Athikele ea 2: Fiber optic spectrometer ke eng, 'me u khetha sekhechana le fiber e nepahetseng joang?
Fiber optic spectrometers hajoale e emela sehlopha se hlahelletseng sa li-spectrometer.Sehlopha sena sa spectrometer se nolofalletsa phetiso ea mats'oao a optical ka thapo ea fiber optic, eo hangata e bitsoang "fiber optic jumper", e thusang ho feto-fetoha ha maemo le bonolo ho tlhahlobo ea spectral le tlhophiso ea sistimi.Ho fapana le li-spectrometer tse tloaelehileng tsa laboratori tse nang le bolelele bo boholo ho tloha ho 300mm ho isa ho 600mm 'me li sebelisa li-gratings tsa ho hlahloba, li-fiber optic spectrometers li sebelisa li-grating tse tsitsitseng, tse felisang tlhoko ea li-motor tse potolohang.Bolelele ba li-spectrometer tsena hangata bo maemong a 200mm, kapa bo ka ba bokhuts'oane le ho feta, ho isa ho 30mm kapa 50mm.Lisebelisoa tsena li kopane haholo ka boholo 'me hangata li bitsoa miniature fiber optic spectrometers.
Miniature Fiber Spectrometer
Fiber optic spectrometer e nyenyane e tumme haholo liindastering ka lebaka la ho kopana ha eona, ho baballa litšenyehelo, bokhoni ba ho lemoha ka potlako, le ho fetoha habonolo ha eona.Fiber optic spectrometer e nyane hangata e na le sekhechana, seipone sa concave, grating, detector ea CCD/CMOS, le potoloho e amanang le koloi.E hoketsoe ho komporo ea komporo (PC) software ka thapo ea USB kapa thapo ea serial ho phethela pokello ea data ea spectral.
Sebopeho sa fiber optic spectrometer
Fiber optic spectrometer e na le adaptara ea fiber interface, e fana ka khokahanyo e sireletsehileng bakeng sa fiber ea optical.Li-interface tsa fiber tsa SMA-905 li sebelisoa ho li-fiber optic spectrometers tse ngata empa lisebelisoa tse ling li hloka FC/PC kapa likhokahano tse sa tloaelehang tsa fiber, joalo ka 10mm bophara ba cylindrical multi-core fiber interface.
SMA905 fiber interface (e ntšo), FC / PC fiber interface (e mosehla).Ho na le sekotjana ho sebopeho sa FC/PC bakeng sa ho beha maemo.
Letšoao la optical, ka mor'a hore le fete ka har'a fiber ea optical, le tla qala ho feta ka lekhalo la optical.Li-spectrometer tse nyane hangata li sebelisa li-slits tse sa fetoheng, moo bophara ba sekhahla bo tsitsitseng.Athe, JINSP fiber optic spectrometer e fana ka bophara bo tloaelehileng ba sekhahla sa 10μm, 25μm, 50μm, 100μm, le 200μm ka litlhaloso tse fapaneng, 'me litlhophiso le tsona li fumaneha ho latela litlhoko tsa mosebelisi.
Phetoho ea bophara ba li-slit e ka ama khanya ea leseli le tharollo ea optical hangata, likarolo tsena tse peli li bonts'a likamano tsa khoebo.Ho fokotsa bophara ba lekhalo, ho phahamisa ponahalo ea mahlo, leha ho le joalo ka litšenyehelo tsa ho fokotseha ha khanya.Ho bohlokoa ho hlokomela hore ho holisa lekhalo ho eketsa phallo ea leseli ho na le mefokolo kapa ha ho na moeli.Ka mokhoa o ts'oanang, ho fokotsa sekhahla ho na le mefokolo ho tharollo e ka finyelloang.Basebelisi ba tlameha ho lekola le ho khetha lekhalo le loketseng ho latela litlhoko tsa bona, joalo ka ho etelletsa pele phallo e khanyang kapa tharollo ea optical.Ntlheng ena, litokomane tsa tekheniki tse fanoeng bakeng sa li-spectrometer tsa JINSP tsa fiber optic li kenyelletsa tafole e felletseng e hokahanyang bophara ba sekhechana le maemo a bona a tharollo e tsamaellanang, e sebetsang e le tšupiso ea bohlokoa bakeng sa basebelisi.
