Waa maxay modulator electro-optic shanlada inta jeer ee indhaha?Qaybta Kowaad

Shanlada soo noqnoqda indhaha waa spectrum ka kooban taxane si siman u kala qaybsan qaybaha soo noqnoqda ee spectrum, kuwaas oo ay dhalin karaan laysarka qaab qufulan, resonators, amamodulators electro-optical. Shanlooyinka soo noqnoqda indhaha ee uu keenaymodulators electro-opticwaxay leeyihiin astaamaha soo noqnoqoshada sare ee soo noqnoqda, qallajinta gudaha iyo awoodda sare, iwm, kuwaas oo si weyn loogu isticmaalo hagaajinta qalabka, spectroscopy, ama fiisigiska aasaasiga ah, waxayna soo jiidatay xiiso badan oo cilmi-baarayaal ah sannadihii u dambeeyay.

Dhawaan, Alexandre Parriaux iyo kuwo kale oo ka socda Jaamacadda Burgendi ee Faransiiska ayaa daabacday warqad dib u eegis ah joornaalka Horumarka Optics iyo Photonics, si nidaamsan u soo bandhigaya horumarkii ugu dambeeyay ee cilmi baarista iyo adeegsiga shanlooyinka soo noqnoqda indhaha ee ay abuureenHababka elektaroonigga ah: Waxaa ka mid ah hordhaca shanlada soo noqnoqda indhaha, habka iyo sifooyinka shanlada soo noqnoqda indhaha ee ay dhalisomodulator elektaroonik ah, oo ugu dambeyntii tiriyey xaaladaha codsiga eemodulator elektaroonik ahShanlada inta jeer ee indhaha si faahfaahsan, oo ay ku jirto codsiga saxda ah ee spectrum, faragelinta shanlada indhaha laba jibaaran, qalabaynta qalabka iyo abuurista mowjad qaabaysan, waxayna ka hadlaysaa mabda'a ka dambeeya codsiyada kala duwan. Ugu dambayntii, qoraagu waxa uu siinayaa rajada korantada-optic modulator-ka tignoolajiyada shanlada inta jeer ee indhaha.

01 Taariikhda

Bishan 60 ka hor ayay ahayd markii Dr. Maiman uu ikhtiraacay laser-kii ugu horreeyay ee Ruby. Afar sano ka dib, Hargrove, Fock iyo Pollack of Bell Laboratories ee Mareykanka ayaa ahaa kuwii ugu horreeyay ee soo tebiya habka firfircoon ee qufulka ee lagu gaaray lasers-ka helium-neon, qaabka-qufulka laser spectrum ee waqtiga domain waxaa loo soo bandhigay sida qiiqa garaaca wadnaha, Qaybta soo noqnoqda waa xariiqyo gaagaaban oo kala siman oo siman, oo aad ula mid ah isticmaalka maalinlaha ah ee shanlooyinka, sidaas darteed waxaan ugu yeernaa spectrum "shanlada inta jeer ee indhaha ah". Waxaa loogu yeeraa "shanlada inta jeer ee indhaha".

Sababtoo ah rajada codsiga wanaagsan ee shanlada indhaha, abaalmarinta Nobel Prize ee Fiisigiska ee 2005 waxaa la siiyay Hansch iyo Hall, kuwaas oo sameeyay shaqo horudhac ah oo ku saabsan tignoolajiyada shanlada indhaha, tan iyo markaas, horumarinta shanlada indhaha ayaa gaartay heer cusub. Sababtoo ah codsiyada kala duwan waxay leeyihiin shuruudo kala duwan oo loogu talagalay shanlooyinka indhaha, sida korontada, kala dheereynta khadka iyo hirarka dhexe, tani waxay keentay baahida loo qabo in la isticmaalo habab tijaabo ah oo kala duwan si loo dhaliyo shanlooyinka indhaha, sida laser-qaab-quful ah, micro-resonators iyo electro-optical. modulatore

FIG 1 Waqtiga spectrum spectrum iyo inta jeer ee spectrum domain ee shanlada soo noqnoqda indhaha
Isha sawirka: Shanlooyinka soo noqnoqda korantada

Tan iyo markii la helay shanlooyinka soo noqnoqda indhaha, inta badan shanlooyinka soo noqnoqda indhaha ayaa la soo saaray iyadoo la adeegsanayo leysarka qaab qufulan. Laysarka qaab-xiran, dalool leh safar-wareeg ah oo τ ah ayaa loo isticmaalaa in lagu hagaajiyo xiriirka wejiga ee ka dhexeeya hababka dhaadheer, si loo go'aamiyo heerka soo noqnoqda ee laysarka, kaas oo guud ahaan noqon kara megahertz (MHz) ilaa gigahertz ( GHz)

Shanlada inta jeer ee indhaha ah ee ay dhaliso micro-resonator waxay ku saleysan tahay saameyn aan toos ahayn, waqtiga safarka wareega waxaa lagu go'aamiyaa dhererka godka yar-yar, sababtoo ah dhererka godka yar-yar ayaa guud ahaan ka yar 1mm, inta jeer ee indhaha. Shanlada ka dhalata dalool-yaraha guud ahaan waa 10 gigahertz ilaa 1 terahertz. Waxaa jira saddex nooc oo caan ah oo ah microcavities, microtubules, microspheres iyo microrings. Isticmaalka saamaynta aan tooska ahayn ee fiilooyinka indhaha, sida kala firdhisanaanta Brillouin ama isku dhafka afarta-mawjadaha, oo ay weheliso microcavities, shanlooyinka soo noqnoqda indhaha ee tobanaan nanometers ayaa la soo saari karaa. Intaa waxaa dheer, shanlooyinka soo noqnoqda indhaha ayaa sidoo kale la dhalin karaa iyada oo la adeegsanayo qaar ka mid ah qalab-yaqaannada acousto-optic.