Kusintha modulator yachikhalidwe ya LiNbO3

Kusokoneza chikhalidweLiNbO3 modulator
Posachedwapa, gulu lofufuza ku China latulutsa patent yopangidwa mwaluso yaukadaulo wotseka ma frequency pogwiritsa ntchito LiNbO3 modulator. Pakati pa patent iyi ndi njira yatsopano yotsekera ma frequency a laser ya PDH (Pound Driver Hall) yomwe imaphwanya njira zachikhalidwe.
1. Zinthu zopweteka zaukadaulo wachikhalidwe:
Makina otsekera pafupipafupi a PDH nthawi zambiri amagwiritsa ntchito lithiamu niobate (LiNbO3)modulator yamagetsikupanga ma sideband ofunikira a kuwala. Njirayi ili ndi mavuto atatu akuluakulu: mtengo wokwera komanso kapangidwe kovuta (kofunikira ma RF driver circuits ovuta), kukhudzidwa ndi chilengedwe (kusintha kwa kutentha ndi kupsinjika kumatha kuyambitsa magwiridwe antchito osakhazikika), ndi zotsatira zotsalira za amplitude modulation (RAM), zomwe zingayambitse kusuntha kwa chizindikiro cha loko ndikukhudza kwambiri kukhazikika kwa dongosolo kwa nthawi yayitali.
2. Mayankho atsopano:
Magulu ofufuza aku China asiya kwathunthu modulator yachikhalidwe ya electro-optic. Chinthu chachikulu chomwe chimapangitsa kuti pakhale njira yogwirira ntchito limodzi ya "semiconductor optical amplifier (SOA amplifier) ​​yophatikizidwa ndi dual channel acousto-optic frequency shifter (AOM modulator)". Mfundo yeniyeni ndi iyi: pambuyo pogawanitsa kuwala kwa laser, awiriAOM modulatoramagwiritsidwa ntchito posintha ma frequency molondola, kenako kuwala kuwiriku kumalowetsedwa mu SOA amplifier mu gain saturation state. Kupanga bwino chizindikiro cha multi sideband chofunikira pakutseka ma frequency a PDH pogwiritsa ntchito zotsatira zosalunjika monga four wave mixing (FWM) mkati mwaChokulitsa cha SOA.
3. Ubwino wa magwiridwe antchito omwe amabwera chifukwa cha:
Kukhazikika Kwambiri: Zipangizo za SOA (monga kulongedza gulugufe) zimagwirizanitsidwa ndi kutentha ndipo sizimakhudzidwa ndi kusokonezeka kwa chilengedwe, zomwe zimachotsa bwino zotsatira za RAM kuchokera ku makina enieni ndikupangitsa kuti zikhale zolondola kwambiri kwa nthawi yayitali (kuposa 5 × 10 ⁻¹¹/tsiku).
Chiŵerengero chapamwamba cha chizindikiro-kwa-phokoso: Mwa kuwongolera payokha kusintha kwa ma frequency a dual AOM modulator, n'zotheka kukwaniritsa kufanana kolondola pakati pa sideband frequency ndi free spectral range (FSR) ya reference cavity, motero kumawongolera kwambiri chiŵerengero cha chizindikiro-kwa-phokoso cha chizindikiro cholakwika.
Kuchepetsa ndalama ndi kuchepetsa mphamvu yamagetsi: SOA amplifier imachotsa ma modulators okwera mtengo a electro-optic ndi ma circuits ovuta, zomwe zimafuna kuyendetsa kwamagetsi kosavuta. Izi zimapangitsa kuti makinawa akhale ochepa komanso otchipa, zomwe zimathandiza kuti zidazo zichepetse mphamvu yamagetsi komanso zikhale zothandiza.
4. Kuthekera kwa kugwiritsa ntchito ndi kufunika kwa msika:
Ukadaulo uwu umakwaniritsa bwino kufunikira kwakukulu kwa magwero okhazikika a laser pakupanga ukadaulo wa quantum, ndipo uli ndi mwayi wogwiritsa ntchito kwambiri, kuphatikizapo:
Wotchi yowala yoyikidwa m'malo ndi m'galimoto (iyenera kukana kugwedezeka kwambiri).
Quantum gravimeter ndi cold atomu interferometer (yogwiritsidwa ntchito pofufuza za geology ndi kuyenda pansi pa madzi).
Kuzindikira kwapamwamba kwa fiber optic ndi LiDAR.
Msika wamakono, makamaka m'magawo a kafukufuku wa sayansi, makampani ankhondo, ndi ndege zamalonda, pali kuwonjezeka kwakukulu kwa kufunikira kwa ma module a laser okhazikika pawokha, otsika mtengo, komanso okhazikika kwambiri ochokera kumakampani. Ukadaulo uwu wokhala ndi patent ukuwonetsa bwino momwe msika ukugwirira ntchito.