Ii-spectrometer ze-optical fiber zihlala zisebenzisa i-optical fiber njengesihlanganisi sesignali, esiza kudibana ne-photometric ne-spectrometer ukuze kuhlalutywe i-spectral. Ngenxa yokuba lula kwe-optical fiber, abasebenzisi banokuba bhetyebhetye kakhulu ekwakheni inkqubo yokufumana i-spectrum.
Inzuzo yee-fiber optic spectrometers kukuba inkqubo yokulinganisa iyakwazi ukuguquguquka kunye nokuguquguquka.i-spectrometer yefayibha ye-opticalukusuka eMUT eJamani ikhawuleza kangangokuba ingasetyenziselwa uhlalutyo lwe-intanethi. Kwaye ngenxa yokusetyenziswa kwee-universal detectors ezingabizi kakhulu, ixabiso le-spectrometer liyancitshiswa, kwaye ngaloo ndlela ixabiso lenkqubo yonke yokulinganisa liyancitshiswa.
Uqwalaselo olusisiseko lwe-fiber optic spectrometer luquka i-grating, i-slit, kunye ne-detector. Iiparameter zezi nxalenye kufuneka zichazwe xa kuthengwa i-spectrometer. Ukusebenza kwe-spectrometer kuxhomekeke ekudibaneni ngokuchanekileyo kunye nokulinganiswa kwezi nxalenye, emva kokulinganiswa kwe-optical fiber spectrometer, ngokomgaqo, ezi zixhobo azinakuba naluphi na utshintsho.
Intshayelelo yomsebenzi
igridi
Ukukhetha i-grating kuxhomekeke kububanzi be-spectral kunye neemfuno zesisombululo. Kwi-fiber optic spectrometers, ububanzi be-spectral buhlala buphakathi kwe-200nm kunye ne-2500nm. Ngenxa yemfuneko yesisombululo esiphezulu, kunzima ukufumana ububanzi be-spectral; Kwangaxeshanye, xa imfuneko yesisombululo iphezulu, i-flux ekhanyayo ayikhanyi kangako. Kwiimfuno zesisombululo esiphantsi kunye nobubanzi be-spectral, i-300 line / mm grating lukhetho oluqhelekileyo. Ukuba kufuneka isisombululo se-spectral esiphezulu, sinokufezekiswa ngokukhetha i-grating enemigca ye-3600 /mm, okanye ukukhetha i-detector enesisombululo se-pixel esingaphezulu.
umngxuma
Isithuba esincinci sinokuphucula isisombululo, kodwa ukukhanya kuncinci; Kwelinye icala, izithuba ezibanzi zinokunyusa uvakalelo, kodwa ngexabiso lesisombululo. Kwiimfuno ezahlukeneyo zokusetyenziswa, kukhethwa ububanzi besithuba esifanelekileyo ukuze kuphuculwe iziphumo zovavanyo zizonke.
iprobe
Isixhobo sokubona ngamehlo ngandlela thile simisela isisombululo kunye novakalelo lwe-fiber optic spectrometer, indawo enovakalelo lokukhanya kwisixhobo sokubona ngamehlo ngokomgaqo ilinganiselwe, yahlulwe yaba zii-pixels ezininzi ezincinci ukuze kubekho isisombululo esiphezulu okanye yahlulwe yaba zii-pixels ezimbalwa kodwa ezinkulu ukuze kubekho uvakalelo oluphezulu. Ngokubanzi, uvakalelo lwesixhobo sokubona ngamehlo seCCD lungcono, ngoko ke unokufumana isisombululo esingcono ngaphandle kovakalelo ukuya kwinqanaba elithile. Ngenxa yovakalelo oluphezulu kunye nengxolo yobushushu yesixhobo sokubona ngamehlo se-InGaAs kwi-infrared ekufutshane, umlinganiselo wesignali-kwingxolo yenkqubo unokuphuculwa ngempumelelo ngokusebenzisa ifriji.
Isihluzi se-Optical
Ngenxa yesiphumo se-multistage diffraction se-spectrum ngokwayo, ukuphazamiseka kwe-multistage diffraction kunokuncitshiswa ngokusebenzisa isihluzi. Ngokungafaniyo nee-spectrometers zesiqhelo, ii-fiber optic spectrometers zigqunywe kwi-detector, kwaye le nxalenye yomsebenzi kufuneka ifakwe kwindawo yayo efektri. Kwangaxeshanye, i-coating ikwanomsebenzi wokuchasana nokukhanya kwaye iphucula umlinganiselo wesignali-kwingxolo yenkqubo.
