Iyini i-phase modulator

Kuyinii-modulator yesigaba

I-Phase modulator iyi-optical modulator engalawula isigaba somsebe we-laser. Izinhlobo ezivamile zama-phase modulator asekelwe ebhokisini le-Pockelsama-modulators e-electro-optickanye nama-modulators e-liquid crystal, angasebenzisa futhi izinguquko ze-thermal fiber refractive index noma izinguquko zobude, noma ngokwelula ukushintsha ubude. Ama-modulators ahlukahlukene esigaba asetshenziswa emkhakheni we-integrated optics, lapho ukukhanya okuguquliwe kusakazeka khona ku-waveguide.

Izakhiwo ezibalulekile zama-phase modulators zifaka: Usayizi we-phase modulation (onquma inkomba ye-modulation kanye namandla ahlobene e-sideband) udinga i-bandwidth ye-drive voltage modulation (ububanzi bemvamisa ye-modulation), i-i-modulator ye-electro-opticalikwi-GHz, futhi idivayisi esebenzisa umphumela wokushisa noma izinto zekristalu eliwuketshezi incane kakhulu kune-bandwidth yokusebenza kwe-aperture yedivayisi. Ikhawulela irediyasi yomsebe womsebe oguquliwe Ubukhulu bangaphandle bedivayisi Lezi zakhiwo ziyahlukahluka kakhulu ezinhlotsheni ezahlukene zama-phase modulators. Ngakho-ke, ama-phase modulators ahlukene kudingeka asetshenziswe ezinhlelweni ezahlukene ezisebenzayo.

Izibonelo zezinhlelo zokusebenza ze-phase modulator zifaka: I-phase modulator ku-laser resonator ye-single-frequency laser ingasetshenziswa ekulungiseni ubude be-wavelength, noma i-active mode-locking (FM mode-locking) ye-laser ukuze ifake i-beam uma inamandla okuguquguquka aphakathi nendawo, ingasetshenziswa ngendlela yokuzinzisa imvamisa ye-laser, isibonelo, Indlela ye-Pell-Drever-Hall idinga ama-phase modulator kumadivayisi amaningi okulinganisa ama-spectral e-interferometer, ngokuvamile esebenzisa amasignali okushayela avamile. Ezinye izilinganiso zidinga ama-frequency combs, atholakala ngokushaya i-single-frequency beam ku-phase modulator. Kulokhu, i-phase modulation ngokuvamile idinga ukuba namandla, ukuze uthole ama-side band amaningi. Ku-data transmitter yesistimu yokuxhumana ye-optical fiber, i-phase modulator ingasetshenziswa ukunquma ulwazi oludlulisiwe. Isibonelo, kusetshenziswa indlela yokufaka i-phase-shift.