Photodetector ke sesebelisoa se fetolang mats'oao a leseli hore e be mats'oao a motlakase. Ka semiconductor photodetector, mochine o hlahisoang ke setšoantšo o thabisitsoe ke ketsahalo ea photon o kena potolohong e ka ntle tlas'a motlakase o sebelisoang oa bias 'me o etsa photocurrent e lekantsoeng. Esita le boemong bo phahameng ba karabelo, pin photodiode e ka hlahisa lipara tsa electron-hole ka ho fetisisa, e leng sesebelisoa se se nang phaello ea ka hare. Bakeng sa karabelo e kholo, ho ka sebelisoa avalanche photodiode (apd).
Matla a ho holisa apd ho photocurrent a ipapisitse le phello ea ho thulana ha ionization. Tlas'a maemo a itseng, li-electrone tse potlakisang le masoba li ka fumana matla a lekaneng a ho thulana le lesela ho hlahisa para e ncha ea li-electron-hole pairs. Ts'ebetso ena ke karabelo ea ketane, e le hore lipara tse peli tsa lesoba la elektronike tse hlahisoang ke ho monya leseli li ka hlahisa palo e kholo ea lipara tsa lesoba la elektronike 'me tsa theha photocurrent e kholo ea bobeli. Ka hona, apd e na le karabelo e phahameng le phaello ea ka hare, e ntlafatsang karo-karolelano ea lerata ho sesebelisoa. apd e tla sebelisoa haholo lits'ebetsong tsa puisano tse hole kapa tse nyane tsa optical fiber ka mefokolo e meng ho matla a optical a amohetseng. Hajoale, litsebi tse ngata tsa lisebelisoa tsa optical li na le tšepo e kholo mabapi le menyetla ea apd.
Rofea e ikemetse e ntlafalitse photodetector e kopantseng photodiode le potoloho ea amplifier ea lerata le tlaase, ha e ntse e fana ka lihlahisoa tse fapa-fapaneng, bakeng sa basebelisi ba lipatlisiso tsa saense Fana ka tšebeletso ea boleng ba lihlahisoa, tšehetso ea botekgeniki le tšebeletso e bonolo ka mor'a thekiso. Mohala oa hona joale oa sehlahisoa o kenyelletsa: sesebelisoa sa setšoantšo sa analog se nang le amplification, fumana photodetector e feto-fetohang, photodetector ea lebelo le phahameng, mochine oa 'maraka oa lehloa (APD), mochine oa ho leka-lekanya, joalo-joalo.
Sebopeho
Mefuta e fapaneng: 320-1000nm, 850-1650nm, 950-1650nm, 1100-1650nm, 1480-1620nm
3dBbandwidth: 200MHz-50GHz
Optical fiber coupling output2.5Gbps
Mofuta oa modulator
3dBbandwidt:
200MHz, 1GHz, 10GHz, 20GHz, 50GHz
Kopo
Ho lemoha lebelo le phahameng la optical pulse
Puisano ea optical e potlakileng
Sehokelo sa Microwave
Brillouin optical fiber sensing system
Nako ea poso: Jun-21-2023