Kushandiswa kweElectro-Optic Modulation MuOptical Communication

/application-of-electro-optic-modulation-in-optical-communication/

Iyo sisitimu inoshandisa masaisai emwenje kutumira ruzivo rwekurira.Iyo laser inogadzirwa nelaser inova mutsara wakasarudzika mwenje mushure mepolarizer, uye wobva waita denderedzwa polarized mwenje mushure meiyo λ / 4 wave ndiro, kuitira kuti izvo zviviri zvikamu zvepolarization (o mwenje uye e mwenje) zviburitse π / 2 chikamu mutsauko usati wapinda mukati. electro-optical crystal, kuitira kuti modulator ishande munzvimbo inofungidzirwa yemutsara.Panguva imwechete iyo laser inopfuura ne electro-optic crystal, kunze kwemhepo inoshandiswa kune electro-optic crystal.Voltage iyi ndiyo chiratidzo cheruzha chinofanira kufambiswa.

Kana iyo voltage yawedzerwa kune electro-optic crystal, iyo refractive index uye zvimwe zve optical zvimiro zvekristaro shanduko, shandura iyo polarization mamiriro emwenje wave, kuti mwenje unotenderera unove elliptically polarized mwenje, uye wobva waita linearly polarized mwenje. kuburikidza nepolarizer, uye kusimba kwechiedza kunogadziriswa.Panguva ino, iyo mwenje wave ine ruzivo rwekurira uye inopararira munzvimbo yemahara.Iyo photodetector inoshandiswa kugamuchira iyo modulated optical chiratidzo panzvimbo yekugamuchira, uye ipapo kutendeuka kwedunhu kunoitwa kushandura chiratidzo chemaziso kuita chiratidzo chemagetsi.Chiratidzo chezwi chinodzoreredzwa nedemodulator, uye pakupedzisira kufambisa kwemaziso kwechiratidzo chezwi kunopedzwa.Iyo inoshandiswa voltage ndiyo inofambiswa inonzwika chiratidzo, inogona kuve kubuda kwerekodhi rekodhi kana tepi drive, uye ichokwadi chiratidzo chemagetsi chinosiyana nekufamba kwenguva.