter ichishandisa optical frequency comb FCG senzvimbo yechiedza che multi-wavelength. Chiratidzo cheFCG comb chinotanga chaparadzaniswa mu demultiplexer (DEMUX) uye chobva chapinda muEOM electro-optical modulator. Kuburikidza neizvi, chiratidzo chinoiswa pasi pe advanced QAM quadrature amplitude modulation kuti ive nekushanda zvakanaka kwespectral (SE).
Pakubuda kwetransmitter, nzira idzi dzinobatanidzwazve mu multiplexer (MUX) uye maWDM signals anotumirwa kuburikidza ne single mode fiber. Pakusvika kwereceiver, wavelength division multiplexing receiver (WDM Rx), inoshandisa LO local oscillator ye2nd FCG kuti ionekwe ne multiwavelength coherent. Nzira dze input WDM signals dzinoparadzaniswa ne demultiplexer uye dzinopihwa kune coherent receiver array (Coh. Rx). uko demultiplexing frequency ye local oscillator LO inoshandiswa se phase reference ye coherent receiver yega yega. Kushanda kwe WDM link dzakadaro zviri pachena kuti kunoenderana zvakanyanya ne baseline comb signal generator, kunyanya optical line width uye optical power per comb line.
Ehe, tekinoroji ye optical frequency comb ichiri muchikamu chekuvandudzwa, uye mamiriro ayo ekushandiswa uye saizi yemusika zvishoma. Kana ikakwanisa kukunda zvipingamupinyi zvehunyanzvi, kuderedza mitengo uye kuvandudza kuvimbika, saka zvinokwanisika kuwana mashandisirwo emazinga ehukuru mukutumirwa kwe optical.
Nguva yekutumira: Mbudzi-21-2024