Ukuguqula okwendabukoI-modulator ye-LiNbO3
Muva nje, ithimba locwaningo eShayina lishicilele ilungelo lobunikazi lokusungula ubuchwepheshe bokukhiya imvamisa ye-laser kusetshenziswa i-modulator ye-LiNbO3. Ingqikithi yelungelo lobunikazi uhlelo olusha lokukhiya imvamisa ye-laser lwe-PDH (Pound Driver Hall) oluguqula izindlela zendabuko.
1. Amaphuzu obuhlungu obuchwepheshe bendabuko:
Izinhlelo zokukhiya imvamisa ze-PDH zendabuko zivame ukusebenzisa i-lithium niobate (LiNbO3)i-electro-optic modulatorukukhiqiza amabhande aseceleni abonakalayo adingekayo. Le ndlela inezinkinga ezintathu eziyinhloko: izindleko eziphezulu kanye nesakhiwo esiyinkimbinkimbi (esidinga amasekethe omshayeli we-RF ayinkimbinkimbi), ukuzwela emvelweni (izinguquko zokushisa kanye nokucindezeleka zingaholela kalula ekusebenzeni okungazinzile), kanye nemiphumela ye-residual amplitude modulation (RAM), engabangela ukuzulazula kwesignali yokukhiya futhi ithinte kakhulu ukuzinza kwesikhathi eside kwesistimu.
2. Izixazululo ezintsha:
Amaqembu ocwaningo aseShayina ayishiyile ngokuphelele i-modulator yendabuko ye-electro-optic. Ukuqamba okusha okuyinhloko kusekuklanyweni ngokubambisana kwe-"semiconductor optical amplifier (i-SOA amplifier) ehlanganiswe ne-dual channel acousto-optic frequency shifter (i-AOM modulator)". Isimiso esiqondile sithi: ngemva kokuhlukanisa i-seed laser beam, ezimbiliI-modulator ye-AOMzisetshenziselwa ukushintshashintsha imvamisa ngendlela enembile, bese kuthi le misebe emibili yokukhanya ifakwe ku-amplifier ye-SOA esimweni sokugcwala kwe-gain. Khiqiza kahle isignali ye-multi sideband edingekayo ekukhiyeni imvamisa ye-PDH ngokusebenzisa imiphumela engeyona eqondile njengokuxuba amagagasi amane (i-FWM) ngaphakathiIsikhulisi se-SOA.
3. Izinzuzo zokusebenza ezilethwa yi:
Ukuzinza okuphelele: Amadivayisi e-SOA (njengokupakishwa kwe-butterfly) ahlanganiswe nokulawulwa kokushisa futhi awazweli ekuphazamisekeni kwemvelo, aqeda ngempumelelo imiphumela ye-RAM kusuka emshinini obonakalayo futhi afinyelele ukukhiya kwesikhathi eside okunembile kakhulu (kungcono kune-5 × 10 ⁻¹¹/ngosuku).
Isilinganiso esiphezulu sesignali kuya kumsindo: Ngokulawula ngokuzimela ukushintsha kwemvamisa ye-modulator ye-AOM ephindwe kabili, kungenzeka ukufeza ukufana okunembile phakathi kwemvamisa ye-sideband kanye ne-free spectral range (FSR) yesikhala sokubhekisela, ngaleyo ndlela kuthuthukiswe kakhulu isilinganiso sesignali kuya kumsindo sesignali yephutha.
Ukunciphisa izindleko kanye nokunciphisa ijubane: I-amplifier ye-SOA isusa ama-modulators e-electro-optic abizayo kanye namasekethe ayinkimbinkimbi, okudinga ukushayela kwamanje okulula kuphela. Lokhu kwenza uhlelo lube luncane futhi lube nezindleko eziphansi, okusiza ekufezeni ukunciphisa ijubane nokusebenza kahle kwemishini.
4. Amathemba okusebenzisa kanye nesidingo semakethe:
Lobu buchwepheshe buhlangabezana ngqo nesidingo esikhulu semithombo ye-laser eqinile kakhulu ekuthuthukisweni kobuchwepheshe be-quantum, futhi bunamathuba amaningi okusetshenziswa, okuhlanganisa:
Iwashi lokukhanya elifakwe esikhaleni kanye nemoto (kumele limelane nokudlidliza okukhulu).
I-Quantum gravimeter kanye ne-cold atom interferometer (esetshenziselwa ukuhlola i-geological kanye nokuzulazula ngaphansi kwamanzi).
Ukuzwa kwe-fiber optic okuthuthukisiwe kanye ne-LiDAR.
Emakethe yamanje, ikakhulukazi emikhakheni yocwaningo lwesayensi, imboni yezempi, kanye nezindiza zezentengiselwano, kukhona ukwanda okukhulu kwesidingo samamojula e-laser azinzile, angabizi kakhulu, futhi azinzile kakhulu avela emabhizinisini. Lobu buchwepheshe obunelungelo lobunikazi bubamba ngokunembile lo mkhuba wemakethe.
Isikhathi sokuthunyelwe: Juni-04-2026