Isihlungi Se-Narrow-Band–Sihlukaniswe Kusihlungi Se-Band-Pass
Incazelo Yomkhiqizo
I-peak transmittance ibhekisela ekudluliselweni okuphezulu kakhulu kwesihlungi se-bandpass kubhendi yokungena. Izidingo zokudluliswa okuphezulu ziyahlukahluka kuye ngohlelo lokusebenza. Ezimfuneko zokucindezelwa komsindo nosayizi wesignali, uma unaka kakhulu usayizi wesignali, uthemba ukwandisa amandla esignali. Kulokhu, udinga ukudluliswa okuphezulu okuphezulu. Uma unaka kakhulu ukucindezela komsindo, uthemba ukuthola i-signal-to-noise Ratio ephezulu, unganciphisa ezinye izimfuneko zokudlulisela phambili, futhi ukhuphule izimfuneko zokujula kokunqamula.
Ibanga elisikiwe libhekisela ebangeni le-wavelength elidinga ukunqanyulwa ngaphezu kwebhendi yokungena. Kuzihlungi ze-narrowband, kunesigaba sokusika ngaphambili, okungukuthi, isigaba esinobude beza obunqamukile obuncane kunobude beza obumaphakathi, kanye nesigaba esinqunyiwe eside, esinesigaba esinobude obunqunyiwe obuphezulu kunobude obumaphakathi. Uma ihlukaniswa, amabhande amabili asikiwe kufanele achazwe ngokwehlukana, kodwa ngokuvamile, uhla lokunqanyulwa kwesihlungi lungaziwa kuphela ngokucacisa ubude begagasi obufushane kakhulu kanye nobude begagasi obude kakhulu okudingeka isihlungi sebhande elincane ukuze sisike. icishiwe.
Ukujula okunqunyiwe kubhekisela ekudluliseni okuphezulu okuvumela ukukhanya kudlule endaweni enqamuliwe. Amasistimu ohlelo ahlukene anezidingo ezihlukene zokujula kokusika. Isibonelo, esimweni se-excitation light fluorescence, ukujula okunqunyiwe ngokuvamile kuyadingeka ukuthi kube ngaphansi kuka-T.<0.001%. Ezinhlelweni ezijwayelekile zokuqapha nokuhlonza, ukujula okunqunyiwe kwe-T<0.5% kwesinye isikhathi kwanele.
