Dab tsi yog fiber ntau laser?
Optical fiber luv luv rau optical fiber ntau thiab feem ntau yog cylindrical waveguide rau lub teeb nthwv dej. Nws siv lub hauv paus ntsiab lus ntawm tag nrho cov kev xav kom kaw lub teeb nthwv dej rau cov tub ntxhais thiab coj lawv mus rau qhov kev taw qhia ntawm fiber ntau axis. Hloov tooj liab hlau nrog quartz iav hloov lub ntiaj teb no.
Raws li qhov nruab nrab rau kev ua lub teeb tsis muaj zog, fiber ntau optical tau siv dav txij li xyoo 1966 thaum nws tau qhia los ntawm Charles Kao, ua tsaug rau nws txoj kev sib txuas lus siab, muaj kev cuam tshuam tsis zoo, tsis tshua muaj kev sib kis, kev sib kis ntev, tsis pub leej twg paub, yoog raws, me me. , lub teeb yuag thiab ntau qhov chaw ntawm cov khoom siv raw. Paub tias yog "txiv ntawm fiber ntau optics", Kao tau txais txiaj ntsig Nobel nqi zog hauv Physics hauv 2009 rau nws txoj haujlwm. Nrog rau kev ua kom zoo dua qub thiab kev ua tau zoo ntawm fiber ntau optics, nws tau hloov pauv kev lag luam hauv kev sib txuas lus thiab tau hloov pauv ntau ntawm tooj liab hlau raws li qhov tseem ceeb ntawm kev sib txuas lus niaj hnub no.
Optical fiber kev sib txuas lus yog ib qho kev sib txuas lus uas siv lub teeb raws li cov ntaub ntawv nqa thiab kho qhov muag fiber ntau raws li yoj taw qhia nruab nrab. Thaum kho qhov muag fiber ntau xa cov ntaub ntawv, lub teeb liab hluav taws xob hloov mus rau hauv cov teeb liab optical, uas yog tom qab ntawd xa mus rau hauv cov fiber ntau. Raws li kev sib txuas lus thev naus laus zis tshiab, kev sib txuas lus fiber ntau tau pom tias tsis muaj qhov zoo tshaj plaws txij li thaum pib thiab tau txais kev txaus siab thiab nthuav dav. Kev siv dav ntawm fiber ntau optical hauv kev sib txuas lus kuj tau pab txhawb txoj kev loj hlob sai ntawm fiber ntau optic amplifiers thiab fiber ntau lasers tib lub sijhawm. Ntxiv nrog rau kev sib txuas lus, fiber ntau optic systems kuj tau siv dav hauv kev siv tshuaj, kev paub thiab lwm yam.
Optical fibers
Qhov nruab nrab ntawm fiber ntau laser yog lub active fiber. Raws li nws cov qauv tuaj yeem muab faib ua ib hom fiber ntau, ob-clad fiber ntau thiab photonic siv lead ua fiber ntau peb.
Ib hom kev kho qhov muag fiber ntau ib hom fiber ntau muaj cov tub ntxhais, cladding thiab txheej txheej, qhov twg qhov ntsuas qhov cuam tshuam ntawm cov khoom siv tseem ceeb n1, siab dua li cov khoom siv cladding refractive index n2, thaum qhov teeb meem lub kaum sab xis ntawm qhov teeb meem teeb pom kev zoo siab dua li ntawm lub kaum ntse ntse daim duab, lub teeb beam nyob rau hauv lub cores ntawm tag nrho cov emission, yog li cov fiber ntau yuav khi rau lub teeb beam nyob rau hauv lub core propagation. Lub cladding sab hauv ntawm ib hom fibers tsis tuaj yeem ua lub luag haujlwm txwv tsis pub siv ntau hom twj tso kua mis, thiab cov lej aperture ntawm cov tub ntxhais tsis tshua muaj, yog li tsuas yog ib hom twj tso kua mis lub teeb txuas rau hauv cov tub ntxhais tuaj yeem siv tau kom tau txais cov zis laser. Thaum ntxov fiber ntau lasers siv no ib hom fiber ntau, ua rau tsis tshua muaj coupling efficiency thiab lasers nrog tso zis hwj chim nyob rau hauv milliwatt ntau.
