Cov amplifiers optical hauv thaj chaw ntawm kev sib txuas lus fiber ntau optical
An lub tshuab ua kom pom kev zooyog ib lub cuab yeej uas ua kom cov teeb liab pom kev zoo dua. Hauv kev sib txuas lus fiber ntau, nws feem ntau ua lub luag haujlwm hauv qab no: 1. Txhim kho thiab ua kom lub zog pom kev zoo dua. Los ntawm kev tso lub amplifier optical rau ntawm qhov kawg ntawm lub transmitter optical, lub zog pom kev nkag mus rau hauv fiber tuaj yeem nce ntxiv. 2. Kev ua kom lub zog relay online loj dua, hloov cov Repeaters uas twb muaj lawm hauv cov kab ke sib txuas lus fiber ntau; 3. Kev ua kom lub zog ua ntej: Ua ntej lub photodetector ntawm qhov kawg tau txais, lub teeb liab tsis muaj zog tau ua kom lub zog tau txais zoo dua.
Tam sim no, cov Optical amplifiers uas tau txais yuav hauv kev sib txuas lus fiber ntau feem ntau suav nrog cov hom hauv qab no: 1. Semiconductor optical amplifier (SOA Optical amplifier)/Semiconductor laser amplifier (SLA Optical amplifier); 2. Cov fiber amplifiers uas muaj cov khoom tsis tshua muaj nyob hauv ntiaj teb, xws li cov fiber amplifiers uas muaj cov khoom noj uas muaj cov khoom noj (EDFA Optical amplifier), thiab lwm yam. 3. Cov amplifiers fiber nonlinear, xws li cov amplifiers fiber Raman, thiab lwm yam. Cov hauv qab no yog kev qhia luv luv.
1. Cov khoom siv kho qhov muag semiconductor: Nyob rau hauv cov xwm txheej sib txawv ntawm daim ntawv thov thiab nrog qhov kawg ntawm lub ntsej muag sib txawv, cov lasers semiconductor tuaj yeem tsim ntau hom semiconductor optical amplifiers. Yog tias qhov tam sim no tsav tsheb ntawm lub laser semiconductor qis dua nws qhov txwv, uas yog, tsis muaj laser tsim, lub sijhawm no, lub teeb liab kho qhov muag tau nkag mus rau ib qho kawg. Tsuav yog qhov zaus ntawm lub teeb liab kho qhov muag no nyob ze rau qhov chaw spectral ntawm lub laser, nws yuav raug nthuav dav thiab tso tawm los ntawm lwm qhov kawg. Hom nosemiconductor optical amplifierhu ua Fabry-Perrop hom optical amplifier (FP-SLA). Yog tias lub laser raug biased saum qhov threshold, qhov tsis muaj zog ib hom optical teeb liab nkag los ntawm ib kawg, tsuav yog qhov zaus ntawm lub teeb liab optical no nyob hauv lub spectrum ntawm multimode laser no, lub teeb liab optical yuav raug amplified thiab xauv rau ib hom. Hom optical amplifier no hu ua injaction-locked type amplifier (IL-SLA). Yog tias ob qhov kawg ntawm lub semiconductor laser yog daim iav-coated lossis evaporated nrog ib txheej ntawm anti-reflection zaj duab xis, ua rau nws emissivity me me thiab tsis tuaj yeem tsim Fabry-Perrow resonant cavity, thaum lub teeb liab optical hla dhau lub active waveguide txheej, nws yuav raug amplified thaum mus ncig. Yog li ntawd, hom optical amplifier no hu ua traveling wave type optical amplifier (TW-SLA), thiab nws cov qauv tau qhia hauv daim duab hauv qab no. Vim tias qhov bandwidth ntawm lub amplifier optical wave type travelling yog peb qhov kev txiav txim siab loj dua li ntawm Fabry-Perot hom amplifier, thiab nws cov bandwidth 3dB tuaj yeem ncav cuag 10THz, nws tuaj yeem ua kom cov teeb liab optical ntawm ntau zaus thiab yog lub amplifier optical zoo heev.
2. Lub tshuab ua kom lub zog fiber ntau ntxiv uas muaj cov khoom siv bait-doped: Nws muaj peb ntu: Thawj ntu yog cov fiber ntau ntxiv uas ntev li ntawm ob peb meters mus txog kaum meters. Cov khoom tsis huv no feem ntau yog cov ions tsis tshua muaj av, uas tsim cov khoom siv laser ua kom lub teeb ci ntsa iab; Qhov thib ob yog lub tshuab laser twj tso kua mis, uas muab lub zog ntawm cov wavelengths tsim nyog los ua kom cov ions tsis tshua muaj av doped ua kom lub teeb ci ntsa iab. Qhov thib peb yog lub coupler, uas ua rau lub teeb twj tso kua mis thiab lub teeb liab sib txuas rau hauv cov khoom siv fiber ntau ntxiv uas muaj cov khoom siv fiber ntau ntxiv. Lub hauv paus ntsiab lus ua haujlwm ntawm lub tshuab fiber ntau ntxiv zoo ib yam li lub laser khov kho. Nws ua rau lub xeev faib cov khoom me me rov qab hauv cov khoom siv laser ua kom lub zog thiab tsim cov hluav taws xob txhawb nqa. Txhawm rau tsim kom muaj lub xeev faib cov khoom me me ruaj khov, yuav tsum muaj ntau dua ob qib zog hauv kev hloov pauv optical, feem ntau yog peb-theem thiab plaub-theem systems, nrog rau kev muab lub zog tas mus li los ntawm lub tshuab twj tso kua mis. Yuav kom muab lub zog tau zoo, qhov wavelength ntawm lub twj tso kua mis photon yuav tsum luv dua li ntawm lub laser photon, uas yog, lub zog ntawm lub twj tso kua mis photon yuav tsum loj dua li ntawm lub laser photon. Tsis tas li ntawd xwb, qhov resonant cavity tsim cov lus teb zoo, thiab yog li ntawd lub laser amplifier tuaj yeem tsim tau.
3. Cov amplifiers fiber nonlinear: Ob qho tib si nonlinear fiber amplifiers thiab erbium fiber amplifiers poob rau hauv pawg ntawm fiber amplifiers. Txawm li cas los xij, tus thawj siv cov nyhuv nonlinear ntawm quartz fibers, thaum tus tom kawg siv erbium-doped quartz fibers los ua haujlwm rau cov xov xwm nquag. Cov fiber ntau quartz optical fibers yuav tsim cov teebmeem nonlinear muaj zog nyob rau hauv qhov kev ua ntawm lub teeb twj tso kua mis muaj zog ntawm cov wavelengths tsim nyog, xws li stimulated Raman scattering (SRS), stimulated Brillouin scattering (SBS), thiab plaub-wave mixing effects. Thaum lub teeb liab raug xa mus raws li optical fiber nrog rau lub teeb twj tso kua mis, lub teeb liab tuaj yeem raug amplified. Yog li, lawv tsim cov fiber Raman amplifiers (FRA), Brillouin amplifiers (FBA), thiab parametric amplifiers, tag nrho cov no yog cov fiber amplifiers faib tawm.
Kev xaus lus: Cov kev taw qhia dav dav ntawm txhua lub amplifiers optical yog qhov nce siab, lub zog tso zis siab, thiab lub suab qis.
Lub sijhawm tshaj tawm: Tsib Hlis-08-2025