Optical phased array technology yog ib hom tshiab ntawm beam deflection tswj technology, uas muaj qhov zoo ntawm kev yooj, kev kub ceev thiab siab precision.

Tam sim no, feem ntau kev tshawb fawb yog nyob rau ntawm qhov kho qhov muag phased array ntawm cov kua siv lead ua kua, kho qhov muag waveguide, thiab microelectromechanicalsystem (MEMS). Qhov peb coj los rau koj niaj hnub no yog cov ntsiab lus cuam tshuam ntawm optical phased array ntawm optical waveguide.

Lub optical waveguide phased array tsuas yog siv cov nyhuv electro-optical lossis thermo-optical nyhuv ntawm cov khoom siv dielectric kom lub teeb beam deflect tom qab dhau los ntawm cov khoom.

Kho qhov muag Wtus qhia Pua Array ua Buas yog Electro-Optic keval Ecuam ​​tshuam

Cov nyhuv electro-optical ntawm cov siv lead ua yog siv cov hluav taws xob sab nraud rau cov siv lead ua, kom cov teeb pom kev zoo dhau los ntawm cov siv lead ua ua rau cov theem qeeb uas cuam tshuam nrog cov hluav taws xob sab nraud. Raws li thawj electro-optical nyhuv ntawm cov siv lead ua, lub sij hawm ncua los ntawm lub teb hluav taws xob yog proportional rau cov ntaub ntawv voltage, thiab lub sij hawm ncua ntawm lub teeb beam dhau los ntawm lub optical waveguide core yuav hloov tau los ntawm kev tswj lub voltage ntawm lub teeb. electrode txheej ntawm txhua qhov kho qhov muag waveguide core. Rau cov phased array ntawm optical waveguides nrog N-txheej waveguide, lub hauv paus ntsiab lus yog qhia nyob rau hauv daim duab 1: lub kis tau tus mob ntawm lub teeb beams nyob rau hauv txhua txhua core txheej tuaj yeem tswj tau ntawm nws tus kheej, thiab nws cov yam ntxwv ntawm lub teeb diffraction lub sijhawm tuaj yeem piav qhia los ntawm grating diffraction txoj kev xav. . Los ntawm kev tswj cov kev siv hluav taws xob ntawm cov txheej txheem tseem ceeb raws li qee txoj cai kom tau txais cov theem sib txawv ntawm qhov sib txawv, peb tuaj yeem tswj tau qhov cuam tshuam kev faib tawm ntawm lub teeb siv nyob deb. Qhov tshwm sim ntawm kev cuam tshuam yog lub teeb ci siab siv lub teeb nyob rau hauv ib qho kev taw qhia, thaum lub teeb nthwv dej tawm los ntawm cov theem tswj hauv lwm cov lus qhia tshem tawm ib leeg, kom paub txog qhov deflection scanning ntawm lub teeb beam.

Fig. 1 Cov ntsiab lus ntawm grating raws li qhov Hluav taws xob-Optical Cov nyhuv ntawm phased array ntawm optical waveguide

Optical Waveguide Phased Array Raws li Thermo-Optical Effect

Crystal’s thermo-optical nyhuv yog hais txog qhov tshwm sim uas siv lead ua molecular kev hloov pauv los ntawm cua sov lossis txias rau cov siv lead ua, uas ua rau cov khoom siv kho qhov muag ntawm cov siv lead ua hloov pauv nrog kev hloov ntawm qhov kub thiab txias. Vim yog lub anisotropy ntawm cov siv lead ua, cov nyhuv thermo-optical muaj ntau yam tshwm sim, uas tej zaum yuav yog qhov kev hloov ntawm lub semi-axis ntev ntawm lub indicatrix, los yog kev hloov ntawm lub optical axis lub kaum sab xis, hloov dua siab tshiab ntawm lub optical axis dav hlau. kev sib hloov ntawm cov indicatrix, thiab lwm yam. Zoo li cov nyhuv electro-optical, cov nyhuv thermo-optical ua rau muaj kev cuam tshuam zoo sib xws ntawm lub deflection ntawm lub nqaj. Los ntawm kev hloov cov cua sov lub zog los hloov qhov zoo refractive Performance index ntawm waveguide, lub kaum sab xis deflection nyob rau hauv lwm txoj kev yuav ua tau tiav. Daim duab 2 yog ib daim duab schematic ntawm qhov kho qhov muag waveguide phased array raws li cov nyhuv thermo-optical. Phaseed array yog non-uniformly teem thiab kev koom ua ke ntawm 300mm CMOS ntaus ntawv kom ua tiav kev ua tau zoo scanning deflection.

Fig. 2 Cov Ntsiab Cai ntawm Phase array ntawm Optical waveguide raws li cov nyhuv Thermo-Optical