Ob-clad fibers
Yuav kom kov yeej cov kev txwv ntawm cov pa ib hom, ib leeg-clad ytterbium-doped (Yb3 plus) fibers ntawm kev hloov dua siab tshiab thiab tso zis zog, Maurer (R. Maurer) thawj zaug tau npaj lub tswv yim ntawm ob-clad fibers hauv xyoo 1974. Txij thaum ntawd los, nws tsis yog txog 1988, thaum E. Snitzer thiab lwm tus tau thov cladding siv tshuab [3], lub zog siab Yb-doped fiber ntau lasers / amplifiers tau tsim sai heev.
Ob chav-clad fiber yog ib qho khoom siv kho qhov muag nrog cov qauv tshwj xeeb uas ntxiv cov txheej txheej sab hauv rau cov pa fiber ntau, uas muaj txheej txheej txheej, txheej txheej txheej sab hauv, txheej txheej txheej txheej, thiab cov txheej txheem doped fiber ntau. Lub cladding twj siv tshuab yog ua los ntawm ob-clad fiber ntau, lub hauv paus ntawm uas yog tso cai rau lub teeb multimode twj tso kua mis mus rau hauv lub puab cladding thiab laser lub teeb yuav kis tau nyob rau hauv lub tub ntxhais, tso cai rau lub twj tso kua mis conversion efficiency thiab cov zis zog ntawm fiber ntau laser yuav tsum tau zoo heev. Cov qauv ntawm ob-clad fiber ntau, cov duab ntawm sab hauv cladding, thiab lub twj tso kua mis lub teeb coupling txoj kev yog cov yuam sij rau cov tshuab no.
Cov tub ntxhais ntawm ob-clad fiber ntau yog tsim los ntawm silicon dioxide (SiO2) doped nrog tsis tshua muaj-lub ntiaj teb cov ntsiab lus, uas yog ob qho tib si laser nruab nrab thiab kis tau tus mob channel ntawm lub teeb liab laser nyob rau hauv fiber ntau laser, sib xws rau kev ua hauj lwm wavelength. Lub transverse loj (tsawg lub sij hawm ntawm txoj kab uas hla ntawm ib tug pa core) thiab tus naj npawb aperture ntawm lub puab cladding yog ntau loj dua li ntawm cov tub ntxhais, thiab lub refractive index yog me dua li ntawm cov tub ntxhais, uas txwv tsis pub cov propagation ntawm laser lub teeb kiag li. hauv lub hauv paus. Qhov no tsim ib tug loj cross-sectional, loj tus naj npawb aperture optical waveguide ntawm cov tub ntxhais thiab cov txheej cladding, uas tso cai rau cov zauv aperture loj, loj cross-sectional thiab multi-mode siab zog pumped lub teeb yuav tsum tau txuas mus rau hauv lub fiber thiab confined rau kis nyob rau hauv. sab hauv cladding yam tsis muaj diffusion, yooj yim txij nkawm ntawm lub zog siab ceev optical twj tso kua mis. Sab nrauv cladding yog tsim los ntawm cov khoom siv polymer nrog qhov ntsuas me me dua li cov cladding sab hauv; txheej txheej sab nrauv yog txheej tiv thaiv uas muaj cov khoom siv organic. Qhov chaw sib txuas ntawm ob-clad fiber ntau rau lub teeb pom kev zoo yog txiav txim siab los ntawm qhov loj ntawm sab hauv cladding, tsis zoo li cov qauv ib leeg-hom fibers, uas yog txiav txim los ntawm cov tub ntxhais ib leeg. Ntawm qhov tod tes, qhov no txhim kho lub zog sib txuas ua haujlwm ntawm tib neeg fiber ntau laser, tso cai rau lub teeb lub teeb kom dhau los ntawm sab hauv cladding ob peb zaug kom excite doped ions rau laser emission; Ntawm qhov tod tes, qhov tso zis beam zoo yog txiav txim siab los ntawm qhov xwm txheej ntawm cov tub ntxhais fiber ntau, thiab kev taw qhia ntawm lub puab cladding tsis rhuav tshem cov nqaj zoo ntawm fiber ntau laser tso zis.
Thaum pib, sab hauv cladding ntawm ob-clad fibers yog cylindrically symmetrical thiab kuj yooj yim rau fabricate thiab yooj yim rau ob peb mus rau lub pigtail ntawm lub twj tso kua mis laser diode (LD), tab sis nws zoo meej symmetry ua rau ib tug loj tus naj npawb ntawm kauv rays ntawm lub twj tso kua mis lub teeb nyob rau hauv. lub puab cladding uas tsis tau mus txog lub hauv paus cheeb tsam txawm tom qab txaus reflections yuav absorbed los ntawm cov tub ntxhais, thiaj li hais tias txawm nrog ib tug txawm nrog ntev fibers tseem muaj ib tug loj npaum li cas ntawm lub teeb to, ua rau nws nyuaj rau txhim kho conversion efficiency. Vim li no, lub cylindrical symmetry ntawm sab hauv cladding yuav tsum tau tawg.
