Eo Modulator Series: imiyoboro ya fibre izenguruka mu ikoranabuhanga rya laser

"Impeta y'urukiramende" ni iki? Ni iki uzi kuri yo?

Ibisobanuro: Impeta y'urumuri rw'amatara ishobora kunyuramo inshuro nyinshi

Impeta y'urukiramende ikora ku buryo bwa "cyclic fibre perg" niigikoresho cya fibre optiqueaho urumuri rushobora kuzenguruka inshuro nyinshi. Rukoreshwa cyane cyane muri sisitemu y'itumanaho rya fibre optique ikora kure. Nubwo haba hari uburebure bungana nafibre y'urumuri, urumuri rw'ikimenyetso rushobora koherezwa mu ntera ndende cyane binyuze mu kuzunguruka inshuro nyinshi. Ibi bifasha kwiga ingaruka mbi n'uburyo urumuri rudakwirakwira mu kirere bigira ingaruka ku bwiza bw'urumuri rw'ikimenyetso.

Mu ikoranabuhanga rya laser, imiyoboro ya fibre igenda yizunguruka ishobora gukoreshwa mu gupima ubugari bw'umurongolaser, cyane cyane iyo ubugari bw'umurongo ari buto cyane (<1kHz). Iyi ni inyongera y'uburyo bwo gupima ubugari bw'umurongo bwigenga, budasaba laser y'inyongera kugira ngo ubone ikimenyetso cy'inyongera, gisaba gukoresha imigozi miremire y'uburyo bumwe. Ikibazo kiri mu ikoranabuhanga ryo kumenya imiterere y'umurongo ni uko gutinda igihe gisabwa ari kimwe n'ubugari bw'umurongo, ku buryo ubugari bw'umurongo ari kHz nke gusa, ndetse na munsi ya 1kHz bisaba uburebure bunini cyane bw'umugozi.

Ishusho ya 1: Ishusho y'icyitegererezo cy'impeta y'urukiramende.

Impamvu y'ibanze yo gukoresha imiyoboro ya fibre ni uko fibre ifite uburebure buciriritse ishobora gutinda igihe kirekire kuko urumuri rugenda mu mpande nyinshi muri fibre. Kugira ngo utandukanye urumuri rwoherezwa mu mpande zitandukanye, modulator ya acousto-optic ishobora gukoreshwa mu mpande kugira ngo ikore impuzandengo runaka (urugero, 100MHz). Kubera ko iyi mpuzandengo ari nini cyane kuruta ubugari bw'umurongo, urumuri rwagenze mu mpande zitandukanye muri iyo mpuzandengo rushobora gutandukana mu mpande. Muriicyuma gipima foto, umwimerereitara rya laserkandi umuvuduko w'urumuri nyuma yo guhindura umurongo ushobora gukoreshwa mu gupima ubugari bw'umurongo.

Iyo nta gikoresho cyo kongera ingufu kiri muri urwo ruziga, igihombo kiri muri modulator ya acousto-optic na fibre kiba kinini cyane, kandi ubukana bw'urumuri buzashira cyane nyuma y'uruziga rwinshi. Ibi bigabanya cyane umubare w'uruziga iyo hapimwe ubugari bw'umurongo. Fibre amplifiers zishobora kongerwa kuri urwo ruziga kugira ngo zikurweho iki kibazo.

Ariko, ibi bitera ikibazo gishya: nubwo urumuri runyura mu mpande zitandukanye ruba rwitandukanye rwose, ikimenyetso cy'urumuri gituruka ku mabara atandukanye ya fotoni, bihindura imiterere y'urumuri muri rusange. Impeta ya fibre optique ishobora gutegurwa mu buryo bukwiye kugira ngo ihagarike neza izi ngaruka. Amaherezo, ubushobozi bwo kumva urujya n'uruza rw'urumuri rwa fibre cyclic bugengwa n'urusaku rwaamplifier ya fibreNi ngombwa kandi gusuzuma uburyo fibre n'imirongo itari iya Lorentz mu gutunganya amakuru