Uyilo lwendlela ye-Optical yoxandei-pulsed lasers
Isishwankathelo soyilo lwendlela ye-Optical
Imowudi yokwenziwa yokwenziwa etshixelwe kabini-ubude obungamaza obude be-soliton resonant thulium-doped ifayibha laser esekwe kulwakhiwo lwesipili seringi yefiber engahambelaniyo.
2. Inkcazo yendlela yokubona
I-double-wavelength dissipative soliton resonant thulium-dopedifayibha laserwamkela uyilo lwesakhiwo somngxunya omile “8″ (Umfanekiso 1).
Inxalenye ekhohlo iyona nto iphambili ye-unidirectional loop, ngelixa i-right part is nonlinear optical fiber loop mirror structure. I-loop ekhohlo i-unidirectional ibandakanya i-bundle splitter, i-2.7m i-thulium-doped fiber optical (SM-TDF-10P130-HE), kunye ne-2 μm ibhendi ye-fiber optical coupler ene-coefficient yokudibanisa ye-90:10. I-Isolator enye exhomekeke kwi-polarization (PDI), i-Polarization Controllers (abalawuli be-Polarization: i-PC), i-0.41m ye-Polarization-maintenance Fiber (PMF). I-nonlinear fibre optic ring mirror structure ngakwesokudla iphunyezwa ngokudibanisa ukukhanya ukusuka kwi-loop ye-unidirectional yasekhohlo ukuya kwi-nonlinear fiber optic ring mirror ngasekunene nge-2 × 2 isakhiwo se-optical coupler kunye ne-coefficient ye-90:10. I-nonlinear optical fiber ring mirror ngakwesokudla ibandakanya i-75-meter-long-optical fiber (SMF-28e) kunye nomlawuli we-polarization. I-75 yemitha ye-fiber optical ye-mode eyodwa isetyenziselwa ukunyusa umphumo ongekho mgca. Apha, i-90:10 i-optical fiber coupler isetyenziselwe ukunyusa umahluko wesigaba esingenamgca phakathi kwe-clockwise kunye ne-counterclockwise propagation. Ubude obupheleleyo besi sakhiwo sobude obubini buziimitha ezingama-89.5. Kolu lungiselelo lovavanyo, ukukhanya kwempompo kuqala kudlula kwisihlanganisi se-beam ukufikelela kwi-fiber optical fiber ephakathi. Emva kwe-thulium-doped optical fiber, i-90: i-coupler ye-10 idibaniswe ukuze ijikeleze i-90% yamandla ngaphakathi kwendawo kwaye ithumele i-10% yamandla ngaphandle kwendawo. Kwangaxeshanye, isihluzi se-birefringent seLyot senziwe ngefiber egcina i-polarization-egcina i-optical ephakathi kwabalawuli ababini bepolarization kunye ne-polarizer, edlala indima ekuhluzeni amaza okukhanya okubonwayo.
3. Ulwazi lwemvelaphi
Okwangoku, zimbini iindlela ezisisiseko zokunyusa amandla e-pulse ye-pulsed lasers. Enye indlela kukunciphisa ngokuthe ngqo imiphumo engabonakaliyo, kubandakanywa ukuthoba amandla aphezulu e-pulses ngeendlela ezahlukeneyo, njengokusebenzisa ulawulo lwe-dispersion for pulses ezoluliweyo, i-oscillator enkulu ye-chirped, kunye ne-beam-splitting pulsed lasers, njl. Indlela ekhankanywe ngasentla inokwandisa ngempumelelo amandla e-pulse yeipulsed laserukuya kumashumi e-nanojoules. I-Dissipative soliton resonance (i-Dissipative soliton resonance: i-DSR) yindlela yokwenza impembelelo ye-rectangular yokuqala ecetywayo ngu-N. Akhmediev et al. ngo-2008. Uphawu lwe-dissipative soliton resonance pulses kukuba, ngelixa ugcina i-amplitude ngokuthe gqolo, ububanzi be-pulse kunye namandla e-non-wave splitting rectangular pulse anda monotonically ngokunyuka kwamandla epompo. Oku, ukuya kuthi ga kwinqanaba elithile, kuqhawula umda wethiyori yesiqhelo ye-soliton kumandla we-pulse enye. I-dissipative soliton resonance inokufezekiswa ngokwakha i-saturated absorption kunye ne-reverse saturated absorption, njenge-nonlinear polarization rotation effect (NPR) kunye ne-nonlinear fiber ring mirror effect (NOLM). Uninzi lweengxelo malunga nokuveliswa kwee-dissipative soliton resonance pulses zisekelwe kwezi ndlela zimbini zokutshixa iindlela.
Ixesha lokuposa: Oct-09-2025