Photonic siv lead ua fibers
Nyob rau hauv ib txwm ob-clad fibers, geometry ntawm cov tub ntxhais txiav txim siab lub zog laser tso zis. Tus lej aperture txiav txim siab lub teeb zoo ntawm cov zis laser. Vim muaj cov kev txwv ntawm cov teebmeem uas tsis yog-linear, kho qhov muag puas thiab lwm yam kev siv lub cev hauv cov khoom siv kho qhov muag, ib qho kev nce ntawm cov tub ntxhais txoj kab uas hla tsis tuaj yeem ua tau raws li qhov kev thov rau ib hom kev ua haujlwm ntawm cov khoom siv hluav taws xob loj hauv hom loj teb ob chav cladding fibers. Qhov tshwm sim ntawm cov fibers tshwj xeeb, xws li photonic siv lead ua fibers (PCF), muab kev daws teeb meem zoo rau qhov kev sib tw no.
Lub tswv yim ntawm photonic muaju yog thawj zaug los ntawm E. Yablonovitch nyob rau hauv 19871 raws li ib tug periodic qauv nrog txawv dielectric tas li nyob rau hauv ib, ob los yog peb qhov ntev uas tso cai rau lub teeb mus propagate nyob rau hauv lub photonic conduction band thiab txwv tsis pub lub teeb mus propagate nyob rau hauv lub photonic band sib txawv ( PBG). PCFs yog ob-dimensional photonic crystals, tseem hu ua microstructured fibers los yog ntxeem tau fibers, thiab nyob rau hauv 1996 JC Knight li al. tsim thawj PCFs nrog lub teeb-guiding mechanism zoo ib yam li cov pa fibers nrog tag nrho cov kev xav sab hauv. Tom qab xyoo 2005, kev tsim thiab kev npaj ntawm cov hom loj PCFs pib muaj ntau haiv neeg, nrog rau qhov tshwm sim ntawm ntau yam duab, nrog rau cov xaim channel PCFs, pas nrig-shaped PCFs, loj pitch PCFs thiab multi-core PCFs. Hom-field cheeb tsam ntawm fiber ntau kuj tseem nce ntxiv raws li.
Nyob rau hauv tsos, PCFs zoo ib yam li cov pa ib hom fibers, tab sis microscopically lawv nthuav tawm complex qhov-array lug. Nws yog cov yam ntxwv ntawm cov qauv no uas muab PCFs tshwj xeeb thiab tsis muaj txiaj ntsig zoo dua li cov pa fiber ntau, xws li kev txiav tawm-dawb ib hom kev sib kis, thaj chaw loj hom, tunable dispersion thiab tsawg limiting poob, uas muaj peev xwm kov yeej ntau ntawm cov teeb meem ntawm cov pa lasers. . Piv txwv li, PCF tuaj yeem ua tiav ib hom kev ua haujlwm hauv thaj chaw loj hauv cheeb tsam, thaum ua kom cov nqaj zoo, txo qis lub zog laser hauv fiber ntau, txo cov teebmeem tsis-linear hauv fiber ntau thiab ua rau muaj kev puas tsuaj ntawm cov fiber ntau; nws muaj peev xwm ua tau ib tug loj tus lej aperture, uas txhais tau hais tias ntau lub twj tso kua mis optical coupling thiab siab zog laser tso zis yuav ua tau tiav. Qhov no tau ua nws qhov kev tshawb fawb tshiab tseem ceeb hauv fiber ntau lasers, ua lub luag haujlwm tseem ceeb hauv kev siv lub zog fiber ntau lasers.
Lub invention ntawm lub fiber laser
Lasers uas siv fiber ntau optical raws li lub laser nce nruab nrab yog hu ua fiber ntau lasers. Zoo li lwm hom lasers, nws muaj peb ntu: qhov nruab nrab nce, lub twj tso kua mis thiab lub resonant kab noj hniav. fiber ntau lasers siv ib tug active fiber nrog ib tug core doped nrog tsawg lub ntiaj teb ntsiab raws li qhov nruab nrab nce. Ib qho semiconductor laser feem ntau yog siv los ua lub twj tso kua mis. Lub resonant kab noj hniav feem ntau yog tsim los ntawm cov iav tsom iav, fiber ntau qhov chaw, iav fiber ntau iav los yog fiber ntau gratings.
