Modulator ya Acousto-optic: Ikoreshwa mu makabati ya atome ikonje

Modulator y'amajwi n'amajwi: Gukoresha mu makabati y'atomu akonje

Nk'igice cy'ingenzi cy'urusobe rwa laser rwa fibre yose mu kabati k'atome ikonje,modulator ya fibre optique acousto-opticIzatanga laser ifite imbaraga nyinshi kandi ihamye ku kabati k'atome ikonje. Atome zizafata fotoni zifite umurongo ugororotse wa v1. Kubera ko imbaraga za fotoni na atome zinyuranyije, umuvuduko wa atome uzagabanuka nyuma yo gufata fotoni, bityo bikagera ku ntego yo gukonjesha atome. Atome zikonjeshwa na laser, hamwe n'inyungu zazo nko kumara igihe kirekire zishakisha, gukuraho imihindagurikire ya Doppler n'ihindagurika rya frequency riterwa no kugongana, hamwe no guhuza buhoro k'urumuri rwo gutahura, binongera cyane ubushobozi bwo gupima neza spectra za atome kandi bishobora gukoreshwa cyane mu masaha akonje ya atome, interferometer za atome ikonje, no kugenda kwa atome ikonje, n'ibindi bice.

Imbere muri modulator ya fibre optique AOM acousto-optic ahanini igizwe na crystal ya acousto-optic na collimator ya fibre optique, nibindi. Ikimenyetso cyahinduwe gikora kuri transducer ya piezoelectric mu buryo bw'ikimenyetso cy'amashanyarazi (guhindura amplitude, modulation ya phase cyangwa modulation ya frequency). Mu guhindura imiterere y'injira nko guhindagurika n'ubunini bw'ikimenyetso cyahinduwe, frequency na amplitude ya laser yinjiye igerwaho. Transducer ya piezoelectric ihindura ibimenyetso by'amashanyarazi mo ibimenyetso bya ultrasonic bitandukanye mu buryo bumwe bitewe n'ingaruka za piezoelectric kandi ikabisakaza muri acousto-optic medium. Nyuma y'uko index ya refractive ya acousto-optic medium ihinduka rimwe na rimwe, hakorwa grating ya refractive index. Iyo laser inyuze muri fiber collimator ikinjira muri acousto-optic medium, diffraction ibaho. Inshuro y'urumuri rwa diffract ishyira frequency ya ultrasonic kuri frequency ya laser yinjiye ya mbere. Hindura aho collimator ya fiber optique iherereye kugira ngo modulator ya fiber optique acoust-optic ikore neza. Muri iki gihe, inguni y'urumuri rw'impanuka igomba kuba ijyanye n'imiterere ya Bragg diffraction, kandi uburyo bwo gukwirakwiza bugomba kuba Bragg diffraction. Muri iki gihe, hafi ya ingufu zose z'urumuri rw'impanuka zijyanwa ku rumuri rwa mbere rutanga umusaruro.

Modulator ya mbere ya AOM acouto-optic ikoreshwa ku mpera y'imbere ya amplifier ya optique ya sisitemu, ihindura urumuri rukomeza kwinjira ruturutse ku mpera y'imbere hamwe n'ama-pulse y'optique. Ama-pulse y'optique yahinduwe hanyuma yinjira muri module ya optique amplification ya sisitemu kugira ngo yongere ingufu. Iya kabiriModulator ya AOM acouto-optiqueikoreshwa inyuma ya amplifier y'amajwi, kandi akazi kayo ni ugutandukanya urusaku rw'ibanze rw'ikimenyetso cya optique pulse cyongerewe na sisitemu. Impande z'imbere n'inyuma z'amajwi y'urumuri asohoka na modulator ya mbere ya AOM acouto-optic zikwirakwizwa mu buryo bungana. Nyuma yo kwinjira muri amplifier y'amajwi, bitewe nuko amplifier y'inkombe y'amajwi y'amajwi ari hejuru kuruta iyo ku nkombe y'amajwi y'amajwi, amajwi y'urumuri yiyongereye azagaragaza ikintu cyo guhindagurika kw'imiterere y'amajwi aho ingufu ziba zihurijwe ku nkombe y'amajwi, nk'uko bigaragara ku Ishusho ya 3. Kugira ngo sisitemu ishobore kubona amajwi y'amajwi afite uburinganire ku nkombe z'imbere n'inyuma, modulator ya mbere ya AOM acouto-optic igomba gukoresha uburyo bwa analog modulation. Igice cyo kugenzura sisitemu gihindura inkombe y'amajwi y'amajwi y'amajwi ya mbere ya AOM acouto-optic kugira ngo cyongere inkombe y'amajwi ...

Amplifaya y'urumuri rw'urumuri ntabwo yongera gusa ibimenyetso by'ingirakamaro by'urumuri rw'urumuri, ahubwo inanongera urusaku rw'ibanze rw'urukurikirane rw'urumuri rw'urumuri. Kugira ngo ugere ku gipimo cyo hejuru cy'urumuri rw'urumuri, imiterere y'urumuri rw ...Modulator ya AOMikoreshwa mu gukumira urusaku rw'ibanze ku mpera y'inyuma ya amplifier, igenzura ko impuzandengo z'ibimenyetso bya sisitemu zishobora kunyura neza ku rugero runini mu gihe ibuza urusaku rw'ibanze kwinjira muri acousto-optic shutter y'igihe (igihe-domain pulse gate). Uburyo bwo guhinduranya impuzandengo bwa digitale burakoreshwa, kandi ikimenyetso cya TTL ni cyo gikoreshwa mu kugenzura uburyo module ya acoust-optic ifunguka n'isohoka ryayo kugira ngo harebwe ko inkombe y'izamuka ry'ingufu z'igihe-domain ya module ya acoust-optic ari yo ntambwe yagenwe yo kuzamuka kw'ibicuruzwa (ni ukuvuga igihe gito cyo kuzamuka icyo ibicuruzwa bishobora kubona), kandi ubugari bw'impuzandengo bushingiye ku bugari bw'ingufu z'ikimenyetso cya sisitemu ya TTL.