Dab tsi yog asemiconductor optical amplifier
Lub semiconductor optical amplifier yog ib hom optical amplifier uas siv semiconductor nce nruab nrab. Nws zoo ib yam li laser diode, nyob rau hauv uas daim iav nyob rau hauv qis kawg yog hloov nrog ib tug semi-reflective txheej. Lub teeb liab teeb liab kis tau los ntawm semiconductor ib hom waveguide. Lub transverse dimension ntawm lub waveguide yog 1-2 micrometers thiab nws ntev yog nyob rau hauv qhov kev txiav txim ntawm 0.5-2 hli. Lub waveguide hom muaj ib qho tseem ceeb sib tshooj nrog lub active (amplification) cheeb tsam, uas yog pumped los ntawm tam sim no. Qhov kev txhaj tshuaj tam sim no ua rau muaj qee qhov kev sib txuam hauv cov kab hluav taws xob conduction, tso cai rau kev hloov kho qhov muag ntawm cov kab hluav taws xob mus rau valence band. Qhov nce siab tshaj plaws tshwm sim thaum lub zog photon me ntsis siab dua lub zog bandgap. SOA optical amplifier feem ntau yog siv hauv kev sib txuas lus hauv daim ntawv ntawm pigtails, nrog kev ua haujlwm wavelength nyob ib ncig ntawm 1300nm lossis 1500nm, muab kwv yees li 30dB ntawm qhov nce.
CovSOA semiconductor optical amplifieryog PN junction ntaus ntawv nrog cov qauv quantum zoo. Lub sab nraud rau pem hauv ntej thim rov qab tus naj npawb ntawm dielectric hais. Tom qab lub teeb excitation sab nraud nkag mus, cov hluav taws xob tsim hluav taws xob tau tsim tawm, ua tiav cov amplification ntawm optical signals. Tag nrho cov saum toj no peb lub zog hloov cov txheej txheem muaj nyob rau hauvSOA optical amplifier. Lub amplification ntawm optical signals yog raws li stimulated emission. Cov txheej txheem absorbed thiab stimulated emission muaj ib txhij. Lub zog nqus nqus ntawm lub twj tso kua mis lub teeb tuaj yeem siv los ua kom lub zog rov qab los ntawm cov neeg nqa khoom, thiab tib lub sijhawm, lub twj tso kua mis hluav taws xob tuaj yeem xa hluav taws xob mus rau qib siab zog (conduction band). Thaum spontaneous radiation yog amplified, nws yuav tsim amplified spontaneous radiation suab nrov. SOA optical amplifier yog raws li semiconductor chips.
Semiconductor chips yog tsim los ntawm cov khoom siv semiconductors, xws li GaAs / AlGaAs, InP / AlGaAs, InP / InGaAsP thiab InP / InAlGaAs, thiab lwm yam. Cov no kuj yog cov khoom siv los ua semiconductor lasers. Lub waveguide tsim ntawm SOA yog tib yam li lossis zoo ib yam li cov lasers. Qhov txawv yog nyob rau hauv hais tias lasers yuav tsum tau tsim ib tug resonant kab noj hniav nyob ib ncig ntawm lub nce nruab nrab los tsim thiab tswj lub oscillation ntawm lub optical teeb liab. Lub teeb liab kho qhov muag yuav tau nthuav dav ntau zaus hauv kab noj hniav ua ntej tso tawm. HauvSOA amplifier(dab tsi peb tab tom tham ntawm no tsuas yog txwv rau kev mus ncig yoj amplifiers siv nyob rau hauv feem ntau daim ntawv thov), lub teeb tsuas yog yuav tsum dhau los ntawm qhov nce nruab nrab ib zaug, thiab qhov rov qab xav tau tsawg heev. Cov qauv SOA amplifier muaj peb thaj chaw: Area P, Area I (active txheej lossis node), thiab Area N. Cov txheej txheem nquag feem ntau yog tsim los ntawm quantum Wells, uas tuaj yeem txhim kho qhov kev hloov pauv ntawm photoelectric thiab txo qhov pib tam sim no.
Daim duab 1 Fiber laser nrog kev sib xyaw SOA rau kev tsim kho qhov muag pulses
Siv rau kev hloov pauv channel
SOAs feem ntau tsis yog tsuas yog siv rau kev nthuav dav: lawv kuj tuaj yeem siv rau hauv kev sib txuas lus fiber ntau optical, kev siv raws li cov txheej txheem tsis zoo xws li saturation nce lossis hla-theem polarization, uas siv cov kev sib txawv ntawm cov cab kuj concentration hauv SOA optical amplifier kom tau txais qhov sib txawv refractive indices. Cov teebmeem no tuaj yeem siv rau kev hloov pauv ntawm cov channel (wavelength hloov dua siab tshiab), hloov pauv hom hloov pauv, moos rov qab, teeb tsa rov tsim dua tshiab thiab paub cov qauv, thiab lwm yam hauv wavelength division multiplexing systems.
Nrog rau kev nce qib ntawm optoelectronic integrated circuit technology thiab txo cov nqi tsim khoom, daim ntawv thov teb ntawm SOA semiconductor optical amplifier ua cov amplifiers yooj yim, cov khoom siv kho qhov muag thiab cov khoom siv hluav taws xob yuav txuas ntxiv mus ntxiv.
Post lub sij hawm: Jun-23-2025