Makhalidwe ofunikira komanso kupita patsogolo kwaposachedwa kwa Photodetector yothamanga kwambiri

Makhalidwe ofunikira ndi kupita patsogolo kwaposachedwa kwahigh speed Photodetector
Ndi chitukuko cha sayansi ndi ukadaulo, kugwiritsa ntchito Photodetector yothamanga kwambiri (Optical kuzindikira module) m'magawo ambiri ndi ochulukirapo.Pepala ili lidzayambitsa 10G yothamanga kwambiriPhotodetector(Optical Detective module) yomwe imaphatikiza mawonekedwe othamanga kwambiri a avalanche photodiode (APD) ndi amplifier yaphokoso lotsika, imakhala ndi njira imodzi/mipikisano yama fiber ophatikizana, kutulutsa kolumikizira kwa SMA, komanso kupindula kwakukulu, kukhudzika kwakukulu, kutulutsa kophatikizana kwa AC. , ndi phindu lathyathyathya.

Gawoli limagwiritsa ntchito detector ya InGaAs APD yokhala ndi mawonekedwe a 1100 ~ 1650nm, omwe ali oyenerera machitidwe othamanga kwambiri a fiber optical transmissions ndi kuthamanga kwapamwamba kwambiri.Pankhani ya kulumikizana kwa kuwala, kukhudzika ndi kuthamanga kwa ma photodetectors ndizofunikira kwambiri zowonetsera.Kutengeka kwakukulu kwa gawoli kumafika -25dBm ndipo mphamvu ya kuwala kwa machulukitsidwe ndi 0dBm, kuonetsetsa kuti kufalikira kwa data kudali kodalirika pansi pamikhalidwe yotsika yamagetsi.
Kuphatikiza apo, gawoli limaphatikizanso gawo la preamplifier ndi booster circuit, lomwe limatha kuchepetsa phokoso ndikuwongolera chiŵerengero cha phokoso.Kutulutsa kophatikizana kwa AC kumatha kuchepetsa kukopa kwa gawo la DC ndikuwongolera mawonekedwe a siginecha.Kupindula kwa flatness kumapangitsa kuti module ikhale ndi phindu lokhazikika pamafunde angapo, ndikupititsa patsogolo khalidwe la chizindikiro.
M'malo ogwiritsira ntchito, gawoli limagwiritsidwa ntchito makamaka pakuwona kuthamanga kwachangu, kuyankhulana kwapamwamba kwambiri kwa malo opangidwa ndi kuwala komanso kuyankhulana kwapamwamba kwambiri.Ndi chitukuko chaukadaulo, kufunikira kwazinthu izi kukuchulukiranso.Chifukwa chake, kukulitsa ndi kugwiritsa ntchito gawoli ndikofunikira kwambiri.
Kuchita kwa module ndikugwiritsa ntchito kumapangitsa kuti ikhale imodzi mwazopambana kwambirima photodetectors apamwambapamsika lero.Ili ndi mawonekedwe a magwiridwe antchito apamwamba, kukhazikika kwakukulu komanso kudalirika kwakukulu, ndipo imatha kukwaniritsa zofunikira zamagulu osiyanasiyana.Pachitukuko chamtsogolo, ndikupita patsogolo kwaukadaulo ndikukula kosalekeza kwa magawo ogwiritsira ntchito, gawoli lidzagwiritsidwa ntchito kwambiri ndikulimbikitsidwa.