Intshayelelo kuIsixhobo sokubona ifoto yebhalansi(Isifumani seBalance se-Optoelectronic)
I-Balance Photodetector inokwahlulwa ibe ludidi lwe-fiber optic coupling kunye nodidi lwe-spatial optical coupling ngokwendlela ye-optical coupling. Ngaphakathi, inee-photodiode ezimbini ezihambelana kakhulu, imodyuli yesekethe ye-transimpedance amplifier yesandi esiphantsi, kunye nemodyuli yamandla esandi esiphantsi kakhulu. Ineempawu ze-high common mode rejection ratio, i-ultra-low noise, kunye ne-high bandwidth, kwaye isetyenziswa kakhulu kwicandelo lonxibelelwano oluhambelanayo lwe-optical. Ibe yindawo yophando kwiinkampani nakwiiyunivesithi kumazwe ahlukeneyo kwiminyaka yakutshanje.
Umgaqo wokusebenza weBalance Photodetector (Isitshicileli sebhalansi ye-Optoelectronic)
I-Balance Photodetector isebenzisa ii-photodiode ezimbini ezikwimeko ye-reverse bias njengeyunithi yokufumana ukukhanya. Xa ifumana isignali yokukhanya, i-photocurrent eveliswa zii-photodiode ezimbini iyasuswa kwaye idityaniswe ne-transimpedance amplifier ukuguqula isignali yangoku ibe sisignali ye-voltage ukuze iphume. Ukusetyenziswa kwesakhiwo sokunciphisa esizisebenzelayo kunokucinezela ngempumelelo isignali yemo eqhelekileyo evezwa sisibane se-oscillator sendawo kunye nomsinga omnyama, kwandise isignali yemo yokwahluka, kwaye kwinqanaba elithile kuphucule amandla okufumanisa iimpawu zokukhanya ezibuthathaka.
Iingenelo: Umlinganiselo ophezulu wokungavumi imowudi eqhelekileyo, uvakalelo oluphezulu, kunye ne-bandwidth yokubhaqwa okuphezulu zinokuhlangabezana neemeko ezahlukeneyo zesicelo.
Iingxaki: Amandla okukhanya aphantsi agcweleyo, afanele kuphela ukufunyanwa kokukhanya okubuthathaka, ukuhlanganiswa kufuneka kuphuculwe.
UMZOBO: Umzobo womgaqo wokusebenza wesixhobo sokufumanisa ibhalansi
Iiparameter zokusebenza kweBalance Photodetector (Optoelectronic)Isifumani sebhalansi)
1. Ukusabela
Ukusabela kubhekisa ekusebenzeni kakuhle kwe-photodiode ekuguquleni imiqondiso yokukhanya ibe yi-photocurrent, eyi-ratio ye-photocurrent kumandla okukhanya. Ukukhetha i-photodiode ephendula kakhulu kunokuphucula ngempumelelo uvakalelo lwe-Balance Photodetector.
Ukusabela kubhekisa ekusebenzeni kakuhle kwe-photodiode ekuguquleni imiqondiso yokukhanya ibe yi-photocurrent, eyi-ratio ye-photocurrent kumandla okukhanya. Ukukhetha i-photodiode ephendula kakhulu kunokuphucula ngempumelelo uvakalelo lwe-Balance Photodetector.
2. Ibhendiwidth
I-bandwidth imele i-frequency yesignali apho i-amplitude yesignali ye-output ye-Balance Photodetector ibola nge--3dB, kwaye inxulumene ne-parasite capacitance ye-photodiode, ubungakanani be-transimpedance, kunye nemveliso ye-gain bandwidth ye-operating amplifier.
3. Umlinganiselo wokwaliwa kwemowudi eqhelekileyo
Umlinganiselo wokulahlwa kwemowudi eqhelekileyo usetyenziselwa ukulinganisa inqanaba lokuncitshiswa kwemiqondiso yemowudi eqhelekileyo ngabafumani abalinganiselayo, kwaye iimveliso zorhwebo ngokubanzi zifuna ukulahlwa kwemowudi eqhelekileyo ubuncinane obuyi-25dB.
4. I-NEP
Amandla Okulingana Nengxolo: Amandla esignali yokufaka afunekayo kumlinganiselo wesignali-kwingxolo we-1, nto leyo eyiparameter ebalulekileyo yokulinganisa ukusebenza kwengxolo kwenkqubo. Izinto eziphambili zengxolo yokubona elinganiselayo yingxolo yokusasazeka kwe-optical kunye nengxolo yombane.
Ukusetyenziswa kwe-Balance Photodetector (i-Optoelectronic Balance Detector)
Kwiminyaka yakutshanje, iBalance Photodetector isetyenziswa kakhulu kwiindawo ezifana ne-laser wind radar, ukulinganisa ukungcangcazela kwe-laser, i-fiber optic sensing, i-weak light coherent detection, i-spectral detection, i-gas detection, njl. Uphando malunga nesantya esiphezulu, i-bandwidth ephezulu, ingxolo ephantsi, i-common mode rejection ratio ephezulu, kunye ne-balanced sensitivity ephezulu ye-balanced detectors yenze inkqubela phambili kwaye iphuhlisa ukuya ekudibaneni okuphezulu kunye nokusetyenziswa kwamandla aphantsi ukuhlangabezana neemeko ezahlukeneyo zesicelo.
Ixesha leposi: Feb-06-2025