Ua li cassemiconductor optical amplifierua kom muaj zog ntxiv?
Tom qab lub sijhawm ntawm kev sib txuas lus fiber ntau loj, kev siv tshuab optical amplification tau tsim kho sai.Cov khoom siv kho qhov muagua kom cov teeb liab teeb liab raws li kev tawg hluav taws xob lossis kev tawg hluav taws xob. Raws li lub hauv paus ntsiab lus ua haujlwm, cov amplifiers kho qhov muag tuaj yeem faib ua semiconductor optical amplifiers (SOA) thiabcov khoom siv fiber ntau optical. Ntawm lawv,cov khoom siv hluav taws xob semiconductor opticalsiv dav hauv kev sib txuas lus optical vim yog qhov zoo ntawm qhov dav gain band, kev sib koom ua ke zoo thiab ntau qhov wavelength. Lawv yog tsim los ntawm cov cheeb tsam nquag thiab passive, thiab thaj chaw nquag yog thaj chaw nce. Thaum lub teeb liab hla dhau thaj chaw nquag, nws ua rau cov electrons poob zog thiab rov qab mus rau hauv av hauv daim ntawv ntawm photons, uas muaj tib lub wavelength li lub teeb liab, yog li ua kom lub teeb liab loj dua. Lub semiconductor optical amplifier hloov lub semiconductor carrier mus rau hauv lub particle rov qab los ntawm kev tsav tsheb tam sim no, ua kom lub teeb noob txhaj tshuaj loj dua, thiab tswj cov yam ntxwv ntawm lub cev ntawm lub teeb noob txhaj tshuaj xws li polarization, kab dav thiab zaus. Nrog rau kev nce ntawm qhov tam sim no ua haujlwm, lub zog optical tso zis kuj nce ntxiv hauv qee qhov kev sib raug zoo.
Tab sis qhov kev loj hlob no tsis yog tsis muaj kev txwv, vim tias semiconductor optical amplifiers muaj qhov tshwm sim ntawm qhov nce saturation. Qhov tshwm sim qhia tau hais tias thaum lub zog optical nkag mus tas li, qhov nce ntxiv nrog rau qhov nce ntawm cov tshuaj txhaj tshuaj, tab sis thaum qhov concentration ntawm cov tshuaj txhaj tshuaj loj dhau, qhov nce yuav saturate lossis txawm tias txo qis. Thaum qhov concentration ntawm cov tshuaj txhaj tshuaj tas li, lub zog tso zis nce nrog rau qhov nce ntawm lub zog nkag, tab sis thaum lub zog optical nkag mus loj dhau, tus nqi siv cov tshuaj los ntawm kev tawg hluav taws xob zoo siab loj dhau, ua rau muaj kev nce saturation lossis poob qis. Qhov laj thawj rau qhov tshwm sim ntawm qhov nce saturation yog kev sib cuam tshuam ntawm electrons thiab photons hauv cov khoom siv hauv cheeb tsam nquag. Txawm hais tias cov photons tsim nyob rau hauv qhov nruab nrab nce lossis cov photons sab nraud, tus nqi uas cov hluav taws xob txhawb nqa noj cov tshuaj muaj feem cuam tshuam nrog tus nqi uas cov tshuaj rov ua kom tiav rau qib zog sib xws hauv lub sijhawm. Ntxiv nrog rau cov hluav taws xob txhawb nqa, tus nqi nqa khoom noj los ntawm lwm yam kuj hloov pauv, uas cuam tshuam tsis zoo rau qhov nce saturation.
