Isingeniso esifushane se-laserimoduliubuchwepheshe
I-Laser iyigagasi lozibuthe elinemvamisa ephezulu, ngenxa yokuhambisana kwayo okuhle, njengamaza kagesi endabuko (njengalawo asetshenziswa emsakazweni nakumabonakude), njengegagasi elithwala ukudlulisa ulwazi. Inqubo yokulayisha ulwazi ku-laser ibizwa ngokuthi i-modulation, futhi idivayisi eyenza le nqubo ibizwa ngokuthi i-modulator. Kule nqubo, i-laser isebenza njengesithwali, kuyilapho isignali yefrikhwensi ephansi edlulisela ulwazi ibizwa ngokuthi isignali eshintshiwe.
Ukuguquguquka kwe-Laser kuvame ukuhlukaniswa ngokushintshashintsha kwangaphakathi nokushintshashintsha kwangaphandle ngezindlela ezimbili. Ukushintshashintsha kwangaphakathi: kubhekisela ekuguquguqukeni kwenqubo ye-laser oscillation, okungukuthi, ngokumodela isignali ukuze kushintshwe imingcele ye-oscillation ye-laser, ngaleyo ndlela kuthinte izici zokukhishwa kwe-laser. Kunezindlela ezimbili zokuguquguquka kwangaphakathi: 1. Lawula ngokuqondile ukunikezwa kwamandla okumpompa kwe-laser ukuze ulungise ukuqina kokuphuma kwe-laser. Ngokusebenzisa isignali ukulawula ukunikezwa kwamandla nge-laser, amandla okukhipha i-laser angalawulwa isignali. 2. Izakhi zokuguquguquka zibekwe ku-resonator, futhi izici ezibonakalayo zalezi zakhi zokuguquguquka zilawulwa isignali, bese imingcele ye-resonator iguqulwa ukuze kuzuzwe ukuguquguquka kokuphuma kwe-laser. Inzuzo yokuguquguquka kwangaphakathi ukuthi ukusebenza kahle kwe-modulation kuphezulu, kodwa okubi ukuthi ngenxa yokuthi i-modulator itholakala emgodini, izokwandisa ukulahlekelwa emgodini, inciphise amandla okukhipha, futhi umkhawulokudonsa we-modulator uzophinde ube. kunqunyelwe iphasikhodi ye-resonator. Ukuguqulwa kwangaphandle: kusho ukuthi ngemuva kokwakhiwa kwe-laser, i-modulator ibekwa endleleni yokubona ngaphandle kwe-laser, futhi izici ezibonakalayo ze-modulator zishintshwa ngesignali eshintshiwe, futhi lapho i-laser idlula i-modulator, ipharamitha ethile. kwegagasi lokukhanya kuzoshintshwa. Izinzuzo zokuguquguquka kwangaphandle ukuthi amandla okukhipha i-laser awathinteki futhi umkhawulokudonsa wesilawuli awunqunyelwe yi-passband ye-resonator. Okubi ukuguquguquka okuphansi kokusebenza kahle.
I-laser modulation ingahlukaniswa ibe ukuguquguquka kwe-amplitude, ukuguqulwa kwemvamisa, ukuguquguquka kwesigaba kanye nokuguquguquka kokuqina ngokuya ngezakhiwo zakho zokuguquguquka. I-1, i-amplitude modulation: i-amplitude modulation i-oscillation ukuthi i-amplitude yesithwali iyashintsha ngomthetho wesiginali eshintshiwe. 2, ukuguqulwa kwemvamisa: ukulungisa isignali ukushintsha imvamisa ye-laser oscillation. I-3, ukuguqulwa kwesigaba: ukulinganisa isignali ukushintsha isigaba se-laser oscillation laser.
Imoduli ye-Electro-optical intensity
Umgomo we-electro-optic intensity modulation uwukubona ukuguquguquka kokuqina ngokuya ngesimiso sokuphazanyiswa sokukhanya okukhazimulayo ngokusebenzisa umphumela wekristalu we-electro-optic. Umphumela we-electro-optical we-crystal ubhekisela kwinto yokuthi inkomba ye-refractive ye-crystal ishintsha ngaphansi kwesenzo senkambu kagesi yangaphandle, okuholela ekuhlukeni kwesigaba phakathi kokukhanya okudlula i-crystal ngezindlela ezahlukene ze-polarization, ukuze i-polarization. isimo sokushintsha kokukhanya.
I-Electro-optic phase modulator
Isimiso sokumodelwa kwesigaba se-Electro-optical: I-Engle yesigaba ye-laser oscillation ishintshwa umthetho wokumodela isiginali.
Ngaphezu kokushintshashintsha kwe-electro-optic intensity engenhla kanye nokushintshaniswa kwesigaba se-electro-optic, kunezinhlobo eziningi zamamojula we-laser, njengemodulator eguquguqukayo ye-electro-optic, i-electro-optic traveling wave modulator, i-Kerr electro-optic modulator, i-acousto-optic modulator. , imoduli ye-magnetooptic, imoduli yokuphazamiseka kanye nemoduli yokukhanya kwendawo.
Isikhathi sokuthumela: Aug-26-2024