ʻO ka mea nānā kiʻi kiʻi kahi mea e hoʻololi i nā hōʻailona māmā i nā hōʻailona uila.I loko o kahi kiʻi kiʻi semiconductor, ke kiʻi kiʻi i hoʻohauʻoli ʻia e ka photon i hana ʻia e komo i ke kaapuni waho ma lalo o ka volta bias i hoʻopili ʻia a hana i kahi photocurrent hiki ke ana.ʻOiai ma ka pane kiʻekiʻe loa, hiki i kahi photodiode pin ke hana i nā pālua electron-hole i ka hapa nui loa, ʻo ia kahi mea me ka loaʻa ʻole o loko.No ka pane ʻoi aku, hiki ke hoʻohana ʻia kahi avalanche photodiode (apd).
Hoʻokumu ʻia ka hopena amplification o apd ma ka photocurrent i ka hopena hoʻoheheʻe ionization.Ma lalo o kekahi mau kūlana, hiki i nā electrons accelerated a me nā puka ke loaʻa i ka ikehu e hoʻokūkū ai me ka lattice e hana i kahi pālua hou o nā lua electron-hole.ʻO kēia kaʻina hana he kaulahao kaulahao, i hiki ai i nā pālua electron-hole i hana ʻia e ka absorption māmā ke hana i kahi helu nui o nā lua electron-hole a hana i kahi photocurrent lua nui.No laila, loaʻa i ka apd ka pane kiʻekiʻe a me ka loaʻa o loko, kahi e hoʻomaikaʻi ai i ka ratio signal-to-noise o ka hāmeʻa.E hoʻohana nui ʻia ʻo apd ma nā ʻōnaehana kamaʻilio fiber optical lōʻihi a liʻiliʻi me nā palena ʻē aʻe i ka mana optical i loaʻa.I kēia manawa, nui ka manaʻo o ka poʻe loea optical e pili ana i nā manaʻo o apd.
Hoʻokumu kūʻokoʻa ʻo Rofea i ka photodetector integrated photodiode a me ka haʻahaʻa leo amplifier circuit, ʻoiai e hāʻawi ana i nā ʻano huahana like ʻole, no nā mea hoʻohana noiʻi ʻepekema Hāʻawi i ka lawelawe hoʻoponopono huahana maikaʻi, kākoʻo ʻenehana a me ka lawelawe maʻalahi ma hope o ke kūʻai aku.Aia ka laina huahana o kēia manawa: ka mea nānā kiʻi hōʻailona analog me ka amplification, loaʻa ka photodetector hiki ke hoʻololi ʻia, kiʻi kiʻi wikiwiki kiʻekiʻe, ʻike maka hau hau (APD), ʻike kaulike, etc.
Hiʻona
ʻO ka laulā ākea: 320-1000nm, 850-1650nm, 950-1650nm, 1100-1650nm, 1480-1620nm
3dBbandwidth:200MHz-50GHz
ʻO ka hoʻopili ʻana i ka fiber optical output2.5Gbps
ʻAno modulator
3dBbandwidt:
200MHz,1GHz,10GHz,20GHz,50GHz
Palapala noi
Kiʻekiʻe-wikiwiki optical pulse ike
Kūkākūkā optical kiʻekiʻe
loulou microwave
ʻO Brillouin ʻōnaehana ʻike fiber optical
Ka manawa hoʻouna: Iune-21-2023