I-athikili yesi-2: Iyini i-fiber optic spectrometer, futhi ukhetha kanjani i-slit ne-fiber efanele?
I-Fiber optic spectrometers okwamanje imelela isigaba esivelele sama-spectrometer.Lesi sigaba se-spectrometer sinika amandla ukudluliswa kwamasignali okubona ngentambo ye-fiber optic, evame ukubizwa ngokuthi i-fiber optic jumper, eyenza kube lula ukuguquguquka nokuguquguquka okuthuthukisiwe ekuhlaziyeni okubonakalayo kanye nokucushwa kwesistimu.Ngokuphambene nama-spectrometers amakhulu avamile ahlome ngobude bokugxila ngokuvamile obusuka ku-300mm kuya ku-600mm futhi zisebenzisa ama-grating wokuskena, ama-fiber optic spectrometer asebenzisa ama-grating angaguquki, asusa isidingo samamotho azungezayo.Ubude obugxilile balezi spectrometer ngokuvamile buphakathi kuka-200mm, noma bungaba bufushane nakakhulu, bufinyelele ku-30mm noma 50mm.Lezi zinsimbi zihlangene kakhulu ngosayizi futhi zivame ukubizwa ngokuthi ama-spectrometer amancane we-fiber optic.
I-Fiber Spectrometer encane
I-spectrometer encane ye-fiber optic idume kakhulu ezimbonini ngenxa yokuhlangana kwayo, ukusebenza kahle kwezindleko, amandla okubona ngokushesha, nokuguquguquka okumangalisayo.I-spectrometer encane ye-fiber optic ngokuvamile ihlanganisa ukuqhekeka, isibuko esiyi-concave, i-grated, i-CCD/CMOS detector, kanye nesekhethi yedrayivu ehlobene.Ixhunywe kusofthiwe yekhompuyutha (i-PC) ngekhebula le-USB noma ikhebula le-serial ukuze kuqedelwe ukuqoqwa kwedatha ye-spectral.
Isakhiwo se-Fiber optic spectrometer
I-fiber optic spectrometer ifakwe i-adaptha ye-fiber interface, inikeza uxhumano oluphephile lwe-fiber optical.I-SMA-905 fibre interfaces isetshenziswa kuma-spectrometer amaningi e-fiber optic nokho ezinye izinhlelo zokusebenza zidinga i-FC/PC noma i-fiber interfaces engajwayelekile, njengesixhumi esibonakalayo se-cylindrical multi-core fiber.
SMA905 fibre interface (emnyama), FC/PC fibre interface (ophuzi).Kunesikhala kusixhumi esibonakalayo seFC/PC sokubeka indawo.
Isignali ye-optical, ngemva kokudlula ku-fiber optical, izoqale idlule ekusikeni kwe-optical.Ama-spectrometer amancane ngokuvamile asebenzisa ama-slits angalungiseki, lapho ububanzi be-slit bulungisiwe.Nakuba, i-JINSP fibre optic spectrometer inikezela ngobubanzi obujwayelekile bokuhlukanisa obungu-10μm, 25μm, 50μm, 100μm, no-200μm ngokucaciswa okuhlukahlukene, nokwenza ngokwezifiso kuyatholakala futhi ngokuya ngezidingo zomsebenzisi.
Ushintsho kububanzi be-slit bungaba nomthelela ekuguquguqukeni kokukhanya nokulungiswa kwe-optical ngokuvamile, lezi zinhlaka ezimbili zibonisa ubudlelwano bokuhwebelana.Nciphisa ububanzi be-slit, ikhuphule ukucaca kokubona, nakuba ngezindleko zokuguquguquka kokukhanya okuncishisiwe.Kubalulekile ukuqaphela ukuthi ukunweba i-slit ukuze kwandiswe ukugeleza kokukhanya kunemikhawulo noma akukhona umugqa.Ngokufanayo, ukunciphisa uqhekeko kunemikhawulo ekuxazululeni okungafezwa.Abasebenzisi kufanele bahlole futhi bakhethe ukuhlukana okufanele ngokuhambisana nezidingo zabo zangempela, njengokunikeza kuqala ukuguquguquka kokukhanya noma ukulungiswa kokubona.Mayelana nalokhu, imibhalo yobuchwepheshe ehlinzekelwe ama-spectrometers e-fiber optic ye-JINSP ihlanganisa ithebula elibanzi elihlobanisa ububanzi be-slit namaleveli ahambisanayo wokuxazulula, asebenza njengesithenjwa esibalulekile kubasebenzisi.
