Zatsopano zatsopano mu modulator ya LiNbO3

Zinthu zatsopano zatsopano muLiNbO3 modulator
Posachedwapa, ofufuza aku China atulutsa patent yodziwika bwino yokhudza ukadaulo wa PDH laser frequency locking. Dongosolo lotseka ma frequency la PDH laser lochokera ku nonlinear SOA (Semiconductor Optical Amplifier) ​​kuti apange ma sideband. Patent iyi cholinga chake ndi kuthana ndi mavuto angapo mu dongosolo lakale la PDH (Pound-Drever-Hall) laser frequency locking system chifukwa chogwiritsa ntchito lithiamu niobate (LiNbO3 modulator) ndi zina.modulator yamagetsi.
1. Mavuto akuluakulu a njira yachikhalidwe ndi awa:
1.1 Kapangidwe kokwera mtengo komanso kovuta: Ma modulators achikhalidwe a electro-optic amafuna ma RF driver ovuta komanso ma bias circuits.
1.2 Kukhudzidwa ndi chilengedwe: Kumakhudzidwa ndi kusintha kwa kutentha ndi kupsinjika, komwe kumayambitsa kusakhazikika kwa polarization.
1.3 Zotsatira za Residual amplitude modulation (RAM): Izi zimayambitsa DC bias ya chizindikiro cholakwika, zomwe zimapangitsa kuti malo otsekerera a laser asunthike ndikukhudza kwambiri kukhazikika kwa dongosolo kwa nthawi yayitali.
2. Yankho lamakono lomwe gulu lofufuza lapereka ndi:
Siyani kotheratu makina oyendetsera magetsi amakono ndikugwiritsa ntchito kapangidwe kogwirizana kasemiconductor kuwala amplifier(SOA amplifier) ​​yophatikizidwa ndi ma frequency shifter acousto-optic okhala ndi njira ziwiri. Mfundo yeniyeni yogwirira ntchito ndi iyi: Pambuyo pogawa laser ya mbewu, imasinthidwa pafupipafupi ndi ma frequency shifter awiri okhala ndi njira ziwiri, ndikupanga kusiyana kwa pafupipafupi, kenako njira ziwiri za kuwala zimaphatikizidwa ndikulowetsedwa mu SOA amplifier mu gain saturation state. Pogwiritsa ntchito zotsatira zosalunjika monga four-wave mixing (FWM) yaChokulitsa cha SOA, zizindikiro za mbali zambiri zofunika potseka ma frequency a PDH zimapangidwa bwino.
3. Ukadaulo uwu umabweretsa zabwino zotsatirazi zosokoneza magwiridwe antchito:
3.1 Kuthana ndi vuto la RAM ndikupeza kukhazikika kwa nthawi yayitali: Chipangizo chothandizira cha SOA (nthawi zambiri chimakhala mu phukusi la gulugufe) chimaphatikiza kuwongolera kutentha ndipo sichimakhudzidwa kwambiri ndi kusokonezeka kwa chilengedwe, kupewa vuto la RAM kuchokera ku makina enieni ndikukwaniritsa kulondola kwa kutalika kwa dzenje kuposa 5×10⁻¹¹/tsiku.
3.2 Kufananiza bwino ma sideband, kusintha kwakukulu kwa chiŵerengero cha chizindikiro-mpaka-phokoso: Mwa kuwongolera palokha kuchuluka kwa kusintha kwa ma frequency shifter awiri a dual-path acousto-optic (100 MHz - 200 MHz) ndi ma voltage-controlled oscillators awiri (VCO), nthawi ya ma frequency a ma sideband opangidwa ikhoza kufananizidwa bwino ndi free spectral range (FSR) ya reference cavity, motero kumawongolera kwambiri chiŵerengero cha chizindikiro-mpaka-phokoso cha chizindikiro cholakwika.
3.3 Kuchepetsa ndalama ndi kukonza bwino magwiridwe antchito, zomwe zimathandiza kuti makina azigwira ntchito pang'onopang'ono: Popanda modulator yokwera mtengo ya electro-optic ndi ma circuits ovuta, SOA optical amplifier imangofunika kuyendetsa kwamagetsi kosavuta, zomwe zimapangitsa kuti makina onse azikhala ochepa, otsika mtengo, komanso oyenera kugwiritsa ntchito laser external field applications komanso miniaturization.
3.4 Kufunika kwa ukadaulo uwu ndi komwe kukufunika pamsika:
Mawotchi owonera a m'mlengalenga ndi magalimoto: Makhalidwe ake oletsa kusokonezeka amakwaniritsa bwino zofunikira za malo oyendera ndege ndi magalimoto opanda anthu.
Ma gravimeter a quantum ndi ma interferometer ozizira a atomiki: Angagwiritsidwe ntchito pofufuza za geology molondola komanso kuyenda pansi pa madzi.
Kuzindikira kwapamwamba kwa ulusi ndi radar yolumikizana bwino (LiDAR): Imatha kupereka magwero a kuwala kocheperako komanso kopanda kugwedezeka.
Pansi pa zomwe zikuchitika pakusintha kwachiwiri kwa quantum padziko lonse lapansi komanso kuchepetsa mphamvu ya masensa a quantum, kufunikira kwa msika kwa ma module a laser odzilamulira okha, otsika mtengo, komanso okhazikika a frequency-stabilized laser module kwawonjezeka kwambiri, ndipo ukadaulo wa patent uwu ukugwirizana ndi zomwe zikuchitika pamsika.