Isihluzi esiNarrow-Band-Sahlulwe kwisihluzo seBand-Pass
Ingcaciso yeMveliso
Ugqithiso oluphezulu lubhekiselele kweyona ndlela iphezulu yokuhanjiswa kwesihluzo se-bandpass kwi-passband. Iimfuno zepeak transmittance ziyahluka ngokuxhomekeke kwisicelo. Kwiimfuno zokunciphisa ingxolo kunye nobukhulu bomqondiso, ukuba uhlawula ingqwalasela engakumbi kwisayizi yesignali, unethemba lokwandisa amandla omqondiso. Kule meko, udinga i-peak transmittance ephezulu. Ukuba unika ingqwalasela ngakumbi kuxinzelelo lwengxolo, unethemba lokufumana ubungakanani bomqondiso ukuya kwingxolo ephezulu, unokunciphisa ezinye iimfuno zokuhanjiswa kwencopho, kwaye wonyuse iimfuno zobunzulu obusikiweyo.
Uluhlu olusikiweyo lubhekiselele kuluhlu lwe-wavelength olufuna ukunqunyulwa ngaphezu kwe-passband. Kwizihluzo ze-narrowband, kukho icandelo le-cutoff yangaphambili, oko kukuthi, icandelo eline-cutoff wavelength encinci kune-wavelength ephakathi, kunye necandelo elide lokuqhawula, kunye necandelo eline-cutoff wavelength ephezulu kune-wavelength ephakathi. Ukuba yahlulahlulwe, iibhanti ezimbini ezisikiweyo kufuneka zichazwe ngokwahlukeneyo, kodwa ngokubanzi, uluhlu olusikiweyo lwesihluzo lunokwaziwa kuphela ngokuchaza obona bude bufutshane kunye nobona bude bubude obudingwa sisihluzo seqela elimxinwa. icimile.
Ubunzulu obusikiweyo bubhekisa kugqithiso oluphezulu oluvumela ukukhanya ukuba kudlule kwindawo esikiweyo. Iinkqubo ezahlukeneyo zesicelo zineemfuno ezahlukeneyo zokunqunyulwa kobunzulu. Umzekelo, kwimeko ye-excitation light fluorescence, ubunzulu obusikiweyo bufuneka ngokubanzi bube ngaphantsi kwe-T.<0.001%. Kwiinkqubo eziqhelekileyo zokubeka iliso kunye nokuchonga, ubunzulu obunqunyiweyo T<0.5% ngamanye amaxesha anele.