Vim tias qhov tseem ceeb tshaj plaws ntawm cov semiconductor optical amplifiers yog linear amplification, feem ntau yog kom ua tiav amplification, nws tuaj yeem siv ua lub zog amplifiers, kab amplifiers thiab preamplifiers hauv cov kab ke sib txuas lus. Ntawm qhov kawg ntawm kev xa xov, lub semiconductor optical amplifier siv ua lub zog amplifier los txhim kho lub zog tso zis ntawm qhov kawg ntawm kev xa xov ntawm lub cev, uas tuaj yeem ua rau qhov deb ntawm relay ntawm lub cev. Hauv kab xa xov, lub semiconductor optical amplifier tuaj yeem siv ua linear relay amplifier, yog li qhov deb ntawm kev xa xov rov qab tuaj yeem txuas ntxiv dua los ntawm leaps thiab ciam teb. Ntawm qhov kawg ntawm kev txais, lub semiconductor optical amplifier tuaj yeem siv ua preamplifier, uas tuaj yeem txhim kho qhov rhiab heev ntawm tus txais. Cov yam ntxwv ntawm qhov nce ntawm cov semiconductor optical amplifiers yuav ua rau qhov nce ib ntsis cuam tshuam nrog cov kab ke dhau los. Cov qauv cuam tshuam ntawm cov channel me me kuj tseem tuaj yeem hu ua cross-gain modulation effect. Cov txheej txheem no siv qhov nruab nrab ntawm cross-gain modulation effect ntawm ntau cov channel thiab qhia txog qhov nruab nrab intensity continuous wave hauv cov txheej txheem los tswj lub beam, yog li compress tag nrho qhov nce ntawm lub amplifier. Tom qab ntawd qhov cuam tshuam ntawm cross-gain modulation ntawm cov channel raug txo qis.
Cov amplifiers optical semiconductor muaj cov qauv yooj yim, yooj yim koom ua ke, thiab tuaj yeem ua kom cov teeb liab optical ntawm ntau qhov wavelengths sib txawv, thiab siv dav hauv kev koom ua ke ntawm ntau hom lasers. Tam sim no, cov thev naus laus zis laser koom ua ke raws li semiconductor optical amplifiers tseem loj hlob, tab sis tseem yuav tsum tau ua rau peb yam hauv qab no. Ib qho yog txo qhov poob coupling nrog cov fiber optical. Qhov teeb meem tseem ceeb ntawm semiconductor optical amplifier yog tias qhov poob coupling nrog cov fiber yog loj. Txhawm rau txhim kho qhov kev ua haujlwm ntawm coupling, lub lens tuaj yeem ntxiv rau hauv lub kaw lus coupling kom txo qhov poob reflection, txhim kho qhov symmetry ntawm lub beam, thiab ua tiav kev sib txuas ua haujlwm siab. Qhov thib ob yog txo qhov kev nkag siab polarization ntawm semiconductor optical amplifiers. Tus yam ntxwv polarization feem ntau yog hais txog qhov kev nkag siab polarization ntawm lub teeb pom kev. Yog tias lub semiconductor optical amplifier tsis tau ua tiav tshwj xeeb, qhov bandwidth zoo ntawm qhov nce yuav raug txo qis. Cov qauv quantum zoo tuaj yeem txhim kho qhov ruaj khov ntawm semiconductor optical amplifiers. Nws yog qhov ua tau los kawm txog cov qauv quantum zoo yooj yim thiab zoo dua los txo qhov kev nkag siab polarization ntawm semiconductor optical amplifiers. Qhov thib peb yog qhov kev ua kom zoo dua ntawm cov txheej txheem sib xyaw. Tam sim no, kev koom ua ke ntawm semiconductor optical amplifiers thiab lasers yog qhov nyuaj thiab cumbersome hauv kev ua cov txheej txheem, ua rau muaj kev poob loj hauv kev xa cov teeb liab optical thiab kev poob ntawm cov khoom siv, thiab tus nqi siab dhau. Yog li ntawd, peb yuav tsum sim ua kom zoo dua cov qauv ntawm cov khoom siv sib xyaw ua ke thiab txhim kho qhov tseeb ntawm cov khoom siv.
Hauv kev siv tshuab sib txuas lus optical, kev siv tshuab optical amplification yog ib qho ntawm cov thev naus laus zis txhawb nqa, thiab semiconductor optical amplifier technology tab tom tsim kho sai. Tam sim no, kev ua tau zoo ntawm semiconductor optical amplifiers tau zoo dua, tshwj xeeb tshaj yog hauv kev tsim cov thev naus laus zis optical tshiab xws li wavelength division multiplexing lossis optical switching modes. Nrog rau kev txhim kho ntawm kev lag luam cov ntaub ntawv, kev siv tshuab optical amplification uas haum rau ntau hom bands thiab ntau daim ntawv thov yuav raug qhia, thiab kev txhim kho thiab kev tshawb fawb ntawm cov thev naus laus zis tshiab yuav ua rau semiconductor optical amplifier technology txuas ntxiv mus tsim kho thiab vam meej.
Lub sijhawm tshaj tawm: Lub Ob Hlis-25-2025