Makhalidwe ofunikira ndi kupita patsogolo kwaposachedwa kwa Photodetector yothamanga kwambiri

Makhalidwe ofunikira ndi kupita patsogolo kwaposachedwa kwachowunikira zithunzi cha liwiro lalikulu
Ndi chitukuko cha sayansi ndi ukadaulo, kugwiritsa ntchito Photodetector yothamanga kwambiri (gawo lozindikira kuwala) m'magawo ambiri ndi ochulukirapo. Pepala ili lipereka chidziwitso cha 10G yothamanga kwambiriChowunikira zithunzi(module yozindikira kuwala) yomwe imagwirizanitsa photodiode yothamanga kwambiri (APD) ndi amplifier yotsika phokoso, ili ndi single mode/multi-mode fiber coupled input, SMA connector output, ndipo ili ndi high gain, high sensitivity, AC coupled output, ndi flat gain.

Module iyi imagwiritsa ntchito chowunikira cha InGaAs APD chokhala ndi spectral range ya 1100 ~ 1650nm, chomwe chili choyenera machitidwe otumizira ulusi wamagetsi othamanga kwambiri komanso kuzindikira kuthamanga kwa kuwala kwamagetsi othamanga kwambiri. Pankhani yolumikizirana ndi kuwala, kukhudzidwa ndi liwiro la zowunikira ndi zizindikiro zofunika kwambiri zogwirira ntchito. Kukhudzidwa kwakukulu kwa module kumafika -25dBm ndipo mphamvu yamagetsi yokwanira ndi 0dBm, zomwe zimatsimikizira kutumiza deta kodalirika pansi pa mphamvu zochepa za kuwala.
Kuphatikiza apo, gawoli limaphatikizanso preamplifier ndi booster circuit, zomwe zimatha kuchepetsa phokoso bwino ndikukweza chiŵerengero cha chizindikiro ndi phokoso. Chotulutsa cholumikizidwa ndi AC chingachepetse mphamvu ya gawo la DC ndikukweza ubwino wa chizindikiro. Khalidwe la gain flatness limalola gawoli kukhala ndi gain yokhazikika pama wavelengths angapo, zomwe zimapangitsa kuti chizindikirocho chikhale bwino.
Pa ntchito, gawoli limagwiritsidwa ntchito makamaka pozindikira kuthamanga kwa pulse, kulumikizana kwa kuwala kwa malo othamanga kwambiri komanso kulumikizana kwa ulusi wa kuwala kwachangu. Ndi chitukuko cha ukadaulo, kufunikira kwa magawo awa kukukulirakuliranso. Chifukwa chake, chitukuko ndi kugwiritsa ntchito gawoli ndikofunikira kwambiri.
Kagwiridwe ka ntchito ka module ndi kagwiritsidwe ntchito kake kamapangitsa kuti ikhale imodzi mwazofunikira kwambirizida zowunikira zithunzi zapamwambalerolino pamsika. Ili ndi makhalidwe a kugwira ntchito bwino, kukhazikika kwambiri komanso kudalirika kwambiri, ndipo imatha kukwaniritsa zosowa za ntchito m'magawo osiyanasiyana. Patsogolo, ndi kupita patsogolo kosalekeza kwa ukadaulo komanso kufalikira kosalekeza kwa magawo ogwiritsira ntchito, gawoli lidzagwiritsidwa ntchito kwambiri ndikukwezedwa.