Modulator ea mohato ke eng

Ke eng amodulator ea mohato

Phase modulator ke optical modulator e ka laolang mohato oa lebone la laser. Mefuta e tloaelehileng ea li-modulator tsa phase ke Pockels box-basedli-modulators tsa electro-opticle li-modulator tsa kristale tsa metsi, tse ka boela tsa nka monyetla ka liphetoho tsa index ea thermal fiber refractive kapa liphetoho tsa bolelele, kapa ka ho otlolla ho fetola bolelele. Li-modulator tse fapaneng tsa mekhahlelo li sebelisoa tšimong ea optics e kopantsoeng, moo leseli le fetotsoeng le atang ka waveguide.

Mehaho ea bohlokoa ea li-modulator tsa phase e kenyelletsa: Boholo ba modulation ea phase (e khethollang index ea modulation le matla a lekanyelitsoeng a sideband) e hloka "drive voltage modulation bandwidth" (modulation frequency range),motlakase oa motlakasee ka tatellano ea GHz, 'me sesebelisoa se sebelisang phello ea mocheso kapa lisebelisoa tsa kristale tsa metsi li tlase haholo ho feta lebelo la ts'ebetso la sebaka sa sesebelisoa. Meeli ea radius ea beam ea beam e fetotsoeng Litekanyo tsa kantle tsa sesebelisoa Thepa ena e fapana haholo bakeng sa mefuta e fapaneng ea li-modulator tsa mekhahlelo. Ka hona, li-modulator tse fapaneng li hloka ho sebelisoa lits'ebetsong tse fapaneng tse sebetsang.

Mehlala ea lits'ebetso tsa modulator ea phase e kenyelletsa: Modulator ea phase ho laser resonator ea single-frequency laser e ka sebelisoa bakeng sa tokiso ea wavelength, kapa a active mode-locking (FM mode-locking) ea laser ho beha sekala haeba e na le matla a ho feto-fetoha a itekanetseng, e ka sebelisoa ka laser frequency stabilization mechanism, mohlala, The Peverroll-interface-meter lisebelisoa tsa ho lekanya li-spectral, hangata li sebelisa matšoao a nako le nako. Litekanyo tse ling li hloka li-combs tsa khafetsa, tse fumanoang ka ketsahalo e le 'ngoe ea maqhubu ho modulator ea mohato. Tabeng ena, ho feto-fetoha ha mekhahlelo hangata ho hloka ho ba matla, e le hore u ka fumana lihlopha tse ngata tsa mahlakoreng. Ho transmitter ea data ea optical fiber communication system, modulator ea phase e ka sebelisoa ho khetholla tlhahisoleseling e fetisitsoeng. Ka mohlala, ho sebelisoa mokhoa oa phase-shift keying.