Mitundu ya electro-optic modulators ikufotokozedwa mwachidule

Electro-optical modulator (EOM) imayang'anira mphamvu, gawo ndi polarization ya mtengo wa laser poyang'anira chizindikirocho pamagetsi.
Chosavuta kwambiri cha electro-optic modulator ndi gawo lothandizira lomwe lili ndi bokosi limodzi lokha la Pockels, pomwe malo amagetsi (omwe amagwiritsidwa ntchito ku kristalo ndi electrode) amasintha kuchedwa kwa gawo la mtengo wa laser atalowa mu kristalo. Mkhalidwe wa polarization wa mtengo wa zochitika nthawi zambiri umayenera kufanana ndi imodzi mwa nkhwangwa zowala za kristalo kuti polarization ya mtengowo isasinthe.

Nthawi zina kumangofunika kusintha pang'ono (nthawi ndi nthawi kapena aperiodic). Mwachitsanzo, EOM imagwiritsidwa ntchito nthawi zambiri kuwongolera ndikukhazikitsa ma frequency a resonant a optical resonators. Ma resonance modulators nthawi zambiri amagwiritsidwa ntchito munthawi yomwe kusinthasintha kwapang'onopang'ono kumafunika, ndipo kuya kwakukulu kosinthira kumatha kupezeka ndi magetsi oyendetsa okha. Nthawi zina kuya kwa kusinthasintha kumakhala kwakukulu kwambiri, ndipo mbali zambiri za sidelobe (jenereta yopepuka ya chisa, chisa chopepuka) amapangidwa mu sipekitiramu.

Polarization modulator
Malingana ndi mtundu ndi njira ya kristalo yopanda malire, komanso njira yoyendetsera magetsi enieni, kuchedwa kwa gawo kumagwirizananso ndi njira ya polarization. Chifukwa chake, bokosi la Pockels limatha kuwona mafunde oyendetsedwa ndi ma voliyumu angapo, ndipo litha kugwiritsidwanso ntchito kuwongolera polarization. Pazowunikira zolowera mozungulira (nthawi zambiri pa Engle ya 45 ° kuchokera ku kristalo axis), polarization ya mtengo wotulutsa nthawi zambiri imakhala yozungulira, m'malo momangozunguliridwa ndi ngodya kuchokera pakuwala koyambira kozungulira.

Amplitude module
Zikaphatikizidwa ndi zinthu zina zowoneka bwino, makamaka ndi polarizer, mabokosi a Pockels atha kugwiritsidwa ntchito pamitundu ina yosinthira. The matalikidwe modulator mu Chithunzi 2 amagwiritsa Pockels bokosi kusintha polarization boma, ndiyeno amagwiritsa ntchito polarizer kusintha kusintha kwa polarization boma kusintha matalikidwe ndi mphamvu ya kuwala opatsirana.
Zina mwazogwiritsa ntchito ma electro-optic modulators ndi awa:
Kusintha mphamvu ya mtengo wa laser, mwachitsanzo, kusindikiza kwa laser, kujambula kwa data ya digito yothamanga kwambiri, kapena kulumikizana kothamanga kwambiri;
Amagwiritsidwa ntchito pamakina okhazikika a laser frequency, mwachitsanzo, kugwiritsa ntchito njira ya Pound-Drever-Hall;
Q masinthidwe mu ma lasers olimba (komwe EOM amagwiritsidwa ntchito kutseka resonator ya laser isanakwane ma radiation);
Kutsekeka kogwira ntchito (kutayika kwa EOM modulation kapena gawo la kuwala kozungulira, etc.);
Kusintha ma pulse mu osankha ma pulse, ma amplifiers abwino ndi ma laser opendekeka.