Lekhalo le moqotetsane
Slit-Resolution Comparison Table
Basebelisi, ha ba ntse ba theha sistimi ea spectrometer, ba hloka ho khetha likhoele tse nepahetseng tsa optical bakeng sa ho amohela le ho fetisetsa matšoao sebakeng sa petso ea spectrometer.Ho hlokahala hore ho nahanoe ka mekhahlelo e meraro ea bohlokoa ha ho khethoa likhoele tsa optical.Paramethara ea pele ke bophara ba mantlha, bo fumanehang ka mefuta e mengata ea menyetla e kenyelletsang 5μm, 50μm, 105μm, 200μm, 400μm, 600μm, esita le bophara bo boholo ho feta 1mm.Ke habohlokoa ho hlokomela hore ho eketsa bophara ba mantlha ho ka ntlafatsa matla a fumanoang karolong e ka pele ea fiber ea optical.Leha ho le joalo, bophara ba sekhahla le bophahamo ba detector ea CCD / CMOS li fokotsa matšoao a optical ao spectrometer e ka a fumanang.Kahoo, ho eketsa bophara ba mantlha ha ho hlile ha ho ntlafatse kutloisiso.Basebelisi ba lokela ho khetha bophara bo nepahetseng ba mantlha ho latela tlhophiso ea sistimi.Bakeng sa li-spectrometer tsa B&W Tek tse sebelisang li-detectors tsa CMOS tse melang mefuteng e kang SR50C le SR75C, e nang le 50μm slit configuration, ho kgothaletswa ho sebedisa 200μm core diameter optical fiber bakeng sa kamohelo ya matshwao.Bakeng sa li-spectrometer tse nang le li-detectors tsa CCD ka hare ho mefuta e kang SR100B le SR100Z, ho ka ba molemo ho nahana ka likhoele tse teteaneng tsa optical, tse kang 400μm kapa 600μm, bakeng sa ho amohela lipontšo.
Li-diameter tse fapaneng tsa fiber ea optical
Letšoao la fiber optic le kopantsoeng le sekheo
Karolo ea bobeli ke sebaka sa ho sebetsa sa wavelength le lisebelisoa tsa fiber optical.Lisebelisoa tsa fiber ea optical hangata li kenyelletsa High-OH (high hydroxyl), Low-OH (low hydroxyl), le likhoele tse hanyetsanang le UV.Lisebelisoa tse fapaneng li na le litšobotsi tse fapaneng tsa phetiso ea wavelength.Li-fiber tsa optical tse phahameng-OH li atisa ho sebelisoa ka har'a mahlaseli a ultraviolet / a bonahalang a khanyang (UV / VIS), ha li-fibers tse tlaase-OH li sebelisoa sebakeng se haufi le infrared (NIR).Bakeng sa mahlaseli a kotsi, ho lokela ho nahanoa ka likhoele tse khethehileng tse hanyetsanang le UV.Basebelisi ba lokela ho khetha fiber ea optical e nepahetseng ho latela bolelele ba nako ea ts'ebetso ea bona.
Ntlha ea boraro ke boleng ba palo ea aperture (NA) ea likhoele tsa optical.Ka lebaka la melao-motheo ea tlhahiso ea likhoele tsa optical, leseli le hlahisoang ho tloha pheletsong ea faeba le koaletsoe ka har'a sebaka se itseng sa divergence angle range, se khetholloang ke boleng ba NA.Li-multi-mode optical fibers ka kakaretso li na le litekanyetso tsa NA tsa 0.1, 0.22, 0.39, le 0.5 e le likhetho tse tloaelehileng.Ho nka mohlala o tloaelehileng haholo oa 0.22 NA, ho bolela hore bophara ba letheba la fiber ka mor'a 50 mm bo ka ba 22 mm, 'me ka mor'a 100 mm, bophara ke 44 mm.Ha ba rala spectrometer, bahlahisi ka tloaelo ba nahana ho bapisa boleng ba NA ea optical fiber haufi-ufi ka moo ho ka khonehang ho etsa bonnete ba ho amohela matla a mangata.Ho feta moo, boleng ba NA ba fiber ea optical bo amana le ho kopanngoa ha lilense karolong e ka pele ea fiber.Boleng ba NA ba lense le bona bo lokela ho ts'oaroa ka hohle kamoo ho ka khonehang le boleng ba NA ba fiber ho qoba tahlehelo ea matšoao.
Boleng ba NA ba fiber ea optical bo etsa qeto ea hore na ho na le phapang e kae ea lebone la optical
Ha likhoele tsa optical li sebelisoa hammoho le lilense kapa liipone tsa concave, boleng ba NA bo lokela ho bapaloa ka hohle kamoo ho ka khonehang ho qoba tahlehelo ea matla.
Fiber optic spectrometers e fumana leseli ka li-angles tse khethiloeng ke boleng ba tsona ba NA (Numerical Aperture).Letšoao la ketsahalo le tla sebelisoa ka botlalo haeba NA ea leseli la ketsahalo e le tlase kapa e lekana le NA ea spectrometer.Tahlehelo ea matla e etsahala ha NA ea leseli la ketsahalo e le kholo ho feta NA ea spectrometer.Ntle le phetiso ea fiber optic, khokahano ea optical ea sebaka sa mahala e ka sebelisoa ho bokella mats'oao a leseli.Sena se kenyelletsa ho fetolela leseli le bapileng hore le be lekhalo le sebelisang lilense.Ha o sebelisa litsela tsa sebaka sa mahala, ho bohlokoa ho khetha lilense tse nepahetseng tse nang le boleng ba NA bo ts'oanang le ba spectrometer, ha o ntse o netefatsa hore sekhechana sa spectrometer se behiloe moo lense e leng ho sona ho fihlela khanya e pharalletseng.
Sebaka sa mahala sa ho kopanya optical
Nako ea poso: Dec-13-2023