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We propose a new wireless electro-optic (EO) modulator using multi-layered stacked patch-antennas with a narrow gap for radio-over-fiber systems. This device uses a structure of vertically stacked patch antennas like the Yagi-Uda antenna, with an EO crystal and a low-dielectric-constant material hybrid substrate. The electric field for optical modulation and the patch length are increased by using...
We have proposed a new electro-optic signal converter which enables us to convert wireless millimeter-wave signals to lightwave signals. This is based on a LiNbO3 guided-wave optical modulator combined with vertically-stacked planar patch antennas embedded with a narrow (∼5 µm) gap. Utilizing the stacked structure, the antenna gain, antenna area, and electric field for optical modulation are increased,...
Metamaterial electric-LC resonators on an electro-optic modulators are proposed for wireless THz-lightwave signal conversion. Strong electric field can be induced on the resonators by wireless THz irradiation and converted to lightwave signals through electro-optic modulation.
We propose a new wireless millimeter-wave (MMW) to lightwave (LW) signal converter using an electro-optic crystal suspended to narrow-gap-embedded patch-antennas on a low-k dielectric substrate. Wireless MMW signals can be received by the patch-antennas and converted to LW signals by use of the MMW electric field across the narrow-gap for electro-optic (EO) modulation. An aperture area of the patch-antennas...
New electro-optic microwave-lightwave converters using a patch antenna embedded with a narrow gap are proposed. Basic operations for the conversion from wireless to optical signals were demonstrated at 18 GHz with no external power supply.
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