Modulator yemagetsi-optical (EOM) inodzora simba, chikamu uye polarization yemwaranzi welaser nekudzora chiratidzo nemagetsi.
Zviri nyore kwazvomodulator yemagetsi-opticimodulator yechikamuine bhokisi rimwe chete rePockels, apo simba remagetsi (rinoiswa pakristaro neelectrode) rinochinja kunonoka kwechikamu chelaser beam mushure mekunge rapinda mukristaro. Mamiriro epolarization emwaranzi wechiitiko anowanzo fanirwa kufanana neimwe yema optical axes ekristaro kuitira kuti mamiriro epolarization emwaranzi asachinje.
Mune zvimwe zviitiko chete ndiyo inodiwa modulation diki kwazvo (periodic kana aperiodic). Semuenzaniso, EOM inowanzo shandiswa kudzora nekudzikamisa frequency ye resonant ye optical resonators. Ma resonance modulators anowanzo shandiswa mumamiriro ezvinhu apo periodic modulation inodiwa, uye modulation depth yakakura inogona kuwanikwa ne voltage iri pakati nepakati chete. Dzimwe nguva modulation depth yakakura kwazvo, uye sidelobe yakawanda (light comb generator, light comb) inogadzirwa mu spectrum.
Modulator yekuparadzanisa polarization
Zvichienderana nerudzi uye gwara rekristaro isiri yemutsara, pamwe negwara remagetsi chaiwo, kunonoka kwechikamu kune chekuitawo negwara repolarization. Nokudaro, bhokisi rePockels rinogona kuona mawave plates anodzorwa nemagetsi akawanda, uye rinogonawo kushandiswa kugadzirisa mamiriro epolarization. Kune chiedza chekupinda chine polarized linearly (kazhinji paAngle ye45° kubva pa crystal axis), polarization ye output beam inowanzo kuve elliptic, pane kungotenderedzwa neAngle kubva kuchiedza chepakutanga chine polarized linearly.
Modulator yeAmplitude
Kana ikasanganiswa nezvimwe zvinhu zve optical, kunyanya nema polarizer, maPockels boxes anogona kushandiswa kune mamwe marudzi e modulation. Amplitude modulator iri muMufananidzo 2 inoshandisa Pockels box kuchinja polarization state, uye yobva yashandisa polarizer kushandura shanduko mu polarization state kuita shanduko mu amplitude nesimba rechiedza chinotumirwa.
Mamwe mashandisirwo akajairika e electro-optic modulators anosanganisira:
Kugadzirisa simba remwaranzi welaser, semuenzaniso, pakudhinda nelaser, kurekodha data redhijitari nekukurumidza, kana kutaurirana kwemaziso nekukurumidza;
Inoshandiswa mu laser frequency stabilization mechanisms, semuenzaniso, uchishandisa nzira yePound-Drever-Hall;
Q switches mu solid-state lasers (uko EOM inoshandiswa kuvhara laser resonator isati yatanga pulsed radiation);
Kuvhara kwemodhi inoshanda (EOM modulation cavity loss kana phase of round-trip light, nezvimwewo);
Kuchinja mapulse muzvipikiri zvepulse, ma amplifiers emhinduro dzakanaka uye ma laser anotsvedza.
Nguva yekutumira: Gumiguru-11-2023