High-speed electro-optic modulator

摘要: An optical modulator is provided to control the intensity of a transmitted or reflected light. In transmission mode, separator splits arbitrarily polarized light into two polarization rays and one made travel separate path from other. A recombiner causes recombine at an output unless electro-optic phase retarder changes rays, in which case, both them miss by amount function voltage on retarder. normally-off version with low mode dispersion obtained changing orientation recombiner. normally-on passive direction rotation. Similar results can be reflection where input are same side modulator. Versions using GRIN lens particularly suited modulation out back fiber-optic cables. The device operated as variable attenuator, switch, high speed insensitive preferred material for hot-pressed ceramic lead lanthanum zirconate titanate composition.