New Electro-Optic Microwave-Lightwave Converters Using Channel Optical Waveguides and Microstrip Patch-Antennas with Narrow Gaps

摘要

New electro-optic microwave-lightwave converters using channel optical waveguides and microstrip patch-antennas with narrow gaps on ferroelectric optical crystals were proposed. Basic operations for receiving a wireless microwave signal and directly converting it to a lightwave signal were demonstrated successfully using a prototype device with simple and compact structure. These devices operate with no external power supply and no additional modulation electrode. Therefore the microwave-lightwave conversion with low microwave distortion can be obtained. The advanced microwave-lightwave converters using patch-antennas with a pair of narrow gaps and their applications are also discussed.