Tinoziva kuti kubvira kuma1990, tekinoroji yeWDM wavelength division multiplexing yave ichishandiswa kune ma fiber optic links emakiromita marefu anotora mazana kana kunyange zviuru zvemakiromita. Kune nyika zhinji nenzvimbo, fiber optic infrastructure ndiyo inonyanya kudhura, nepo mutengo we transceiver components wakaderera.
Zvisinei, nekukura kuri kuita huwandu hwekutumira data re network senge 5G, tekinoroji yeWDM yave kukosha zvakanyanya mumibatanidzwa mipfupi, uye huwandu hwemibatanidzwa mipfupi hwakakura zvikuru, zvichiita kuti mutengo nehukuru hwezvikamu zve transceiver zvive nyore kunzwisisa.
Parizvino, ma network aya achiri kushandisa zviuru zve single-mode optical fibers kuti atumirwe pa parallel transmission kuburikidza ne space division multiplexing channels, uye data rate ye chiteshi chimwe nechimwe yakaderera, inosvika mazana mashoma eGbit/s (800G). T-level inogona kunge iine mashandisirwo mashoma.
Asi mune ramangwana rinoonekwa, pfungwa ye "ordinary spatial parallelization" ichasvika pamuganhu wayo we "scalability" munguva pfupi iri kutevera, uye inofanira kuwedzerwa ne "spectrum parallelization" ye "data streams" mu "fiber" yega yega kuti irambe ichiwedzera kuvandudzwa kwe "data rates". Izvi zvinogona kuvhura nzvimbo itsva yekushandisa tekinoroji ye "wavelength division multiplexing", uko "scalability" yepamusoro ye "channel number" uye "data rate" yakakosha.
Muchiitiko ichi, jenareta rema frequency comb (FCG), senzvimbo ine mwenje wakawanda uye wakasimba, inogona kupa huwandu hwakawanda hwema optical carriers akanyatsotsanangurwa, nokudaro ichiita basa rakakosha. Pamusoro pezvo, mukana wakakosha we optical frequency comb ndewekuti mitsetse yemitsetse yemitsetse yakaenzana mu frequency, izvo zvinogona kurerutsa zvinodiwa zve inter channel guard bands uye kudzivirira frequency control inodiwa kune single lines muzvirongwa zvechinyakare uchishandisa DFB laser arrays.
Zvinofanira kucherechedzwa kuti mabhenefiti aya haangoshandi chete kune transmitter ye wavelength division multiplexing, asiwo kune receiver yayo, uko discrete local oscillator (LO) array inogona kutsiviwa ne single comb generator. Kushandiswa kwe LO comb generators kunogona kuwedzera kurerutsa digital signal processing mu wavelength division multiplexing channels, nokudaro zvichideredza kuoma kwe receiver uye kuvandudza phase noise tolerance.
Pamusoro pezvo, kushandisa masaini eLO comb ane basa rakavharirwa nechikamu (phase-locked function) pakugamuchira pamwe chete kunogona kutogadzirazve waveform yenguva yechiratidzo che multiplexing chinopatsanurwa newavelength division, nokudaro kuchitsiva kukuvara kunokonzerwa nekusaenderana kwe optical kwe transmission fiber. Kuwedzera kune zvakanakira zvepfungwa zvichibva pakutumira masaini e comb, saizi diki uye kugadzirwa kukuru kunoshanda zvakanaka ndizvo zvinhu zvikuru zve transceivers dze multiplexing dzinopatsanurwa newavelength division mune ramangwana.
Saka, pakati pepfungwa dzakasiyana-siyana dzekugadzira masaini emucomb, zvishandiso zvechip level zvinonyanya kukosha. Kana zvikasanganiswa nemacircuits akabatanidzwa ephotonic anogona kukura zvakanyanya ekugadzirisa masaini edata, multiplexing, routing, uye reception, zvishandiso zvakadaro zvinogona kuva kiyi yema transceivers e multiplexing akaganhurirwa uye anoshanda zvakanaka anogona kugadzirwa muhuwandu hwakawanda nemutengo wakaderera, aine simba rekutumira remakumi eTbit/s pafiber imwe neimwe.
Pakubuda kwemagumo ekutumira, chiteshi chimwe nechimwe chinosanganiswazve kuburikidza ne multiplexer (MUX), uye chiratidzo che wavelength division multiplexing chinotumirwa kuburikidza ne single-mode fiber. Pamugumo wekugamuchira, wavelength division multiplexing receiver (WDM Rx) inoshandisa LO local oscillator yeFCG yechipiri kuti ione kupindirana kwe multi wavelength. Nzira ye input wavelength division multiplexing signal inoparadzaniswa ne demultiplexer uye yozotumirwa kune coherent receiver array (Coh. Rx). Pakati pavo, demultiplexing frequency ye local oscillator LO inoshandiswa sechikamu che reference ye coherent receiver yega yega. Kushanda kweiyi wavelength division multiplexing link zviri pachena kuti kunoenderana zvikuru ne basic comb signal generator, kunyanya hupamhi hwechiedza uye simba re optical remutsetse wega wega we comb.
Ehe, tekinoroji ye optical frequency comb ichiri muchikamu chekugadzirwa, uye mamiriro ekushandiswa kwayo nehukuru hwemusika zvishoma. Kana ikakwanisa kukunda zvipingamupinyi zvetekinoroji, kuderedza mitengo, uye kuvandudza kuvimbika, inogona kuwana mashandisirwo emazinga ehukuru mukutumirwa kwe optical.
Nguva yekutumira: Zvita-19-2024