Integrated optical electric field sensor with telescopic dipole

An integrated optical electric field sensor based on a Mach-Zehnder interferometer with the telescopic dipole is designed and fabricated, and its electrodes are segmented and connected with a telescopic dipole. The measured results show that when the frequency response is from 10 kHz to 6 GHz with the antenna length of 55 mm, the minimum detectable electric field of 20 mV/m can be obtained, and the linear dynamics range can reach 90 dB at 250 MHz. OCIS codes: 130.6010, 130.3120, 230.4110. In the last few years, interest in electromagnetic field (EMF) sensors has widely increased[1−4]. EMF mea-surement has a critical part in various scientific and technical areas, such as process control, electric field monitoring in medical apparatuses, ballistic control, elec-tromagnetic compatibility (EMC) measurements, and microwave-integrated circuit testing[4]. The conventional EMF measurement systems currently use metallic probes which can disturb the measured EMF and make senso