Kev loj hlob thiab kev lag luam xwm txheej ntawm tunable laser (Pib ob)
Ua hauj lwm hauv paus ntsiab lus ntawmtunable laser
Muaj peb lub hauv paus ntsiab lus rau kev ua tiav laser wavelength tuning.Feem ntautunable laserssiv cov khoom ua haujlwm nrog cov kab dav fluorescent.Cov resonators uas ua rau lub laser muaj tsawg heev poob tsuas yog nyob rau hauv ib tug nqaim wavelength ntau yam.Yog li ntawd, thawj zaug yog hloov lub wavelength ntawm lub laser los ntawm kev hloov lub wavelength coj mus rau qhov tsawg poob cheeb tsam ntawm lub resonator los ntawm ib co ntsiab lus (xws li grating).Qhov thib ob yog hloov lub zog theem ntawm kev hloov pauv ntawm laser los ntawm kev hloov qee qhov kev ntsuas sab nraud (xws li magnetic teb, kub, thiab lwm yam).Qhov thib peb yog siv cov teebmeem nonlinear kom ua tiav wavelength transformation thiab tuning (saib nonlinear optics, stimulated Raman scattering, optical zaus ob npaug, optical parametric oscillation).Cov lasers uas muaj nyob rau hauv thawj hom yog dye lasers, chrysoberyl lasers, xim chaw lasers, tunable high-pressure gas lasers thiab tunable excimer lasers.
Tunable laser los ntawm kev xav ntawm realization technology yog tsuas yog muab faib mus rau hauv: tam sim no tswj technology, kub tswj technology thiab mechanical control technology.
Ntawm lawv, lub tshuab hluav taws xob tswj hluav taws xob yog kom ua tiav lub wavelength tuning los ntawm kev hloov qhov kev txhaj tshuaj tam sim no, nrog rau NS-theem tuning ceev, dav tuning bandwidth, tab sis me me tso zis zog, raws li cov hluav taws xob tswj tshuab feem ntau SG-DBR (sampling grating DBR) thiab GCSR laser (kev pab grating directional coupling rov qab-sampling reflection).Cov cuab yeej tswj qhov kub thiab txias hloov cov zis wavelength ntawm lub laser los ntawm kev hloov cov refractive index ntawm lub laser active cheeb tsam.Cov thev naus laus zis yog qhov yooj yim, tab sis qeeb, thiab tuaj yeem hloov kho nrog qhov dav dav ntawm ob peb nm.Cov tseem ceeb raws li kev tswj qhov kub thiab txias yogDFB laser(Tshaj tawm tswv yim) thiab DBR laser (Distributed Bragg reflection).Kev tswj xyuas tshuab yog tsim los ntawm MEMS (micro-electro-mechanical system) tshuab ua kom tiav cov kev xaiv ntawm wavelength, nrog loj adjustable bandwidth, siab tso zis zog.Cov txheej txheem tseem ceeb raws li kev tswj xyuas tshuab yog DFB (kev tawm tswv yim tawm tswv yim), ECL (cov kab noj hniav sab nraud) thiab VCSEL ( kab noj hniav ntsug nto emitting laser).Cov hauv qab no tau piav qhia los ntawm cov yam ntxwv ntawm lub hauv paus ntsiab lus ntawm tunable lasers.
Daim ntawv thov kev sib txuas lus kho qhov muag
Tunable laser yog ib qho tseem ceeb optoelectronic ntaus ntawv nyob rau hauv ib tug tshiab tiam ntawm ntom wavelength division multiplexing system thiab photon pauv nyob rau hauv tag nrho-optical network.Nws daim ntawv thov ua kom muaj peev xwm, yoog raws thiab scalability ntawm optical fiber ntau kis tau tus mob, thiab tau pom tau hais tias tsis tu ncua los yog quasi-nruam tuning nyob rau hauv ib tug dav wavelength ntau yam.
Cov tuam txhab thiab cov koom haum tshawb fawb thoob plaws ntiaj teb tau koom tes txhawb kev tshawb fawb thiab kev txhim kho ntawm tunable lasers, thiab cov kev vam meej tshiab tau ua nyob rau hauv daim teb no.Qhov kev ua tau zoo ntawm tunable lasers tau txhim kho tas li thiab tus nqi txo qis tas li.Tam sim no, tunable lasers feem ntau muab faib ua ob pawg: semiconductor tunable lasers thiab tunable fiber ntau lasers.
