Optical txoj kev tsim ntawm rectangularpulsed lasers
Txheej txheem cej luam ntawm Optical txoj kev tsim
Ib hom passive-locked dual-wavelength dissipative soliton resonant thulium-doped fiber ntau laser raws li lub nplhaib nonlinear fiber ntau daim iav qauv.
2. Optical txoj kev piav qhia
Dual-wavelength dissipative soliton resonant thulium-dopedfiber ntau lasertxais yuav "8" zoo li kab noj hniav qauv tsim (Daim duab 1).
Sab laug yog lub ntsiab unidirectional voj, thaum sab xis yog ib tug nonlinear optical fiber voj iav qauv. Sab laug unidirectional voj muaj xws li ib pob splitter, ib tug 2.7m thulium-doped optical fiber (SM-TDF-10P130-HE), thiab ib tug 2 μm band optical fiber coupler nrog ib tug coupling coefficient ntawm 90:10. Ib qho polarization-dependent Isolator (PDI), ob lub Polarization Controllers (Polarization controllers: PC), 0.41m Polarization-maintenance Fiber (PMF). Lub nonlinear fiber optic nplhaib iav qauv ntawm sab xis yog ua tiav los ntawm kev sib txuas lub teeb los ntawm sab laug unidirectional voj mus rau nonlinear fiber optic nplhaib iav ntawm sab xis los ntawm 2 × 2 qauv kho qhov muag txuas nrog coefficient ntawm 90: 10. Lub nonlinear optical fiber ntau lub nplhaib iav qauv ntawm sab xis suav nrog 75-meter-ntev-ntev fiber ntau optical (SMF-28e) thiab tus tswj polarization. 75-meter ib hom optical fiber ntau yog siv los txhim kho cov nyhuv nonlinear. Ntawm no, 90: 10 optical fiber ntau txuas yog ua haujlwm los ua kom cov theem tsis sib txawv ntawm kev sib hloov ntawm lub moos thiab qhov sib npaug. Tag nrho qhov ntev ntawm cov qauv no dual-wavelength yog 89.5 meters. Hauv qhov kev sim teeb tsa no, lub teeb lub twj tso kua mis thawj zaug dhau los ntawm cov kab sib txuas kom ncav cuag qhov nce nruab nrab thulium-doped optical fiber. Tom qab cov thulium-doped optical fiber, ib tug 90:10 coupler yog txuas mus rau circulate 90% ntawm lub zog nyob rau hauv lub kab noj hniav thiab xa 10% ntawm lub zog tawm ntawm kab noj hniav. Nyob rau tib lub sijhawm, lub lim dej birefringent Lyot yog tsim los ntawm polarization-tswj fiber ntau nyob nruab nrab ntawm ob lub polarization controllers thiab polarizer, uas ua lub luag haujlwm hauv filtering spectral wavelengths.
3. Keeb kwm kev paub
Tam sim no, muaj ob txoj hauv kev los ua kom lub zog pulse ntawm pulsed lasers. Ib txoj hauv kev yog kom txo qis cov teebmeem uas tsis yog-linear, suav nrog txo qis lub zog siab ntawm pulses los ntawm ntau txoj hauv kev, xws li kev siv cov kev tswj xyuas dispersion rau stretched pulses, giant chirped oscillators, thiab beam-splitting pulsed lasers, thiab lwm yam. Lwm txoj hauv kev yog nrhiav cov txheej txheem tshiab uas tuaj yeem zam ntau dua nonlinear theem tsub zuj zuj, xws li tus kheej-similarity pulses. Txoj kev hais saum toj no tuaj yeem ua tiav lub zog pulse ntawm lubmem tes lasermus rau kaum ntawm nanojoules. Dissipative soliton resonance (Dissipative soliton resonance: DSR) yog ib lub voj voog impulse tsim mechanism thawj zaug los ntawm N. Akhmediev li al. nyob rau hauv 2008. Tus yam ntxwv ntawm dissipative soliton resonance pulses yog hais tias, thaum ua kom lub amplitude tas li, lub mem tes dav thiab lub zog ntawm cov tsis-yoj splitting rectangular mem tes nce monotonically nrog rau qhov nce ntawm lub twj tso kua mis zog. Qhov no, rau ib qho twg, tawg los ntawm kev txwv ntawm cov kev xav ntawm ib txwm soliton ntawm ib leeg-pulse zog. Dissipative soliton resonance tuaj yeem ua tiav los ntawm kev tsim cov khoom nqus dej thiab rov qab saturated absorption, xws li nonlinear polarization rotation effect (NPR) thiab nonlinear fiber ring mirror effect (NOLM). Feem ntau cov lus ceeb toom ntawm tiam ntawm dissipative soliton resonance pulses yog ua raws li ob hom kev kaw haujlwm no.
Post lub sij hawm: Oct-09-2025