Ukusetshenziswa Kwe-Electro-Optic Modulation In Optical Communication

/uhlelo lokusebenza-lwe-electro-optic-modulation-in-optical-communication/

Uhlelo lusebenzisa amaza alula ukudlulisa ulwazi lomsindo. I-laser ekhiqizwe i-laser iba ukukhanya kwe-polarized ngemuva kwe-polarizer, bese iba ukukhanya okuyisiyingi ngemuva kwepuleti le-λ / 4 wave, ukuze izingxenye ezimbili ze-polarization (o ukukhanya no-e) zikhiqize umehluko wesigaba esingu-π / 2 ngaphambi kokungena endaweni. ikristalu ye-electro-optical, ukuze imodyuli isebenze endaweni ecishe ibe ngumugqa. Ngesikhathi esifanayo lapho i-laser idlula i-electro-optic crystal, i-voltage yangaphandle isetshenziswa ku-crystal electro-optic. Le voltage iyisiginali yomsindo okufanele idluliselwe.

Lapho i-voltage yengezwa kukristalu ye-electro-optic, inkomba ye-refractive kanye nezinye izici zokubona zokushintsha kwekristalu, shintsha isimo se-polarization segagasi lokukhanya, ukuze ukukhanya okuyisiyingi kube ukukhanya kwe-elliptically polarized, bese kuba ukukhanya kwe-polarized linearly. ngokusebenzisa i-polarizer, futhi amandla okukhanya ayashintshwa. Ngalesi sikhathi, igagasi lokukhanya liqukethe ulwazi lomsindo futhi lisakazeka endaweni yamahhala. I-photodetector isetshenziselwa ukwamukela isignali ye-optical eguquliwe endaweni yokwamukela, bese ukuguqulwa kwesifunda kwenziwa ukuze kuguqulwe isignali ye-optical ibe isignali kagesi. Isignali yomsindo ibuyiselwa yi-demodulator, futhi ekugcineni ukuhanjiswa kwe-optical yesignali yomsindo kuqediwe. I-voltage esetshenziswayo iyisiginali yomsindo edluliswayo, okungaba ukuphuma kwerekhoda yomsakazo noma idrayivu ye-tape, futhi empeleni iyisiginali ye-voltage ehluka ngokuhamba kwesikhathi.