Indlela yokulinganisa ububanzi bomgcai-laser yefrikhwensi enye
Iindlela ezahlukeneyo zokulinganisa ububanzi be-single frequency laser ukusuka kwi-coarse ukuya kwi-fine, kunye neemeko zazo ezifanelekileyo kunye namanqaku obuchwephesha, zishwankathelwe ngolu hlobo lulandelayo:
1, Umlinganiselo othe ngqo nge-spectrometer (umlinganiselo orhabaxa, ububanzi bomgca ≥ inqanaba le-GHz)
Sebenzisa i-grating spectrometer okanye i-optical spectrometer (OSA) ukuze ubone ukuba yimowudi enye yobude obude, ulinganise umlinganiselo woxinzelelo lwemowudi yobude obude kunye nobubanzi bomgca wemowudi yobude obude. Isisombululo se-optical spectrometer esiqhelekileyo simalunga ne-0.1-0.01 nm (ehambelana ne-0.1-10 GHz kwi-near-infrared), kwaye ukusebenza okuphezulu kunokufikelela kwi-1 pm, okufanelekileyo kuphela ekuhlolweni kwangaphambili kobubanzi bomgca.ileza.
2, Ukuskena iFabry Perot (FP) etalon (ububanzi bomgca obuphakathi obumxinwa)
Ifanelekile kwiilaser ezinobubanzi obuncinci bomgca okanye isithuba esincinci semowudi ende kunesisombululo se-optical spectrometer. Xa ulinganisa, kuyimfuneko ukugweba ngokusekelwe kumlinganiselo wobubanzi bomgca welaser ukuya kububanzi bemowudi ye-FP: xa ububanzi bomgca welaser bukhulu kakhulu kunobubanzi bemowudi ye-cavity, bunokufundwa ngokuthe ngqo; Xa bufana, kufuneka i-deconvolution; Ukuba incinci kakhulu kunexesha, kuyimfuneko ukuyitshintsha nge-FP echanekileyo ephezulu okanye usebenzise itekhnoloji yokumisela imiphetho ukuze uqikelele.
3, iHeterodyne/Delay Self Heterodyne kunye neSelf Homodyne (Ububanzi bomgca obumxinwa, uluhlu lwe-kHz ~ MHz)
Xa i-laser ye-single frequency ehambelanayo idlula isisombululo se-optical spectrometer, indlela ye-heterodyne (ene-laser yereferensi yomgca omxinwa kakhulu) okanye indlela ye-self heterodyne/self homodyne elahliweyo (ngaphandle kwe-laser yereferensi) isetyenziswa rhoqo. Esi sixhobo yi-fiber Mach Zehnder okanye i-interferometer ye-Michelson, ene-time delayed ye-τ d_d (emiselwa ngumahluko kubude be-fiber) phakathi kweengalo ezimbini;I-AOM ModulatorUtshintsho lwefrikhwensi luyi-self heterodyne, aluqhagamshelwanga yi-self homodyne. I-AOM Modulator inokutshintsha ifrikhwensi ye-beat isuke kwi-DC ukuze inciphise ukuphazamiseka kwefrikhwensi ephantsi.
4, Amanyathelo okhuseleko:
4.1 Iifayibha ze-optical ezinde ziyachaphazeleka kukungcangcazela/ukushukuma kobushushu, kwaye ukuzinza kwe-interferometer kufuneka kuphuculwe;
4.2 Iitshaneli zamandla ezimbini kufuneka zilinganiswe, kwayeIsandisi-lizwi se-EDFA Opticali-interferometer ye-compension okanye ye-fiber ring multi cycle ingasetyenziswa;
4.3 Xa ububanzi bomgca buncinci kakhulu, bungafunda ububanzi bomgca obuyi-20 dB, buze bufumane ububanzi bomgca obuyi-3 dB ngokusekelwe kwimilo yomgca weLorentz;
4.4 Sebenzisa isilawuli se-polarization (PC) okanye isibuko esijikelezayo seFaraday (FRM) ukuze ucinezele ukufiphala kwe-polarization.
Ixesha lokuthumela: Julayi-09-2026