Raws li lub sijhawm sau tus yam ntxwv ntawm fiber ntau laser, nws tuaj yeem muab faib ua fiber ntau laser thiab pulsed fiber ntau laser; Raws li cov qauv resonant kab noj hniav, nws tuaj yeem muab faib ua kab noj hniav fiber ntau laser, faib tawm tswv yim fiber ntau laser thiab nplhaib kab noj hniav fiber ntau laser; Raws li qhov nce fiber ntau thiab cov kev siv sib txawv, nws tuaj yeem muab faib ua ib leeg cladding fiber laser (fiber core pumping) thiab ob chav cladding fiber laser (cladding pumping).
Xyoo 1961, Snitzer nrhiav pom laser hluav taws xob hauv neodymium (Nd)-doped iav waveguides. 1966, Kao tau kawm paub meej txog qhov tseem ceeb ntawm lub teeb attenuation hauv optical fibers thiab taw qhia txog cov teeb meem kev lag luam tseem ceeb uas yuav tsum tau daws rau kev siv tswv yim ntawm optical fibers hauv kev sib txuas lus. Xyoo 1970, Corning hauv Asmeskas tau tsim kho qhov muag fibers nrog attenuation tsawg dua 20 dB / km, uas tau tsim lub hauv paus rau kev txhim kho kev sib txuas lus kho qhov muag thiab kev lag luam optoelectronics. Qhov no tau tsim lub hauv paus rau txoj kev loj hlob ntawm kev sib txuas lus kho qhov muag thiab optoelectronics industries. Hauv xyoo 1970 thiab 1980s, kev loj hlob thiab kev lag luam ntawm semiconductor laser tshuab tau muab cov twj tso kua mis txhim khu kev qha thiab sib txawv rau kev txhim kho fiber ntau lasers. Nyob rau tib lub sijhawm, kev txhim kho cov tshuaj vapor deposition txoj kev ua rau kev sib kis ntawm fiber ntau optic tsis tu ncua txo. Fiber lasers tseem tab tom loj hlob sai nyob rau hauv cov kev taw qhia ntawm ntau haiv neeg, nrog fibers doped nrog ntau yam tsawg lub ntiaj teb hais, xws li erbium (Er3 ntxiv), ytterbium (Yb3 ntxiv), neodymium (Nd3 ntxiv), samarium (Sm 3 ntxiv), Thulium (Tm3 ntxiv), holmium (Ho3 ntxiv), praseodymium (Pr3 ntxiv), dysprosium (Dy3 ntxiv), bismuth (Bi3 ntxiv) thiab lwm yam. Nyob ntawm cov ions doped, qhov sib txawv wavelengths ntawm laser tso zis tuaj yeem ua tiav. Ua kom tau raws li qhov yuav tsum tau ua ntawm cov ntawv thov sib txawv.
Nta ntawm lub zog fiber ntau lasers
Qhov zoo ntawm lub zog siab fiber ntau lasers yog raws li hauv qab no.
(1) Zoo beam zoo. Cov qauv waveguide ntawm optical fiber ntau ua rau nws yooj yim kom tau txais ib qho transverse hom tso zis, thiab cov kev cuam tshuam ntawm lwm yam tseem ceeb yog me me, kom ua tiav lub siab brightness laser tso zis.
(2) High efficiency. Fiber laser los ntawm kev xaiv lub emission wavelength thiab doped tsis tshua muaj lub ntiaj teb ntsiab ntsiab absorption yam ntxwv ntawm lub semiconductor laser rau lub twj tso kua mis qhov chaw, koj muaj peev xwm ua tau ib tug heev lub teeb lub teeb conversion efficiency. Rau ytterbium doped siab zog fiber ntau lasers, feem ntau xaiv 915nm los yog 975nm semiconductor lasers, vim yooj yim zog theem qauv ntawm Yb3 ntxiv, upconversion, zoo siab lub xeev nqus thiab concentration bursts yog tsis tshua muaj tshwm sim, fluorescence lub neej yog ntev dua thiab muaj peev xwm khaws cia zog. rau kev ua haujlwm siab zog. Tag nrho cov electro-optical efficiency ntawm kev lag luam fiber ntau lasers yog siab li 25 feem pua, uas yog conducive rau txo nqi, txuag hluav taws xob thiab kev tiv thaiv ib puag ncig.