Igebe elincane
Ithebula lokuqhathanisa le-Slit-Resolution
Abasebenzisi, ngenkathi besetha isistimu ye-spectrometer, badinga ukukhetha imicu yokubona efanelekile ukuze bathole futhi badlulisele amasignali endaweni yokuqhekeka kwe-spectrometer.Kudingeka imingcele emithathu ebalulekile okufanele icatshangelwe lapho kukhethwa ama-optical fibers.Ipharamitha yokuqala ububanzi obuwumgogodla, obutholakala ezinhlobonhlobo zamathuba ahlanganisa u-5μm, 50μm, 105μm, 200μm, 400μm, 600μm, kanye namadiayamitha amakhulu ngisho nangaphezu kuka-1mm.Kubalulekile ukuqaphela ukuthi ukwandisa ububanzi obuwumgogodla kungathuthukisa amandla atholwe ekugcineni kwe-fiber optical.Kodwa-ke, ububanzi be-slit kanye nokuphakama komtshina we-CCD/CMOS kunciphisa amasignali okubona angatholwa yi-spectrometer.Ngakho-ke, ukukhuphula ubukhulu be-core akusho ukuthuthukisa ukuzwela.Abasebenzisi kufanele bakhethe ububanzi obufanele bomnyombo ngokusekelwe ekucushweni kwesistimu kwangempela.Kuma-spectrometer e-B&W Tek asebenzisa izitholi ze-CMOS ezinomugqa kumamodeli afana ne-SR50C ne-SR75C, enokumiswa kokuhlukaniswa okungu-50μm, kunconywa ukusebenzisa i-200μm core diameter optical fiber ukuze kwamukelwe isignali.Kuma-spectrometer anezitholi ze-CCD zendawo yangaphakathi kumamodeli afana ne-SR100B ne-SR100Z, kungase kulungele ukucabangela imicu yokubona ewugqinsi, efana no-400μm noma 600μm, ukuze kwamukelwe isignali.
Izinhlobo ezahlukene ze-fiber optical
Isignali ye-fiber optic ehlanganiswe nesisinti
Isici sesibili ububanzi be-wavelength yokusebenza kanye nezinto zemicu ye-optical.Izinto zefiber optical ngokuvamile zihlanganisa i-High-OH (high hydroxyl), i-Low-OH (i-hydroxyl ephansi), kanye namafayibha avikela i-UV.Izinto ezihlukile zinezici ezihlukene zokudlulisa ubude beza.Izintambo eziphezulu ze-OH zivame ukusetshenziswa ebangeni lokukhanya le-ultraviolet/elibonakalayo (UV/VIS), kuyilapho amafayibha e-Low-OH asetshenziswa ebangeni eliseduze le-infrared (NIR).Ngobubanzi be-ultraviolet, imicu ekhethekile engamelana ne-UV kufanele icatshangelwe.Abasebenzisi kufanele bakhethe i-optical fibre efanele ngokusekelwe kubude begagasi babo bokusebenza.
Isici sesithathu inani lokuvula izinombolo (NA) lemicu yokubona.Ngenxa yezimiso zokukhishwa kwamafiber optical, ukukhanya okukhishiwe okuvela ekugcineni kwefayibha kuvalelwe phakathi kwebanga elithile lokuhluka kwe-engeli, elibonakala ngevelu ye-NA.Imicu yokubona enemodi eminingi ngokuvamile inamanani e-NA angu-0.1, 0.22, 0.39, kanye no-0.5 njengezinketho ezivamile.Uma sithatha isibonelo esivame kakhulu esingu-0.22 NA, kusho ukuthi ububanzi bendawo yefayibha ngemva kuka-50 mm bucishe bube ngu-22 mm, futhi ngemva kuka-100 mm, ububanzi bungama-44 mm.Lapho baklama i-spectrometer, abakhiqizi ngokuvamile bacabangela ukufanisa inani le-NA lefiber ebonakalayo eduze ngangokunokwenzeka ukuze baqinisekise ukwamukelwa okuphezulu kwamandla.Ukwengeza, inani le-NA le-fiber optical lihlobene nokuhlangana kwamalensi ekugcineni kwefiber.Inani le-NA lelensi kufanele futhi lifaniswe eduze ngangokunokwenzeka nenani le-NA lefayibha ukuze kugwenywe ukulahlekelwa kwesignali.
Inani le-NA lefiber optical linquma i-engeli yokuhlukana ye-optical beam
Uma imicu yokubona isetshenziswa ngokuhambisana namalensi noma izibuko eziconcave, inani le-NA kufanele lifaniswe eduze ngangokunokwenzeka ukuze kugwenywe ukulahlekelwa amandla.
Ama-Fiber optic spectrometer athola ukukhanya kuma-engeli anqunywe ivelu yawo ye-NA (Numerical Aperture).Isignali yesigameko izosetshenziswa ngokugcwele uma i-NA yesibani sesigameko ingaphansi noma ilingana ne-NA yaleyo spectrometer.Ukulahleka kwamandla kwenzeka lapho i-NA yokukhanya kwesigameko inkulu kune-NA ye-spectrometer.Ngokungeziwe ekudluliselweni kwe-fiber optic, ukuhlanganisa i-free-space optical kungasetshenziswa ukuqoqa amasignali okukhanya.Lokhu kuhilela ukuguqula ukukhanya okuhambisanayo kube isikejana kusetshenziswa amalensi.Uma usebenzisa imizila yokubona yesikhala esikhululekile, kubalulekile ukukhetha amalensi afanelekile anenani le-NA elifana nele-spectrometer, kuyilapho uqinisekisa ukuthi ukuhlukana kwe-spectrometer kubekwe endaweni okugxilwe kuyo ilensi ukuze kuzuzwe ukukhanya okukhulu okuguquguqukayo.
Isikhala samahhala sokuhlangana kwe-optical
Isikhathi sokuthumela: Dec-13-2023