Isingeniso ku-Isitholi sesithombe sebhalansi(Isitholi Sebhalansi Se-Optoelectronic)
I-Balance Photodetector ingahlukaniswa ngohlobo lokuxhumanisa lwe-fiber optic kanye nohlobo lokuxhumanisa lwe-spatial optical ngokwendlela yokuxhumanisa ye-optical. Ngaphakathi, iqukethe ama-photodiode amabili ahambisana kakhulu, imodyuli yesekethe ye-transimpedance amplifier ye-transimpedance enomsindo ophansi, kanye nemodyuli yamandla omsindo ophansi kakhulu. Inezici zesilinganiso sokwenqatshwa kwemodi evamile ephezulu, umsindo ophansi kakhulu, kanye ne-bandwidth ephezulu, futhi isetshenziswa kabanzi emkhakheni wokuxhumana okuqondile kwe-optical. Isibe yindawo yokucwaninga yamabhizinisi namanyuvesi emazweni ahlukahlukene eminyakeni yamuva nje.
Isimiso sokusebenza se-Balance Photodetector (Isitholi Sebhalansi Se-Optoelectronic)
I-Balance Photodetector isebenzisa ama-photodiode amabili esimweni se-reverse bias njengeyunithi yokwamukela ukukhanya. Lapho ithola isignali yokukhanya, i-photocurrent ekhiqizwa ama-photodiode amabili iyasuswa bese ihlanganiswa ne-transimpedance amplifier ukuze iguqule isignali yamanje ibe isignali ye-voltage ukuze iphume. Ukusetshenziswa kwesakhiwo esizinciphisayo kungacindezela ngempumelelo isignali yemodi evamile eyethulwa ukukhanya kwe-oscillator yendawo kanye nogesi omnyama, kwandise isignali yemodi yokuhlukanisa, futhi ngezinga elithile kuthuthukise ikhono lokubona izimpawu zokukhanya ezibuthakathaka.
Izinzuzo: Isilinganiso sokwenqatshwa kwemodi evamile ephezulu, ukuzwela okuphezulu, kanye nomkhawulokudonsa wokutholwa okuphezulu kungahlangabezana nezimo ezahlukahlukene zohlelo lokusebenza.
Okubi: Amandla okukhanya agcwele aphansi, afanelekela kuphela ukutholwa kokukhanya okubuthakathaka, ukuhlanganiswa kudinga ukuthuthukiswa.
UMFANEKISO: Umdwebo wesimiso sokusebenza kwesitholi sebhalansi
Amapharamitha okusebenza kwe-Balance Photodetector (Optoelectronic)Isitholi Sebhalansi)
1. Ukusabela
Ukusabela kubhekisela ekusebenzeni kahle kwe-photodiode ekuguquleni izimpawu zokukhanya zibe yi-photocurrent, okuyisilinganiso se-photocurrent namandla okukhanya. Ukukhetha i-photodiode enokusabela okuphezulu kungathuthukisa ngempumelelo ukuzwela kwe-Balance Photodetector.
Ukusabela kubhekisela ekusebenzeni kahle kwe-photodiode ekuguquleni izimpawu zokukhanya zibe yi-photocurrent, okuyisilinganiso se-photocurrent namandla okukhanya. Ukukhetha i-photodiode enokusabela okuphezulu kungathuthukisa ngempumelelo ukuzwela kwe-Balance Photodetector.
2. Ububanzi be-bandwidth
I-bandwidth imelela imvamisa yesignali lapho i-amplitude yesignali yokukhipha ye-Balance Photodetector ibola khona ngo-3dB, futhi ihlobene ne-parasitic capacitance ye-photodiode, usayizi we-transimpedance, kanye nomkhiqizo we-gain bandwidth we-operating amplifier.
3. Isilinganiso sokwenqatshwa kwemodi evamile
Isilinganiso sokwenqatshwa kwemodi evamile sisetshenziselwa ukukala izinga lokucindezelwa kwezimpawu zemodi evamile ngabahloli abalinganiselayo, kanti imikhiqizo yezentengiselwano ngokuvamile idinga ukwenqatshwa kwemodi evamile okungenani okungu-25dB.
4.NEP
Amandla Okulingana Nomsindo: Amandla esignali yokufaka adingekayo kusilinganiso sesignali kuya komsindo esingu-1, okuyipharamitha ebalulekile yokulinganisa ukusebenza komsindo wesistimu. Izingxenye eziyinhloko zomsindo wokuthola olinganiselayo umsindo wokusabalala kwe-optical kanye nomsindo kagesi.
Ukusetshenziswa kwe-Balance Photodetector (Optoelectronic Balance Detector)
Eminyakeni yamuva nje, i-Balance Photodetector isetshenziswe kabanzi emikhakheni efana ne-laser wind radar, ukulinganisa ukudlidliza kwe-laser, ukuzwa kwe-fiber optic, ukutholwa kokukhanya okubuthakathaka, ukutholwa kwe-spectral, ukutholwa kwegesi, njll. Ucwaningo ngesivinini esiphezulu, i-bandwidth ephezulu, umsindo ophansi, isilinganiso sokwenqatshwa kwemodi evamile ephezulu, kanye nokuzwela okuphezulu kwama-detector alinganiselayo kwenze intuthuko futhi luthuthukela ekuhlanganisweni okuphezulu kanye nokusetshenziswa kwamandla okuphansi ukuze kuhlangatshezwane nezimo ezahlukene zohlelo lokusebenza.
Isikhathi sokuthunyelwe: Feb-06-2025