(3) Zoo thermal dissipation yam ntxwv. Fiber lasers yog siv raws li ib tug laser nce nruab nrab siv ib tug nyias, tsis tshua muaj lub ntiaj teb caij doped fiber nrog ib tug loj heev deg cheeb tsam rau ntim piv. Txog 1000 npaug ntawm cov khoom thaiv laser, nyob rau hauv cov nqe lus ntawm tshav kub dissipation muaj peev xwm muaj txiaj ntsig zoo. Tsis muaj qhov tshwj xeeb txias ntawm cov fiber ntau yuav tsum tau siv rau cov khoom siv hluav taws xob tsawg thiab nruab nrab, thiab cov dej txias yog siv rau cov teeb meem muaj zog, uas tseem ua tau zoo kom tsis txhob muaj qhov degradation ntawm cov nqaj zoo thiab kev ua haujlwm zoo vim yog thermal cuam tshuam feem ntau pom nyob rau hauv solid-state lasers.
(4) Compact qauv, muaj kev ntseeg siab. Raws li cov fiber ntau laser siv ib qho me me thiab hloov tau yooj yim fiber ntau raws li lub laser nce nruab nrab, nws yuav pab kom compress lub ntim thiab txuag nqi. Lub twj tso kua mis kuj tseem siv rau hauv me me, yooj yim rau modular semiconductor lasers, cov khoom lag luam feem ntau muaj nrog cov zis pigtail, ua ke nrog fiber ntau Bragg grating thiab lwm yam khoom siv fiber ntau, tsuav yog cov khoom siv sib xyaw ua ke kom ua tiav cov fiber ntau, kev tiv thaiv ib puag ncig cuam tshuam, nrog kev ruaj ntseg siab, tuaj yeem txuag lub sijhawm thiab cov nqi.
Lub zog fiber ntau lasers kuj muaj qhov tsis zoo uas nyuaj rau kev kov yeej: ib qho yog qhov tsis zoo rau cov teebmeem tsis-linear. Fiber lasers muaj qhov ntev ntev thiab qhov pib qis rau ntau yam uas tsis yog-linear cuam tshuam vim cov geometry ntawm lawv cov waveguides. Qee qhov teeb meem tsis zoo xws li kev zoo siab Raman tawg (SRS), tus kheej-theem kev hloov pauv (SPM), thiab lwm yam tuaj yeem ua rau theem hloov pauv thiab lub zog hloov pauv ntawm cov spectrum, lossis txawm tias muaj kev puas tsuaj rau lub tshuab laser, txwv txoj kev loj hlob ntawm lub zog fiber ntau. lasers. Qhov thib ob yog photon darkening nyhuv. Nrog rau kev nce hauv lub sijhawm siv, cov nyhuv photon darkening tuaj yeem ua rau siab doping concentration ntawm lub ntiaj teb tsis tshua muaj zog-doped fiber zog hloov dua siab tshiab efficiency monotonically irreversible poob, limiting lub sij hawm ntev stability thiab kev pab cuam lub neej ntawm high-power fiber lasers, uas yog tshwj xeeb tshaj yog pom tseeb. nyob rau hauv ytterbium-doped high-power fiber lasers.
Nrog rau kev nce qib ntawm high brightness fiber ntau-coupled semiconductor lasers thiab ob-clad fiber ntau technology, cov zis zog, optical-rau-optical conversion efficiency thiab beam zoo ntawm high-power fiber lasers tau tsim ho. Nyob rau hauv kev lag luam kev lag luam, qhia lub zog riam phom, ntev-ntau telemetry, LIDAR thiab lwm yam kev siv ntawm loj heev thov traction, mus rau lub tebchaws United States Apache Photonics (IPG Photonics), Nufern (Nufern), Nlight (Nlight) thiab lub teb chaws Yelemees Tong Express Group, mas. kev tshawb fawb units ntawm nruam nthwv dej, mem tes yoj high-power fiber laser kev tshawb fawb thiab kev loj hlob, launched ib tug nplua nuj cov khoom kab. Cov txiaj ntsig zoo siab kuj tau tshaj tawm los ntawm ntau lub tsev hauv Suav teb, suav nrog Tsinghua University, National University of Defense Technology, Shanghai Institute of Optics thiab Precision Machinery ntawm Suav Academy ntawm Kev Tshawb Fawb thiab Plaub Lub Tsev Kawm Ntawv ntawm Tuam Tshoj Aerospace Science thiab. Kev lag luam Corporation.
