Chirongwa che optical frequency kuonda zvichibva paMZM modulator

Chirongwa che optical frequency thinning yakavakirwa paMZM modulator

Iyo optical frequency dispersion inogona kushandiswa se liDARlight sourcekubudisa panguva imwe chete uye kuongorora nenzira dzakasiyana-siyana, uye inogonawo kushandiswa se-multi-wavelength light source ye800G FR4, kubvisa chimiro cheMUX. Kazhinji, iyo yakawanda-wavelength mwenje sosi ingave yakaderera simba kana isina kurongedzwa zvakanaka, uye kune akawanda matambudziko. Chirongwa chakaunzwa nhasi chine zvakawanda zvakanaka uye chinogona kutaurwa nezvacho kuti chitariswe. Chimiro chayo dhizaini inoratidzwa sezvizvi: Iyo yakakwirira-simbaDFB lasermwenje sosi ndeye CW mwenje munguva dura uye imwechete wavelength mukuwanda. Mushure mekupfuura nepakati amodulatorine imwe modulation frequency fRF, sideband ichagadzirwa, uye iyo yesideband nguva ndiyo modulated frequency fRF. Iyo modulator inoshandisa LNOI modulator ine hurefu hwe8.2mm, sezvinoratidzwa mumufananidzo b. Mushure mechikamu chakareba chepamusoro-simbaphase modulator, iyo modulation frequency iri zvakare fRF, uye chikamu chayo chinoda kugadzira iyo crest kana dhiri reiyo RF siginecha uye mwenje pulse hukama kune mumwe nemumwe, zvichikonzera kurira kukuru, zvichikonzera mazino akawanda ekuona. Iyo DC bias uye modulation kudzika kweiyo modulator inogona kukanganisa kupfava kweiyo optical frequency dispersion.

Masvomhu, chiratidzo mushure memunda wechiedza chagadziriswa ne modulator ndeichi:
Zvinogona kuoneka kuti iyo inobuda optical munda ndeye optical frequency dispersion ine frequency interval yewrf, uye kusimba kweiyo optical frequency dispersion zino kune hukama neDFB optical simba. Nekutevedzera kusimba kwechiedza ichipfuura nepakati peMZM modulator uyePM chikamu modulator, uyezve FFT, iyo optical frequency dispersion spectrum inowanikwa. Nhamba inotevera inoratidza hukama hwakananga pakati pe optical frequency flatness uye modulator DC bias uye modulation kudzika kwakavakirwa pakuenzanisa uku.

Mufananidzo unotevera unoratidza dhayagiramu inofananidzirwa ine MZM bias DC ye 0.6π uye modulation kudzika kwe 0.4π, iyo inoratidza kuti flatness yayo <5dB.

Inotevera dhayagiramu yepakeji yeMZM modulator, LN iri 500nm gobvu, kudzika kweetching i260nm, uye waveguide hupamhi i1.5um. Ukobvu hwegoridhi electrode i1.2um. Ukobvu hwekumusoro cladding SIO2 ndeye 2um.

Inotevera ndiyo spectrum yeOFC yakaedzwa, ine gumi nematatu optically sparse mazino uye flatness <2.4dB. Iyo modulation frequency ndeye 5GHz, uye iyo RF simba kurodha muMZM uye PM iri 11.24 dBm uye 24.96dBm zvakateerana. Huwandu hwemazino eiyo optical frequency dispersion excitation inogona kuwedzerwa nekuwedzera kuwedzera PM-RF simba, uye iyo optical frequency dispersion interval inogona kuwedzerwa nekuwedzera modulation frequency. mufananidzo
Izvo zviri pamusoro zvakavakirwa paLNOI chirongwa, uye chinotevera chinobva pane IIIV chirongwa. Iyo dhizaini yedhizaini ndeyotevera: Iyo chip inobatanidza DBR laser, MZM modulator, PM phase modulator, SOA uye SSC. Imwe chip inogona kuwana yakakwira performance optical frequency kutetepa.

Iyo SMSR yeDBR laser ndeye 35dB, upamhi hwemutsara ndeye 38MHz, uye tuning renji i9nm.

Iyo MZM modulator inoshandiswa kugadzira sideband nehurefu hwe1mm uye bandwidth ye7GHz@3dB chete. Kunyanya kudzikiswa ne impedance mismatch, kurasikirwa kwemaziso kusvika ku20dB@-8B bias.

Iyo SOA kureba ndeye 500µm, iyo inoshandiswa kubhadhara modulation optical musiyano kurasikirwa, uye spectral bandwidth ndeye 62nm@3dB@90mA. Iyo yakabatanidzwa SSC pane inobuda inovandudza kubatanidza kweiyo chip (kubatanidza kunyatsoshanda i5dB). Simba rekupedzisira rekubuda rinenge −7dBm.

Kuti ugadzire optical frequency dispersion, iyo RF modulation frequency inoshandiswa ndeye 2.6GHz, simba iri 24.7dBm, uye Vpi yechikamu modulator i5V. Nhamba iri pazasi ndiyo inokonzeresa photophobic spectrum ine 17 photophobic mazino @10dB uye SNSR yakakwirira kupfuura 30dB.

Chirongwa chacho chakagadzirirwa 5G microwave transmission, uye nhamba inotevera chikamu che spectrum chinowanikwa nechiedza chechiedza, chinogona kubudisa zviratidzo zve 26G ne 10 nguva yakawanda. Hazvina kutaurwa pano.

Muchidimbu, iyo optical frequency inogadzirwa neiyi nzira ine yakagadzikana frequency interval, yakaderera chikamu ruzha, simba rakakura uye nyore kusanganisa, asi kune zvakare akati wandei matambudziko. Chiratidzo cheRF chakaremerwa paPM chinoda simba rakakura, mashandisiro makuru emagetsi, uye nguva yenguva inogumira nechiyero chemodulation, kusvika pa50GHz, inoda yakakura wavelength interval (kazhinji> 10nm) muFR8 system. Kushandiswa kushoma, simba flatness harisati rakwana.