Hoʻolauna i nā mea ʻike kiʻi

A mea ʻike kiʻihe mea hana ia e hoʻololi i nā hōʻailona māmā i nā hōʻailona uila. I loko o kahimea ʻike kiʻi semiconductor, komo ka mea lawe kiʻi i hoʻoulu ʻia e ka photon hanana i ke kaapuni waho ma lalo o ke volta bias i hoʻopili ʻia a hana i kahi photocurrent hiki ke ana ʻia. ʻOiai ma ka pane kiʻekiʻe loa, hiki i kahi pin photodiode ke hana i kahi pālua o nā hui electron-hole ma ka nui, ʻo ia kahi mea me ka loaʻa ʻole o loko. No ka pane nui ʻana, hephotodiode avalanchehiki ke hoʻohana ʻia (apd).

Hoʻokumu ʻia ka hopena hoʻonui o ka apd ma ke kahe kiʻi ma ka hopena collision ionization. Ma lalo o kekahi mau kūlana, hiki i nā electrons a me nā lua i hoʻolalelale ʻia ke loaʻa ka ikehu lawa e kuʻi me ka lattice e hana i kahi pālua hou o nā hui electron-hole. He hopena kaulahao kēia kaʻina hana, i hiki i ka pālua o nā hui electron-hole i hana ʻia e ka omo ʻana o ka mālamalama ke hana i kahi nui o nā hui electron-hole a hana i kahi kahe kiʻi lua nui. No laila, loaʻa iā apd ka pane kiʻekiʻe a me ka loaʻa kūloko, kahi e hoʻomaikaʻi ai i ka ratio signal-to-noise o ka hāmeʻa. E hoʻohana nui ʻia ʻo apd i nā ʻōnaehana kamaʻilio fiber optical mamao a liʻiliʻi paha me nā palena ʻē aʻe ma ka mana optical i loaʻa. I kēia manawa, nui nā loea o nā mea hana optical e manaʻolana nui nei e pili ana i nā manaʻolana o apd.

Ua hoʻomohala kūʻokoʻa ʻo Rofea i ka photodetector i hoʻohui ʻia i ka photodiode a me ke kaapuni hoʻonui walaʻau haʻahaʻa, me ka hāʻawi ʻana i nā huahana like ʻole, no nā mea hoʻohana noiʻi ʻepekema Hāʻawi i ka lawelawe hoʻopilikino huahana maikaʻi, ke kākoʻo loea a me ka lawelawe ma hope o ke kūʻai aku. ʻO ka laina huahana o kēia manawa e pili ana i: photodetector hōʻailona analog me ka amplification, loaʻa photodetector hiki ke hoʻololi ʻia,mea ʻike kiʻi wikiwiki, mea ʻike mākeke hau (APD), mea ʻike kaulike, a pēlā aku.

Hiʻona
Ka laulā spectral：320-1000nm、850-1650nm、950-1650nm、1100-1650nm、1480-1620nm
3dB bandwidth：200MHz-50GHz
Ka hoʻopili ʻana o ke kaula uila optical output2.5Gbps

ʻAno modulator
3dBbandwidt：
200MHz, 1GHz, 10GHz, 20GHz, 50GHz

Noi
Ka ʻike ʻana i ka pulse optical wikiwiki
Kamaʻilio optical wikiwiki
Loulou microwave
ʻŌnaehana ʻike fiber optical Brillouin