Kuchinja kwechiedza (optical modulation) kunoreva kuwedzera ruzivo kumagetsi anofambisa chiedza, kuitira kuti chimwe chinhu chinochinja padanho remagetsi anofambisa chiedza nekuchinja kwechiratidzo chekunze, kusanganisira simba remagetsi anofambisa chiedza, phase, frequency, polarization, wavelength nezvimwewo. Mafungu emwenje anofambisa ruzivo anotumirwa mufiber, oonekwa ne photo detector, uye obva abvisa ruzivo rwunodiwa.
Hwaro hwemuviri hwe electro-optic modulation i electro-optic effect, kureva kuti, pasi pekushanda kwesimba remagetsi rinoshandiswa, refractive index yemamwe makristaro ichachinja, uye kana wave yechiedza ichipfuura nepakati pechinhu ichi, hunhu hwayo hwekutumira huchakanganiswa uye huchachinjwa.
Kune mhando dzakawanda dze electro-optic modulators (EO modulator), dzinogona kukamurwa muzvikamu zvakasiyana zvichienderana nemazinga akasiyana.
Zvichienderana nechimiro chakasiyana cheelectrode, EOM inogona kukamurwa kuita lumped parameter modulator uye travelling-wave modulator.
Zvichienderana nechimiro chakasiyana chewaveguide, EOIM inogona kukamurwa kuita Msch-Zehnder interference intensity modulator uye directional coupling intensity modulator.
Zvichienderana nehukama huripo pakati pegwara rechiedza negwara remagetsi, EOM inogona kukamurwa kuita mamodulators enguva refu uye mamodulators enguva dzose. Modulator yemagetsi enguva refu ine zvakanakira zvechimiro chiri nyore, kushanda kwakasimba (zvisinei ne polarization), isina birefringence yechisikigo, nezvimwewo. Dambudziko rayo nderekuti voltage yehafu yemafungu yakakwira zvakanyanya, kunyanya kana modulation frequency yakakwira, kurasikirwa kwesimba kwacho kwakakura.
Electro-optical intensity modulator chigadzirwa chakabatanidzwa zvikuru cheRofea chine kodzero dzepfungwa dzakazvimiririra. Chishandiso ichi chinobatanidza electro-optical intensity modulator, microwave amplifier uye driving circuit yayo kuita chimwe chete, izvo hazvingorerutsi kushandiswa kwevashandisi chete, asiwo zvinovandudza zvikuru kuvimbika kweMZ intensity modulator, uye zvinogona kupa masevhisi akagadzirirwa zvinoenderana nezvinodiwa nemushandisi.
Chinhu:
⚫ Kurasikirwa kwakaderera kwekupinza
⚫ bandwidth inoshanda zvakanyanya
⚫ Nzvimbo yekushanda inogadziriswa uye inogadziriswa
⚫ AC 220V
⚫ Zviri nyore kushandisa, pane mukana wekushandisa chiedza
Kushandiswa:
⚫Sisitimu yekushandura kwekunze inomhanya zvakanyanya
⚫Sisitimu yekudzidzisa uye yekuedza yekuratidzira
⚫Jenareta yechiratidzo cheoptical
⚫Optical RZ, sisitimu yeNRZ
Nguva yekutumira: Gumiguru-07-2023