Iyo electro-optical modulator (EOM) inodzora simba, chikamu uye polarization yelaser beam nemagetsi kutonga chiratidzo.
Iyo yakapfava electro-optic modulator ichikamu modulator inongori imwe chete Pockels bhokisi, apo munda wemagetsi (unoshandiswa kune crystal ne electrode) inoshandura kunonoka kwechikamu chelaser beam mushure mekunge yapinda mukristaro.Iyo polarization mamiriro echiitiko danda kazhinji inoda kuenderana kune imwe yeaxx axes yekristaro kuitira kuti polarization mamiriro edanda asachinje.
Mune zvimwe zviitiko chete diki diki modulation (periodic kana aperiodic) inodiwa.Semuenzaniso, EOM inowanzoshandiswa kudzora uye kudzikamisa resonant frequency ye optical resonators.Resonance modulators inowanzo shandiswa mumamiriro ezvinhu apo periodic modulation inodiwa, uye yakakura modulation kudzika inogona kuwanikwa neine mwero yekutyaira voltage.Dzimwe nguva kudzika kwemodulation kwakakura kwazvo, uye akawanda sidelobe (light comb jenareta, light comb) anogadzirwa muspectrum.
Polarization modulator
Zvichienderana nemhando uye kutungamira kwekristaro isina mutsara, pamwe nekutungamira kweiyo chaiyo yemagetsi munda, kunonoka kwechikamu kunoenderanawo nekutungamira kwepolarization.Naizvozvo, iyo Pockels bhokisi inogona kuona akawanda-voltage inodzorwa wave mahwendefa, uye inogona zvakare kushandiswa kugadzirisa polarization nyika.Kune mutsara polarized mwenje mwenje (kazhinji paAngle ye45 ° kubva kukristaro axis), iyo polarization yeinobuda danda inowanzoita elliptic, pane kungotenderedzwa neAngle kubva kune yekutanga linearly polarized mwenje.
Amplitude modulator
Kana yakasanganiswa nezvimwe zvinhu zvemaziso, kunyanya nemapolarizer, maPockels mabhokisi anogona kushandiswa kune mamwe marudzi emodulation.Iyo amplitude modulator muFigure 2 inoshandisa Pockels bhokisi kuti ichinje polarization mamiriro, uye ipapo inoshandisa polarizer kushandura shanduko yepolarization state kuita shanduko muamplitude uye simba remwenje unopfuudzwa.
Zvimwe zvinowanzoitika zve electro-optic modulators zvinosanganisira:
Modulating simba relaser danda, semuenzaniso, yekutsikisa laser, yakakwira-yekukurumidza dhijitari data kurekodha, kana yakakwirira-kumhanya yekuona kutaurirana;
Inoshandiswa mu laser frequency stabilization maitiro, semuenzaniso, kushandisa Pound-Drever-Hall nzira;
Q inochinja mune yakasimba-nyika lasers (apo EOM inoshandiswa kuvhara laser resonator isati yapushwa mwaranzi);
Active mode-locking (EOM modulation cavity kurasikirwa kana chikamu chekufamba-rwendo mwenje, nezvimwewo);
Kuchinja pulses mune vanotora pulse, yakanaka mhinduro amplifiers uye tilting lasers.
Nguva yekutumira: Oct-11-2023