Kodi mungasankhe bwanji pakati pa modulator ya gawo la 780nm ndi modulator yamphamvu?

Momwe mungasankhire pakati pa 780nmmodulator ya gawondi modulator ya mphamvu?
Mu mafunde ofunikira a 780nm, kuyanjana pakati pa kuwala ndi zinthu n'kolemera kwambiri - kaya ndi kusintha kwa D2 line ya maatomu a cesium kapena kusintha kwa quantum state kwa maatomu a rubidium, kuwongolera molondola kwa laser mu mafunde otere ndikofunikira kwambiri. Chipangizo chachikulu chomwe chimakwaniritsa izi ndi electro-optic modulator (Chosinthira cha EOMPakati pawo, ngakhale kuti onse awirimodulator ya gawo la electro-opticndi electro-opticmodulator ya mphamvuAli m'gulu la lithiamu niobate electro-optic modulation, ali ndi luso lawo lapadera ndipo amachita ntchito zawo.
Modulator ya gawo la Electro optic, monga momwe dzinalo likusonyezera, imayang'ana kwambiri pakuwongolera molondola kwa gawo la zizindikiro za kuwala. Kapangidwe kake ndi kosavuta - waveguide imodzi imagwirizanitsidwa ndi ma electrode awiri mbali zonse ziwiri, ndipo index ya refractive ya kristalo imasinthidwa kudzera mu electro-optic effect, motero kusintha gawo la mafunde owala. ROF-PM series 780nm phase modulator imagwiritsa ntchito ukadaulo wapamwamba wa proton exchange ndipo ili ndi makhalidwe abwino kwambiri monga kutayika kochepa kwa insertion (mtengo wamba wa 2.8dB), bandwidth yayikulu yosinthira (10GHz), ndi voltage yotsika ya theka la mafunde (mtengo wamba wa 2.0V). Imagwira ntchito makamaka m'magawo a machitidwe olumikizirana a space optical, cesium atomic time reference, spectral broadening, ndi interferometry - mu mawotchi optical ndi muyeso wolondola, ma modulators a gawo ndi "ngwazi zakumbuyo kwa zochitika" za kutseka pafupipafupi ndi kukhazikika.
Themodulator ya mphamvu ya electro-opticIli ndi udindo wowongolera mphamvu (amplitude) ya kuwala. Imachokera ku kapangidwe ka Mach Zehnder interferometer (MZI): chizindikiro cha kuwala chimagawidwa m'njira ziwiri, zomwe zimadutsa mu phase modulation kenako n’kubwereranso, zomwe zimapangitsa kuti mphamvu isinthe kudzera mu zotsatira zosokoneza. ROF-AM-07 series intensity modulator imagwiritsanso ntchito ukadaulo wa proton exchange, ndi kutayika kwa insertion kochepera 3dB, chiŵerengero cha switch extinction cha mpaka 23dB, ndi voliyumu yanthawi zonse ya theka la mafunde ya 3V yokha kumapeto kwa RF. Ntchito zake zachizolowezi zimaphatikizapo kulumikizana kwa space optical, quantum optics, pulse generators, ndi madera ena - mu kuyesa kwa quantum information, intensity modulators nthawi zambiri amagwiritsidwa ntchito "kudula" ma lasers opitilira kukhala ma nanosecond level optical pulses.
Tinganene kuti gawo modulator ndi wojambula amene amakonza bwino gawo la mafunde a kuwala, pomwe intensity modulator ndi mtsogoleri amene amalamulira mphamvu ya kuwala mosavuta. Awiriwa amathandizana, onse akuthandiza ulusi wopangidwa mwamakonda wa FC/PC ndi FC/APC, ndi ntchito yokhazikika pa kutentha kwakukulu kwa -10 ℃ ~ 60 ℃, kuphimba njira zingapo zoyesera za kuwala kuyambira mawotchi oyambira a atomiki mpaka ma quantum optics apamwamba, kupereka njira yolumikizirana ya optical modulation ya kafukufuku wa gulu la 780nm.