Chii chinonzimodulator yechikamu
Phase modulator imodulator yemaziso inogona kudzora phase yelaser beam. Mhando dzakajairika dzephase modulators ndedzePockels box-basedmamodulator emagetsi-opticuye ma modulators e liquid crystal, anogonawo kushandisa shanduko dze thermal fiber refractive index kana shanduko dzehurefu, kana nekutambanudza kuti uchinje hurefu. Ma phase modulators akasiyana-siyana anoshandiswa mumunda we integrated optics, uko chiedza chakagadziriswa chinopararira mu waveguide.
Hunhu hwakakosha hwema phase modulators hunosanganisira: Saizi ye phase modulation (inosarudza modulation index uye simba re sideband) inoda drive voltage modulation bandwidth (modulation frequency range), iyomodulator yemagetsi-opticaliri muhurongwa hweGHz, uye mudziyo unoshandisa thermal effect kana liquid crystal material wakaderera zvikuru pane bandwidth yekushanda kwemudziyo. Inoderedza beam radius ye modulated beam Dimensions yekunze yemudziyo Hunhu uhwu hunosiyana zvakanyanya kune mhando dzakasiyana dzephase modulators. Nokudaro, phase modulators dzakasiyana dzinofanira kushandiswa mumabasa akasiyana-siyana.
Mienzaniso yekushandiswa kwe phase modulator inosanganisira: Phase modulator mu laser resonator ye single-frequency laser inogona kushandiswa pakugadzirisa wavelength, kana active mode-locking (FM mode-locking) ye laser kuti iite phase beam kana ine modulation intensity iri pakati nepakati, inogona kushandiswa mu laser frequency stabilization mechanism, semuenzaniso, Nzira yePell-Drever-Hall inoda phase modulators mumidziyo yakawanda ye interferometer spectral measurement, kazhinji ichishandisa periodic drive signals. Zvimwe zviyero zvinoda frequency combs, iyo inowanikwa nechiitiko che single-frequency beam mu phase modulator. Muchiitiko ichi, phase modulation inowanzo fanirwa kuva yakasimba, kuitira kuti ugone kuwana akawanda side bands. Mu data transmitter ye optical fiber communication system, phase modulator inogona kushandiswa kutsanangura ruzivo rwunotumirwa. Semuenzaniso, nzira ye phase-shift keying inoshandiswa.
Nguva yekutumira: Kubvumbi-08-2025