Semiconductor laseryog lub teeb ci tseem ceeb hauv kev sib txuas lus kho qhov muag, uas muaj cov yam ntxwv ntawm qhov me me, lub teeb yuag, kev hloov pauv siab, txuag hluav taws xob, thiab lwm yam, thiab yooj yim rau kev ua tiav ib nti optoelectronic kev koom ua ke nrog lwm yam khoom siv.Nws tuaj yeem muab faib ua tunable faib tawm tswv yim laser, faib Bragg daim iav laser, micromotor system ntsug kab noj hniav nto emitting laser thiab sab nraud kab noj hniav semiconductor laser.
Txoj kev loj hlob ntawm tunable fiber ntau laser raws li ib tug nce nruab nrab thiab kev loj hlob ntawm lub semiconductor laser diode raws li ib tug twj tso kua mis qhov chaw tau zoo heev txhawb txoj kev loj hlob ntawm fiber ntau lasers.Lub laser tunable yog ua raws li 80nm nce bandwidth ntawm doped fiber ntau, thiab cov khoom lim tau ntxiv rau lub voj kom tswj lub lasing wavelength thiab paub qhov wavelength tuning.
Txoj kev loj hlob ntawm tunable semiconductor laser yog heev active nyob rau hauv lub ntiaj teb no, thiab cov kev kawm kuj yog heev ceev ceev.Raws li tunable lasers maj mam mus rau ruaj wavelength lasers nyob rau hauv cov nqe lus ntawm tus nqi thiab kev ua tau zoo, lawv yuav inevitably yuav siv ntau thiab ntau nyob rau hauv kev sib txuas lus systems thiab ua si lub luag hauj lwm tseem ceeb nyob rau hauv lub neej yav tom ntej tag nrho-optical networks.
Kev loj hlob zeem muag
Muaj ntau ntau hom tunable lasers, uas feem ntau yog tsim los ntawm kev qhia ntxiv wavelength tuning mechanisms nyob rau hauv lub hauv paus ntawm ntau yam ib leeg- wavelength lasers, thiab qee cov khoom tau muab nkag rau hauv kev lag luam thoob ntiaj teb.Ntxiv nrog rau kev tsim kho qhov muag tunable lasers tas mus li, tunable lasers nrog kev sib koom ua ke lwm lub luag haujlwm kuj tau tshaj tawm, xws li tunable laser kev koom ua ke nrog ib nti ntawm VCSEL thiab ib qho hluav taws xob nqus modulator, thiab lub laser integrated nrog ib tug qauv grating Bragg reflector. thiab semiconductor optical amplifier thiab hluav taws xob nqus modulator.
Vim hais tias lub wavelength tunable laser yog dav siv, lub tunable laser ntawm ntau yam qauv yuav siv tau rau txawv systems, thiab txhua tus muaj qhov zoo thiab qhov tsis zoo.Sab nraud kab noj hniav semiconductor laser yuav siv tau raws li ib tug wideband tunable lub teeb qhov chaw nyob rau hauv precision xeem ntsuas vim nws siab tso zis hwj chim thiab tas li tunable wavelength.Los ntawm kev xav ntawm photon kev koom ua ke thiab ntsib lub neej yav tom ntej tag nrho-kho qhov muag network, qauv grating DBR, superstructured grating DBR thiab tunable lasers kev koom ua ke nrog modulators thiab amplifiers tej zaum yuav cog lus tunable lub teeb rau Z.
Fiber grating tunable laser nrog rau sab nraud kab noj hniav kuj yog ib hom kev cog lus ntawm lub teeb ci, uas muaj cov qauv yooj yim, nqaim kab dav thiab yooj yim fiber ntau txuas.Yog tias EA modulator tuaj yeem ua ke hauv kab noj hniav, nws kuj tuaj yeem siv los ua qhov kev kub ceev tunable optical soliton qhov chaw.Tsis tas li ntawd, tunable fiber ntau lasers raws li fiber ntau lasers tau ua kom muaj kev vam meej hauv xyoo tas los no.Nws tuaj yeem cia siab tias qhov kev ua tau zoo ntawm tunable lasers hauv qhov chaw sib txuas lus kho qhov muag yuav raug txhim kho ntxiv, thiab kev sib koom ua lag luam yuav maj mam nce ntxiv, nrog rau cov ntawv thov kev cia siab heev.
Post lub sij hawm: Oct-31-2023