Ukusebenza kwe-spectrometer kuxhomekeka kakhulu kububanzi be-spectral, isisombululo se-optical kunye nobuntununtunu. Utshintsho kwenye yezi parameters ludla ngokuchaphazela ukusebenza kwezinye iiparameter.
Umceli mngeni ophambili we-spectrometer asikokwandisa zonke iiparameter ngexesha lokwenziwa, kodwa kukwenza izalathisi zobugcisa ze-spectrometer zihlangabezane neemfuno zokusebenza kwezicelo ezahlukeneyo kolu khetho lwesithuba olunemilinganiselo emithathu. Eli cebo livumela i-spectrometer ukuba yanelise abathengi ukuze bafumane imbuyekezo ephezulu ngotyalo-mali oluncinci. Ubungakanani betyhubhu buxhomekeke kwizalathisi zobugcisa ekufuneka i-spectrometer izifezekise, kwaye ubukhulu bayo bunxulumene nobunzima be-spectrometer kunye nexabiso lemveliso ye-spectrometer. Iimveliso ze-Spectrometer kufuneka zihlangabezane ngokupheleleyo neempawu zobugcisa ezifunekayo kubathengi.
Uluhlu lweSpectral
IiSpectrometernge-spectral range encinci idla ngokunika ulwazi oluneenkcukacha nge-spectral, ngelixa i-spectral ranges ezinkulu zinoluhlu olubanzi lokubona. Ke ngoko, uluhlu lwe-spectral lwe-spectrometer yenye yeeparameter ezibalulekileyo ekufuneka zichazwe ngokucacileyo.
Izinto ezichaphazela uluhlu lwe-spectral ikakhulu yi-grating kunye ne-detector, kwaye i-grating kunye ne-detector ehambelanayo zikhethwa ngokweemfuno ezahlukeneyo.
uvakalelo
Ukuthetha ngobuntununtunu, kubalulekile ukwahlula phakathi kobuntununtunu kwi-photometry (amandla esignali amancinci kakhulu anokuthii-spectrometerinokubona) kunye novakalelo kwi-stoichiometry (umahluko omncinci ekufunxeni onokulinganiswa yi-spectrometer).
a. Uvakalelo lwe-photometric
Kwizicelo ezifuna ii-spectrometers ezibonisa uvakalelo oluphezulu, ezifana ne-fluorescence kunye ne-Raman, sicebisa ii-spectrometers ze-SEK thermo-cooled optical fiber detectors ezine-thermo-cooled 1024 pixel two-dimensional array CCD detectors, kunye nee-detector condensing lens, izibuko zegolide, kunye ne-wide slits (100μm okanye ebanzi). Le modeli ingasebenzisa amaxesha amade okudibanisa (ukusuka kwi-7 milliseconds ukuya kwi-15 mins) ukuphucula amandla esignali, kwaye inokunciphisa ingxolo kwaye iphucule uluhlu olutshintshatshintshayo.
b. Uvakalelo lwe-Stoichiometric
Ukuze kufunyanwe amaxabiso amabini esantya sokufunxa nge-amplitude esondeleyo kakhulu, akufuneki kuphela uvakalelo lwe-detector, kodwa kufuneka nomlinganiselo wesignali-kwingxolo. I-detector enomlinganiselo ophezulu wesignali-kwingxolo yi-thermoelectric refrigerated 1024-pixel two-dimensional array CCD detector kwi-SEK spectrometer enomlinganiselo wesignali-kwingxolo we-1000:1. Umyinge wemifanekiso emininzi ye-spectral unokuphucula umlinganiselo wesignali-kwingxolo, kwaye ukunyuka kwenani eliqhelekileyo kuya kubangela ukuba umlinganiselo wesignali-kwingxolo unyuke kwisantya se-square root, umzekelo, umyinge wamaxesha ali-100 unokunyusa umlinganiselo wesignali-kwingxolo amaxesha ali-10, ufikelele kwi-10,000:1.
Isisombululo
Isisombululo se-Optical sisixhobo esibalulekileyo sokulinganisa amandla okwahlulahlula i-optical. Ukuba ufuna isisombululo se-optical esiphezulu kakhulu, sicebisa ukuba ukhethe i-grating enemigca eyi-1200/mm nangaphezulu, kunye nomngxuma omncinci kunye ne-2048 okanye i-3648 pixel CCD detector.
Ixesha leposi: Julayi-27-2023