Intshayelelo emfutshane yelaserimodyuliiteknoloji
I-Laser yi-high-frequency electromagnetic wave, ngenxa yokuhambelana kwayo kakuhle, njengamaza emveli ombane wombane (afana nalawo asetyenziswa kunomathotholo nakumabonakude), njengeliza elithwala ukuhambisa ulwazi. Inkqubo yokulayisha ulwazi kwilaser ibizwa ngokuba yimodulation, kwaye isixhobo esenza le nkqubo kuthiwa yimodyuli. Kule nkqubo, i-laser isebenza njenge-carrier, ngelixa i-low-frequency signal ehambisa ulwazi ibizwa ngokuba yi-modulated signal.
Ukumodareyitha kweLaser kudla ngokuhlulwa kumodareyitha yangaphakathi kunye nohlengahlengiso lwangaphandle ngeendlela ezimbini. Ukumodareyitha kwangaphakathi: kubhekiselele kwimodyuli kwinkqubo ye-laser oscillation, oko kukuthi, ngokumodareyitha isiginali yokutshintsha iiparamitha ze-oscillation yelaser, ngaloo ndlela ichaphazela iimpawu zokuphuma kwelaser. Kukho iindlela ezimbini zokumodareyitha kwangaphakathi: 1. Ukulawula ngokuthe ngqo ukunikezelwa kwamandla okupompa kwe-laser ukulungelelanisa ubuninzi bemveliso ye-laser. Ngokusebenzisa umqondiso ukulawula ukunikezelwa kwamandla e-laser, amandla okukhutshwa kwe-laser anokulawulwa ngumqondiso. 2. Izinto zokumodareyitha zifakwe kwi-resonator, kwaye iimpawu ezibonakalayo zezi zinto zokumodareyitha zilawulwa ngumqondiso, kwaye iiparitha ze-resonator zitshintshwa ukufezekisa ukumodareyitha kwemveliso ye-laser. Inzuzo yokumodareyitha kwangaphakathi kukuba ukusebenza kakuhle kokumodareyitha kuphezulu, kodwa ukungonakali kukuba ngenxa yokuba imodareyitha ibekwe kumngxunya, iya kwandisa ilahleko kumgodi, inciphise amandla okuphuma, kunye ne-bandwidth yemodyuli nayo iya kuba. ithintelwe yipasiband yeresonator. Ukumodareyitha kwangaphandle: kuthetha ukuba emva kokwenziwa kwelaser, imodyuli ibekwe kwindlela yokubona ngaphandle kwelaser, kwaye iimpawu zomzimba zemodyuli zitshintshwa ngophawu olumodareyithiweyo, kwaye xa i-laser idlula kwimodyuli, iparameter ethile. Ilanga lokukhanya liya kumodareyithwa. Iingenelo zokumodareyitha kwangaphandle kukuba amandla aphumayo e-laser awachaphazeleki kwaye i-bandwidth yomlawuli ayikhawulelwanga yi-passband ye-resonator. Okungalunganga kukusebenza kokumodareyitha okuphantsi.
Ukumodareyitha kweLaser kunokohlulwa kube yimodude yeamplitude, ukumodareyithwa kwamaza, ukumodareyitha kwesigaba kunye nokumodareyitha kokuqina ngokweempawu zayo zokumodareyitha. I-1, i-amplitude modulation: i-amplitude modulation yi-oscillation ukuba i-amplitude ye-carrier iyatshintsha kunye nomthetho wesignali eguquliweyo. 2, ukumodareyitha rhoqo: ukulungelelanisa umqondiso ukutshintsha ukuphindaphinda kwe-laser oscillation. I-3, ukumodareyitha kwesigaba: ukumodareyitha umqondiso ukutshintsha isigaba se-laser oscillation laser.
Imodyuli ye-Electro-optical intensity
Umgaqo we-electro-optic intensity modulation kukuqonda ukumodareyitha kokuqina ngokomgaqo wokuphazamiseka wokukhanya kwepolarized ngokusebenzisa i-electro-optic effect ye-crystal. Umphumo we-electro-optical we-crystal ubhekisela kwinto yokuba isalathisi se-refractive se-crystal sitshintsha phantsi kwesenzo sentsimi yombane yangaphandle, okubangelwa ukuhlukana kwesigaba phakathi kokukhanya okudlula i-crystal kwiindlela ezahlukeneyo ze-polarization, ukwenzela ukuba i-polarization. imeko yokutshintsha kokukhanya.
Imodyuli yesigaba se-Electro-optic
Umgaqo wokumodareyitha kwesigaba se-Electro-optical: isigaba se-Angle ye-laser oscillation sitshintshwa ngumgaqo wokumodareyitha umqondiso.
Ukongeza koku ngasentla kwe-electro-optic intensity modulation kunye ne-electro-optic phase modulation, zininzi iintlobo zeemodyuli ze-laser, ezinje ngemodyuli eguquguqukayo ye-electro-optic, imodyuli ejikelezayo ye-electro-optic, imodyuli ye-Kerr electro-optic, imodyuli ye-acousto-optic. , imodyuli yemagnetooptic, imodyuli yokuphazamiseka kunye nemodyuli yokukhanya yendawo.
Ixesha lokuposa: Aug-26-2024