Ua li cassemiconductor optical amplifierua tiav amplification?
Tom qab lub advent ntawm era ntawm loj-muaj peev xwm kho qhov muag fiber kev sib txuas lus, optical amplification technology tau tsim sai heev.Optical amplifiersamplify input optical signals raws li stimulated tawg los yog stimulated scattering. Raws li txoj cai ua haujlwm, optical amplifiers tuaj yeem muab faib ua semiconductor optical amplifiers (SOA) thiaboptical fiber ntau amplifiers. Ntawm lawv,semiconductor optical amplifiersyog dav siv nyob rau hauv kev sib txuas lus kho qhov muag los ntawm kev tsim txiaj ntawm qhov zoo ntawm qhov dav nce band, kev sib koom ua ke zoo thiab dav wavelength ntau yam. Lawv muaj xws li active thiab passive cheeb tsam, thiab lub active cheeb tsam yog lub nce cheeb tsam. Thaum lub teeb pom kev zoo dhau los ntawm thaj chaw nquag, nws ua rau cov hluav taws xob poob zog thiab rov qab mus rau hauv av hauv daim ntawv ntawm photons, uas muaj tib lub wavelength raws li lub teeb liab, yog li amplifying lub teeb liab. Lub semiconductor optical amplifier hloov lub semiconductor cab kuj mus rau qhov rov qab particle los ntawm kev tsav tsheb tam sim no, amplifies lub koob txhaj tshuaj lub teeb amplitude, thiab tswj cov yam ntxwv ntawm lub cev ntawm txhaj cov noob teeb xws li polarization, kab dav thiab zaus. Nrog rau qhov nce ntawm kev ua haujlwm tam sim no, cov zis hluav taws xob kho qhov muag kuj nce ntxiv hauv qee qhov kev sib raug zoo.
Tab sis qhov kev loj hlob no tsis yog tsis muaj kev txwv, vim hais tias semiconductor optical amplifiers muaj qhov nce saturation tshwm sim. Qhov tshwm sim qhia tau hais tias thaum lub zog input optical yog qhov tsis tu ncua, qhov nce ntxiv nrog qhov nce ntawm cov kab mob hauv cov kab mob, tab sis thaum cov kab mob sib kis loj heev, qhov nce yuav saturate lossis txawm txo. Thaum lub concentration ntawm cov khoom nqa tawm tas li, cov zis hluav taws xob nce ntxiv nrog qhov nce ntawm lub zog input, tab sis thaum lub zog input optical loj dhau lawm, cov cab kuj tau txais txiaj ntsig los ntawm cov hluav taws xob zoo siab heev, uas ua rau nce saturation lossis poob. Yog vim li cas rau qhov nce saturation tshwm sim yog kev sib cuam tshuam ntawm electrons thiab photons hauv cov khoom siv hauv cheeb tsam. Txawm hais tias cov photons tsim nyob rau hauv qhov nce nruab nrab lossis cov photons sab nraud, tus nqi ntawm cov hluav taws xob tsim hluav taws xob siv cov neeg nqa khoom muaj feem cuam tshuam rau tus nqi uas cov cab kuj ntxiv mus rau qib sib xws hauv lub sijhawm. Ntxiv nrog rau cov hluav taws xob tsim hluav taws xob, cov neeg nqa khoom noj tau txais los ntawm lwm yam kuj hloov pauv, uas cuam tshuam rau qhov nce saturation.
