Ungakhetha kanjani phakathi kwe-780nm phase modulator kanye ne-intensity modulator?

Indlela yokukhetha phakathi kwe-780nmi-modulator yesigabakanye ne-intensity modulator?
Ebangeni elibucayi lamaza okukhanya elingu-780nm, ukusebenzisana phakathi kokukhanya nezinto ezidaliwe kucebile kakhulu - kungakhathaliseki ukuthi ukuguquka komugqa we-D2 wama-athomu e-cesium noma ukuphathwa kwe-quantum state kwama-athomu e-rubidium, ukulawulwa okunembile kwe-laser kuleli banga lamaza okukhanya kubalulekile. Idivayisi eyinhloko efinyelela lo mthetho yi-electro-optic modulator (I-modulator ye-EOMPhakathi kwabo, yize bobabilii-electro-optic phase modulatorkanye ne-electro-optici-modulator yokuqinaBangamalungu omndeni we-lithium niobate electro-optic modulation, banamakhono abo ahlukile futhi benza imisebenzi yabo.
I-Electro optic phase modulator, njengoba igama lisho, igxile ekulawuleni okunembile kwesigaba sezimpawu zokukhanya. Isakhiwo sayo silula kakhulu - i-waveguide eyodwa ihambisana nama-electrode amabili nhlangothi zombili, futhi inkomba yokukhanya kwekristalu ishintshwa ngomphumela we-electro-optic, ngaleyo ndlela ishintsha isigaba segagasi lokukhanya. I-ROF-PM series 780nm phase modulator isebenzisa ubuchwepheshe obuthuthukisiwe bokushintshana kwe-proton futhi inezici ezinhle kakhulu njengokulahlekelwa okuphansi kokufakwa (inani elijwayelekile elingu-2.8dB), i-bandwidth ephezulu yokuguquguquka (10GHz), kanye ne-voltage ephansi yesigamu segagasi (inani elijwayelekile elingu-2.0V). Isebenza kakhulu ezinkambeni zezinhlelo zokuxhumana ze-optical zesikhala, ireferensi yesikhathi se-cesium atomic, ukunwetshwa kwe-spectral, kanye ne-interferometry - kumawashi okukhanya kanye nokulinganisa okunembile, ama-phase modulator “amaqhawe angemuva kwezigcawu” okukhiya imvamisa kanye nokuzinza.
Ii-modulator yokuqina kwe-electro-opticinesibopho sokulawula ubukhulu (amplitude) bokukhanya. Isekelwe esakhiweni se-Mach Zehnder interferometer (MZI): isignali ye-optical ihlukaniswe ngezindlela ezimbili, ezidlula ekuguqulweni kwesigaba bese ziphinde zihlangane, zifinyelele ekuguqulweni kwamandla ngokusebenzisa imiphumela yokuphazamiseka. I-ROF-AM-07 series intensity modulator iphinde isebenzise ubuchwepheshe bokushintshana kwe-proton, ngokulahlekelwa kokufakwa okungaphansi kwe-3dB, isilinganiso sokuphela kwe-switch esingafika ku-23dB, kanye ne-voltage ejwayelekile yesigamu segagasi engu-3V kuphela ekugcineni kwe-RF. Izinhlelo zayo ezijwayelekile zihlanganisa ukuxhumana kwe-space optical, i-quantum optics, ama-pulse generator, kanye nezinye izinkambu - ekuhlolweni kolwazi lwe-quantum, ama-intensity modulators avame ukusetshenziswa "ukusika" ama-laser aqhubekayo abe ama-nanosecond level optical pulses.
Kungashiwo ukuthi i-phase modulator ingumculi olungisa kahle isigaba samagagasi okukhanya, kuyilapho i-intensity modulator ingumlawuli olawula ukuqina kokukhanya kalula. Lezi ezimbili ziyahambisana, zombili zisekela imicu yomsila eyenziwe ngokwezifiso ye-FC/PC kanye ne-FC/APC, ngokusebenza okuzinzile ebangeni lokushisa elibanzi elingu--10 ℃ ~ 60 ℃, elihlanganisa izindlela eziningi zokuhlola ze-optical kusukela kumawashi ayisisekelo e-athomu kuya kuma-quantum optics asezingeni eliphezulu, okuhlinzeka ngesisombululo se-optical modulation esihlanganisiwe socwaningo lwebhendi ye-780nm.