Txheej txheem cej luam ntawm plaub tus lej sib txawv

Txheej txheem cej luam ntawm plaub tus lej sib txawv

Daim ntawv no qhia txog kev sib tw ua plaub (hloov lub laser laser laser hauv cov nanosecond lub sijhawm sau) uas feem ntau siv hauv fiber ntau laser tshuab. Cov no suav nrog AOM (acousto-optic kev kho mob), EOM (Electro-Optic Kev Kho Mob), Som /Soa(semiconductor Lub teeb pom kev zoo tseem hu ua semiconductor tawm tsam), thiabDirect ConculationCov. Ntawm lawv, AOM,Yam tseem ceeb, Tsib zwm rau sab nraud kev hloov kho, lossis kev ua haujlwm tsis ncaj.

1. Acousto-Optic Modulator (AOM)

Acousto-optic kev hloov kho yog lub cev nqaij daim tawv uas siv cov txiaj ntsig acoussto-optic kom thauj cov ntaub ntawv rau hauv cov ntawv kho muag. Thaum modulating, lub teeb liab hluav taws xob (qhov hluav taws xob teeb tsa (ua tiav modulation) yog thawj zaug thov rau Electro-Acoustic Transdal rau hauv cov duab hluav taws xob hauv kev ua haujlwm ultrasonic. Thaum lub teeb nthwv dej hla dhau ntawm cov acousto-optic nruab nrab, cov cab kuj kho qhov muag tau hloov kho thiab dhau los ua cov ntaub ntawv pov tseg nrog cov ntaub ntawv hauv acousto-optic ua

2. Electro-Optical Modulator(EOM)

Ib qho khoom siv hluav taws xob hluav taws xob yog tus qauv uas siv cov khoom siv hluav taws xob hluav taws xob, xws li muaj cov muaju lithium niobate (lithium tantalate muaju (lita03). Lub tshuab hluav taws xob tawm yog tias thaum lub voltage yog thaum lub voltage yog thov rau lub teeb ci crystal, ua rau cov kev hloov pauv nthwv dej ntawm lub lead ua cov cystal, thiab kev hloov kho ntawm theem, Kev siv, kev siv thiab polarization xeev ntawm lub teeb liab kho qhov muag tau pom tau.

Daim duab: Qhov raug teeb tsa ntawm Eom Tsav Tsheb Circuit Court

3. Semiconductor kho qhov muag hloov / semiconductor kho qhov muag tshaj plaws (som / so)

Semiconductor kho qhov muag tshaj plaws (soa) feem ntau yog siv rau kev siv hluav taws xob, thiab lwm yam.Erbium-doped fiber ntau). A semiconductor kho qhov muag (SOM) yog qhov zoo ib yam li kev siv kho qhov muag tshiab, tab sis txoj kev siv tau sib txawv me ntsis, thiab cov ntsuas nws tsom rau thaum nws siv ua a Lub teeb modulator yog me ntsis sib txawv ntawm cov neeg siv raws li lub suab nrov. Thaum siv rau lub teeb liab liab lub zog, ib feem ruaj khov tam sim no feem ntau yog muab rau SOA los xyuas kom meej tias SOA ua haujlwm hauv thaj chaw linear; Thaum nws tau siv los kho qhov muag pulses, nws tawm tswv yim hloov kho qhov muag rau SOA tsav tam sim no, thiab tom qab ntawd tswj cov so tawm ntawm lub xeev yog cov amplification lub xeev raws li kev daws teeb meem / atrenuation. Siv cov qauv kev ua kom sov thiab ua raws li cov qauv, xws li cov ntawv thov siv kho qhov muag tshiab, Lidar, Oct kev ua haujlwm ua haujlwm thiab lwm thaj chaw. Tshwj xeeb tshaj yog rau qee qhov xwm txheej uas yuav tsum muaj cov ntim siab loj, kev siv hluav taws xob thiab kev sib piv.

4 Nws tuaj yeem pom tau tias muaj qhov ntsia hlau loj thaum pib ntawm cov mem tes, uas tau coj los ntawm kev so ntawm cov khoom siv laser. Yog tias koj xav tau ib lub mem tes ntawm 100 picoseconds, koj tuaj yeem siv cov ntsia hlau loj no. Tab sis feem ntau peb tsis xav kom muaj qhov ntsia hlau loj.

Suav

AOM haum rau lub zog hluav taws xob tawm hauv ob peb watts thiab muaj kev hloov ua haujlwm ntau zaus. Eom tab tom nrawm, tab sis tus tsav nyuaj yog qhov siab thiab lub sijhawm extinction tsawg. Som (soa) yog cov kev daws teeb meem zoo tshaj plaws rau Ghz kev sib piv thiab siab extinction piv, nrog cov hluav taws xob tsawg, miniaturization thiab lwm yam. Direct DIODES yog cov tshuaj pheej yig tshaj plaws, tab sis paub txog kev hloov pauv ntawm cov yam ntxwv muaj teeb meem. Txhua lub phiaj xwm kev kho mob muaj nws tus kheej zoo thiab qhov tsis zoo, thiab nws yog qhov zoo ntawm cov phiaj xwm, thiab xaiv cov txheej txheem uas haum tshaj plaws. Piv txwv li, hauv kev faib cov fiber ntau cov kev pom zoo, cov tsoos ib txwm muaj, kev siv SOA cov qauv siv SOOM ceev, kev tsim qauv tshiab hauv kev txiav txim siab Txo tus nqi, txo qhov loj me, thiab txhim kho cov qauv excination, cov phiaj xwm soa yog saws. Hauv kev sib txuas lus, lub zog qis feem ntau yog kev kawm ncaj qha cov qauv ntsuas hluav taws xob coj ncaj qha, thiab cov kev kub ceev feem ntau siv lub tshuab hluav taws xob hluav taws xob.