Gịnị bụ ihe eletrọ-optic modulator ngwa anya ugboro comb?Nke mbụ

Ngwa ngwa ngwa anya bụ ụdịdị dị iche iche nke nwere usoro nke ihe ndị nwere oghere n'otu n'otu na ụdịdị dị iche iche, nke enwere ike imepụta ya site na lasers akpọchiri akpọchi, resonators, ma ọ bụelectro-optical modulators. combs ugboro anya emepụtaraelectrooptic modulatorsnwere àgwà nke ugboro ugboro ugboro ugboro ugboro ugboro, esịtidem interdrying na ike dị elu, wdg, nke a na-eji ọtụtụ ebe na ngwá calibration, spectroscopy, ma ọ bụ isi physics, na dọtara ọzọ na-eme nnyocha nwere mmasị na-adịbeghị anya.

N'oge na-adịbeghị anya, Alexandre Parriaux na ndị ọzọ si na Mahadum Burgendi dị na France bipụtara akwụkwọ ntụleghachi n'akwụkwọ akụkọ Advances in Optics and Photonics, na-ewebata usoro nyocha kachasị ọhụrụ na ngwa nke combs ngwa anya na-emepụta site na.electro-optical modulation: Ọ na-agụnye iwebata ngwa anya ugboro comb, usoro na àgwà nke ngwa anya ugboro mbo eme siteelectrooptic modulator, na n'ikpeazụ depụtara ngwa ndapụta nkeelectrooptic modulatorNgwa anya ugboro mbo n'ụzọ zuru ezu, gụnyere ngwa nke ziri ezi ụdịdị dị iche iche, abụọ anya comb nnyonye anya, ngwá calibration na aka ike waveform ọgbọ, na-atụle ụkpụrụ n'azụ dị iche iche ngwa. N'ikpeazụ, onye odee na-enye atụmanya nke teknụzụ igwe eletrọ-optic modulator ngwa anya ugboro comb.

01 ndabere

Ọ bụ afọ 60 gara aga n'ọnwa a ka Dr. Maiman chepụtara laser ruby ​​nke mbụ. Afọ anọ ka e mesịrị, Hargrove, Fock na Pollack nke Bell Laboratories na United States bụ ndị mbụ na-akọ na-arụ ọrụ mode-mkpọchi enwetara na helium-neon lasers, na mode-kpọchi laser ụdịdị dị iche iche na-oge ngalaba na-anọchi anya dị ka a usu umu anwuru, na ngalaba ugboro bụ usoro nke discrete na equidistant mkpụmkpụ ahịrị, yiri nnọọ ka anyị na-eji combs kwa ụbọchị, n'ihi ya, anyị na-akpọ nke a ụdịdị dị iche iche "optical ugboro comb". Akpọrọ ya dị ka "mgbatị ugboro anya".

N'ihi na nke ọma ngwa atụmanya nke ngwa anya comb, Nobel Prize na Physics na 2005 e nyere Hansch na Ụlọ Nzukọ, bụ ndị mere ọrụ ọsụ ụzọ na ngwa anya comb technology, ebe ọ bụ na mgbe ahụ, mmepe nke ngwa anya mbo eruwo ọhụrụ ogbo. N'ihi na ngwa dị iche iche nwere ihe dị iche iche a chọrọ maka combs ngwa anya, dị ka ike, oghere ahịrị na etiti wavelength, nke a emeela ka ọ dị mkpa iji ụzọ nnwale dị iche iche na-emepụta combs anya, dị ka lasers ekpochi, micro-resonators na electro-optical. modulator.

FIG. 1 Oge ngalaba ụdịdị dị iche iche na ugboro ngalaba ụdịdị dị iche iche nke ngwa anya ugboro comb
Isi iyi onyonyo: combs ugboro electro-optic

Ebe ọ bụ na achọpụtara combs ngwa anya, a na-emepụta ọtụtụ combs ngwa anya site na iji laser ekpochi ọnọdụ. N'ime lasers akpọchiri akpọchi, a na-eji oghere nwere oge njem nke τ iji dozie mmekọrịta nke oge dị n'etiti ụdịdị ogologo oge, iji chọpụta ọnụọgụ ugboro ugboro nke laser, nke nwere ike isi na megahertz (MHz) gaa gigahertz ( GHz).

Ngwa ngwa ngwa anya nke micro-resonator na-emepụta na-adabere na mmetụta ndị na-adịghị na ya, na oge njem a na-ekpebi site na ogologo nke micro-cavity, n'ihi na ogologo nke micro-cavity n'ozuzu na-erughị 1mm, ngwa anya ugboro. mbo nke obere oghere na-emepụta na-abụkarị 10 gigahertz ruo 1 terahertz. Enwere ụdị microcavities atọ, microtubules, microspheres na microrings. N'iji mmetụta ndị na-adịghị na ntanetị na eriri anya, dị ka mgbasa ozi Brillouin ma ọ bụ ngwakọta anọ, jikọtara ya na microcavities, enwere ike ịmepụta ihe ntanetị anya ugboro iri na iri nke nanometers nso. Na mgbakwunye, enwere ike ịmepụta combs ngwa anya site na iji ụfọdụ modulators acousto-optic.