Fiber laser zog li technology
Vim tias cov teebmeem tsis zoo hauv fiber ntau laser, thermal teebmeem thiab cov khoom siv puas tsuaj rau qhov pib muaj kev txwv, lub zog tso zis ntawm ib lub laser fiber ntau raug txwv rau qee yam, thiab raws li lub zog nce, cov nqaj zoo maj mam txo, yuav tsum tau siv. ntawm kev tswj kev siv tshuab thiab tsim cov qauv tshwj xeeb ntawm cov fiber ntau tshiab los txhim kho cov nqaj zoo. Dawson (JW Dawson) thiab al theoretically txheeb xyuas qhov tso zis hluav taws xob txwv ntawm ib qho fiber ntau thiab suav tias hauv broadband fiber ntau lasers ib leeg fiber ntau tuaj yeem tau txais lub zog siab tshaj plaws ntawm 36 kW nyob ze ntawm qhov kev txwv tsis pub laser tso zis, thaum rau nqaim linewidth fiber ntau lasers, qhov siab tshaj plaws lub zog yog 2 kW. Txhawm rau ntxiv dag zog rau cov zis hluav taws xob ntawm fiber ntau laser thiab amplifier, lub zog tsim hluav taws xob ntawm ntau lub lasers los ntawm coherent synthesis technology yog ib txoj hauv kev zoo. Nws tau dhau los ua qhov kev tshawb fawb thoob ntiaj teb hotspot nyob rau xyoo tas los no.
Coherent synthesis yog ua tiav los ntawm kev tswj cov theem, zaus thiab polarization ntawm txhua lub laser beam nrog ib qho kev sib xws, kom nws ua tau raws li qhov kev sib koom ua ke thiab tau txais cov txiaj ntsig homogeneous-xauv cov zis, uas tuaj yeem tau txais qhov siab tshaj qhov siab tshaj qhov yooj yim uas tsis yog-coherent. superposition thiab tuav zoo beam zoo. Lub keeb kwm ntawm txoj kev loj hlob ntawm coherent synthesis technology yog yuav luag ntev li ntev raws li keeb kwm ntawm lasers lawv tus kheej, thiab koom nrog ntau hom roj lasers, tshuaj lasers, semiconductor lasers, solid-state lasers, thiab lwm yam. Txawm li cas los, vim lub immaturity ntawm ntau yam khoom siv. nyob rau hauv thaum ntxov hnub, cov kev sim tau tiav los ntawm coherent synthesis technology tsis tawg los ntawm lub siab tshaj plaws tso zis hwj chim ntawm tus coj ib leeg-txuas laser nyob rau lub sij hawm ntawd, yog li cov nyhuv tsis pom tseeb heev. Txij xyoo 1990s mus, qhov kev tshwm sim ntawm fiber ntau lasers coj mus rau kev loj hlob sai ntawm coherent synthesis cov tswv yim. Ntxiv rau qhov tshwj xeeb zoo ntawm fiber ntau lasers thiab xav tau kev siv ntau pua kilowatts, ntau yam khoom siv (xws li fiber ntau cone couplers, multi-core fibers, theem modulators nrog pigtails thiab acousto-optical zaus shifters, thiab lwm yam) tau ua si ib Lub luag haujlwm tseem ceeb hauv kev lag luam yob tawm ntawm kev sib txuas lus fiber ntau. Fiber cone couplers thiab multicore fibers pab tswj cov theem passive raws li laser zog txhaj tshuaj coupling thiab swift yoj coupling, thaum lub sij hawm modulators nrog pigtails thiab acousto-optical zaus shifters pab active theem tswj nrog megahertz tswj bandwidths, uas yuav siv tau los tswj cov theem hloov ntawm siab zog tej yam kev mob thiab ua tiav theem-xauv outputs. Cov kws tshawb fawb tau tawm tswv yim ntau qhov sib txawv ntawm cov txheej txheem sib xyaw ua ke.
Spectral synthesis yog cov txheej txheem uas tsis yog-coherent synthesis uas siv ib los yog ntau dua diffraction gratings diffraction ntau subbeams rau tib lub aperture, uas ua rau ib tug tib aperture tso zis nrog zoo beam zoo. Spectral synthesis ntawm fiber ntau lasers tuaj yeem siv tag nrho ntawm qhov nce bandwidth ntawm Yb-doped fiber ntau lasers los them rau qhov tso zis tsawg zog ntawm ib lub laser fiber ntau.
