High-speed electro-optic modulators utilizing polarization-reversed structures

The polarization reversal technology of ferroelectric optical crystals enables us to construct new high-speed electro-optic modulators with advanced functions; quasi-velocity-matched phase/intensity modulators, single-side band (SSB) /frequency-shift-keying (FSK) modulators operated with a single microwave signal, and duo-binary modulators. These devices are attractive for applications in many microwave photonic systems.