Kev siv hluav taws xob polarizationKev tswj hwm yog ua tiav los ntawm kev sau ntawv laser femtosecond thiab kev hloov pauv siv lead ua kua
Cov kws tshawb fawb hauv lub teb chaws Yelemees tau tsim ib txoj kev tshiab ntawm kev tswj cov teeb liab pom kev los ntawm kev sib txuas femtosecond laser sau ntawv thiab kua siv lead ua kuakev hloov kho hluav taws xobLos ntawm kev muab cov kua siv lead ua kua rau hauv lub waveguide, kev tswj hwm electro-optical ntawm lub xeev polarization ntawm lub beam tau pom tseeb. Cov thev naus laus zis qhib cov cib fim tshiab rau cov khoom siv chip thiab cov voj voog photonic nyuaj uas ua los ntawm kev siv femtosecond laser sau ntawv thev naus laus zis. Pab pawg tshawb fawb tau piav qhia txog lawv ua cov phaj nthwv dej tunable hauv fused silicon waveguides li cas. Thaum lub zog hluav taws xob siv rau cov kua siv lead ua kua, cov kua siv lead ua kua tig, uas hloov pauv lub xeev polarization ntawm lub teeb xa mus rau hauv lub waveguide. Hauv cov kev sim ua tiav, cov kws tshawb fawb tau ua tiav qhov kev hloov pauv ntawm lub teeb ntawm ob qhov sib txawv pom wavelengths (Daim Duab 1).
Ua ke ob lub thev naus laus zis tseem ceeb los ua kom tiav kev vam meej tshiab hauv 3D photonic integrated devices
Lub peev xwm ntawm femtosecond lasers los sau cov waveguides kom meej meej hauv cov khoom siv, tsis yog tsuas yog ntawm qhov chaw xwb, ua rau lawv yog ib qho thev naus laus zis zoo uas yuav ua rau muaj ntau cov waveguides ntawm ib lub chip. Cov thev naus laus zis ua haujlwm los ntawm kev tsom mus rau lub teeb laser muaj zog heev hauv cov khoom pob tshab. Thaum lub teeb ci ntsa iab mus txog ib qib twg, lub teeb hloov cov yam ntxwv ntawm cov khoom siv ntawm nws qhov chaw siv, ib yam li tus cwj mem nrog qhov tseeb micron.
Cov pab pawg tshawb fawb tau muab ob txoj kev siv photon yooj yim los muab ib txheej ntawm cov kua siv lead ua kua rau hauv lub waveguide. Thaum lub teeb mus dhau lub waveguide thiab dhau lub kua siv lead ua kua, theem thiab polarization ntawm lub teeb hloov pauv thaum siv lub zog hluav taws xob. Tom qab ntawd, lub teeb modulated yuav txuas ntxiv mus rau qhov thib ob ntawm lub waveguide, yog li ua tiav kev xa cov teeb liab optical nrog cov yam ntxwv modulation. Cov thev naus laus zis sib xyaw ua ke no ua rau muaj qhov zoo ntawm ob qho tib si hauv tib lub cuab yeej: ntawm ib sab tes, qhov ceev ntawm lub teeb concentration coj los ntawm cov nyhuv waveguide, thiab ntawm qhov tod tes, qhov kev hloov kho siab ntawm cov kua siv lead ua kua. Kev tshawb fawb no qhib txoj hauv kev tshiab los siv cov khoom ntawm cov kua siv lead ua kua los muab cov waveguides rau hauv tag nrho cov khoom siv raws licov modulatorsraucov khoom siv photonic.
Daim Duab 1 Cov kws tshawb fawb tau muab cov txheej txheem siv lead ua kua tso rau hauv cov waveguides uas tsim los ntawm kev sau ntawv laser ncaj qha, thiab cov khoom siv sib xyaw ua ke tuaj yeem siv los hloov qhov polarization ntawm lub teeb uas hla dhau cov waveguides.
Daim ntawv thov thiab qhov zoo ntawm cov kua siv lead ua kua hauv femtosecond laser waveguide modulation
Txawm hais tiaskev hloov kho qhov muagHauv femtosecond laser sau ntawv waveguides yav dhau los tau ua tiav los ntawm kev siv cua sov hauv zos rau cov waveguides, hauv kev tshawb fawb no, polarization tau tswj ncaj qha los ntawm kev siv cov kua siv lead ua kua. "Peb txoj hauv kev muaj ntau qhov zoo: kev siv hluav taws xob tsawg dua, lub peev xwm los ua cov waveguides ib leeg, thiab txo qhov cuam tshuam ntawm cov waveguides sib ze," cov kws tshawb fawb sau tseg. Txhawm rau sim qhov ua tau zoo ntawm lub cuab yeej, pab pawg tau txhaj tshuaj laser rau hauv waveguide thiab modulated lub teeb los ntawm kev hloov pauv qhov voltage siv rau txheej kua siv lead ua kua. Cov kev hloov pauv polarization pom ntawm qhov tso zis yog sib xws nrog kev cia siab theoretical. Cov kws tshawb fawb kuj pom tias tom qab cov kua siv lead ua kua tau koom ua ke nrog cov waveguide, cov yam ntxwv modulation ntawm cov kua siv lead ua kua tseem tsis tau hloov pauv. Cov kws tshawb fawb hais tias kev tshawb fawb tsuas yog pov thawj ntawm lub tswv yim, yog li tseem muaj ntau yam haujlwm yuav tsum tau ua ua ntej cov thev naus laus zis tuaj yeem siv rau hauv kev xyaum. Piv txwv li, cov khoom siv tam sim no modulate tag nrho cov waveguides tib yam, yog li pab pawg tab tom ua haujlwm kom ua tiav kev tswj hwm ywj pheej ntawm txhua tus waveguide.
Lub sijhawm tshaj tawm: Tsib Hlis-14-2024