Txij li qhov tseem ceeb tshaj plaws ntawm kev ua haujlwm ntawm semiconductor optical amplifiers yog linear amplification, feem ntau yog kom ua tiav amplification, nws tuaj yeem siv los ua lub zog amplifiers, kab amplifiers thiab preamplifiers hauv kev sib txuas lus. Thaum kawg ntawm kev xa tawm, lub tshuab hluav taws xob semiconductor optical amplifier yog siv los ua lub zog amplifier los txhim kho lub zog tso zis ntawm qhov kawg ntawm qhov system, uas tuaj yeem ua rau kom qhov kev ncua deb ntawm lub cev. Nyob rau hauv cov kab kis tau tus mob, lub semiconductor optical amplifier yuav siv tau raws li ib tug linear relay amplifier, thiaj li hais tias tus kis tau tus mob regenerative relay nrug yuav ncua ntxiv los ntawm leaps thiab ciam teb. Thaum kawg tau txais, semiconductor optical amplifier tuaj yeem siv los ua preamplifier, uas tuaj yeem txhim kho qhov rhiab heev ntawm lub receiver. Qhov nce saturation yam ntxwv ntawm semiconductor optical amplifiers yuav ua rau qhov nce ib me ntsis cuam tshuam nrog cov ntsis yav dhau los. Tus qauv nyhuv ntawm cov channel me me kuj tseem hu ua cross-gain modulation effect. Cov txheej txheem no siv qhov nruab nrab ntawm qhov nruab nrab ntawm kev sib tw tau txais kev hloov pauv ntawm ntau txoj hauv kev thiab qhia txog qhov nruab nrab ntawm kev siv lub zog txuas ntxiv hauv cov txheej txheem los tswj cov nqaj, yog li compress tag nrho qhov nce ntawm lub amplifier. Ces tus ntoo khaub lig-tau modulation nyhuv ntawm cov raws yog txo.
Semiconductor optical amplifiers muaj cov qauv yooj yim, kev sib koom ua ke yooj yim, thiab tuaj yeem ua kom pom cov teeb liab ntawm qhov sib txawv wavelengths, thiab tau siv dav hauv kev koom ua ke ntawm ntau hom lasers. Tam sim no, laser kev koom ua ke thev naus laus zis raws li semiconductor optical amplifiers tseem paub tab, tab sis kev siv zog tseem yuav tsum tau ua hauv peb yam hauv qab no. Ib qho yog los txo qhov kev sib txuas ntawm kev sib txuas nrog cov fiber ntau optical. Qhov teeb meem tseem ceeb ntawm semiconductor optical amplifier yog qhov kev sib txuas nrog cov fiber ntau loj. Txhawm rau txhim kho qhov kev sib txuas ua haujlwm zoo, lub lens tuaj yeem muab ntxiv rau qhov sib txuas kom txo qis qhov kev xav tsis zoo, txhim kho qhov sib luag ntawm cov nqaj, thiab ua tiav kev sib txuas ua haujlwm siab. Qhov thib ob yog los txo cov polarization rhiab heev ntawm semiconductor optical amplifiers. Cov yam ntxwv polarization feem ntau yog hais txog polarization rhiab heev ntawm qhov teeb meem teeb. Yog hais tias lub semiconductor optical amplifier tsis tau ua tshwj xeeb, qhov zoo bandwidth ntawm qhov nce yuav raug txo. Quantum zoo qauv tuaj yeem txhim kho kev ruaj ntseg ntawm semiconductor optical amplifiers. Nws muaj peev xwm kawm tau yooj yim thiab superior quantum zoo qauv los txo cov polarization rhiab heev ntawm semiconductor optical amplifiers. Qhov thib peb yog qhov optimization ntawm cov txheej txheem kev sib xyaw ua ke. Tam sim no, kev sib koom ua ke ntawm semiconductor optical amplifiers thiab lasers yog qhov nyuaj heev thiab cumbersome hauv kev ua haujlwm, uas ua rau poob loj hauv cov teeb liab optical kis tau tus mob thiab cov cuab yeej ntxig poob, thiab tus nqi siab dhau lawm. Yog li ntawd, peb yuav tsum sim ua kom zoo dua cov qauv ntawm kev sib xyaw ua ke thiab txhim kho qhov tseeb ntawm cov khoom siv.
Hauv kev sib txuas lus kho qhov muag, thev naus laus zis kho qhov muag yog ib qho kev txhawb nqa thev naus laus zis, thiab semiconductor optical amplifier technology tab tom txhim kho sai. Tam sim no, kev ua tau zoo ntawm semiconductor optical amplifiers tau txhim kho zoo heev, tshwj xeeb tshaj yog nyob rau hauv kev txhim kho cov tiam tshiab optical technologies xws li wavelength division multiplexing lossis optical switching modes. Nrog rau txoj kev loj hlob ntawm cov ntaub ntawv kev lag luam, lub optical amplification technology haum rau txawv bands thiab txawv daim ntaub ntawv yuav tsum tau qhia, thiab kev loj hlob thiab kev tshawb fawb ntawm cov tshiab technologies yuav inevitably ua rau semiconductor optical amplifier technology txuas ntxiv txhim kho thiab vam meej.
Post lub sij hawm: Feb-25-2025