Abstract
AbstractA small electromagnetic field sensor in the frequency range from 50 MHz to 2 GHz was developed that consisted of a Mach‐Zehnder waveguide modulator and a micro annular antenna, which was directly integrated with the traveling‐wave electrode of the Mach‐ Zehnder waveguide modulator on the same LiNbO3 substrate. The size of the sensor is 45 mm × 10 mm × 1 mm, demonstrating that the new kind of design successfully miniaturized the sensor size. The average minimum detectable electromagnetic field intensity of the sensor is 3.9 mV/m. The result indicates that the new kind of sensor is of potential interest for future application. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 3125–3128, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23868
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