Electro-optical effect electric field probe for EMF measurement in harsh environments!
eoProbe & eoSense
Light probes and photoelectric sensors available for use in water and oil.
The eoProbe is a photoelectric field sensor that measures one axis based on electro-optical technology (the Pockels effect). This ultra-broadband sensor enables accurate measurements in almost any location and environment (air, liquid, gas, vacuum) under harsh conditions. The Kapteos system has achieved innovative electric field measurements through the electro-optical probe eoProbe and the high-end converter eoSense, utilizing this Pockels effect. Its measurement performance exceeds several MV/m and provides ultra-high bandwidth from 40 Hz to over 100 GHz, along with the most advanced features in extremely harsh environments such as underwater. <Comprehensive Measurement of Electric Field Vectors> The Pockels effect based on electro-optical technology allows for the measurement of the three components and phase of the vector electric field. Additionally, by using two types of probes—longitudinal and transverse—with the eoSensor converter, it is possible to accurately identify and measure the three-axis vector. <Non-Invasive Measurement> The active components of the sensor, which do not use metal parts, are essentially crystals. The measurement signal is transmitted by a laser within the fiber optic link. Electric field measurements inside animal tissues in MRI systems, as well as inside fruits or vegetables, are also possible.
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basic information
【Examples of Specific Projects】 - Measurement of electric field exposure from military communication antennas to infantry - Deterioration analysis of 25kV cables - Electric field mapping of 25kV insulators through partial discharge analysis - Analysis of partial and total discharge in medium voltage systems - 2D electric field mapping on HV busbars - Electric field mapping of three-phase cable splices at 6.6 kV - Mapping of horn antennas or antennas of other shapes - On-site plasma mapping in different environments such as biological or magnetic - Absolute measurement of electromagnetic pulses (EMP) generated by laser-plasma interactions in the nanosecond range - Measurement of plasma electric field penetration depth within biological liquids - Electric field measurements of 3 to 4.7 Tesla - Vector electric field mapping in a phantom exposed to 100 MHz EM waves generated by a hyperthermia applicator in an MRI device
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Applications/Examples of results
**Evaluation of Specific Absorption Rate (SAR)** The evaluation of specific absorption rate allows for the measurement of electric field exposure to the human body. These measurements are based on standards and must be conducted within a phantom (new European directive). **Medium and High Voltage (HV) Electrical Components** By measuring the electric fields of medium and high voltage systems and components, defects such as partial discharge, aging of components, and even electric field exposure to humans can be analyzed. **Antenna** Electric field measurements within antennas require close-range measurements over a very wide frequency bandwidth. **Plasma** This pertains to the measurement of very strong electric fields (kV/m to MV/m) for ionizing gases containing charged particles. **MRI** Defines human exposure to electromagnetic fields. Radio frequency field analysis requires very high spatial resolution. Measurements must be conducted under magnetic fields of 3 or 4.7 Tesla, depending on the MRI model. **EMC** Covers a variety of applications including variable speed drives, solar or wind turbine inverters, uninterruptible power supplies (UPS), welding, railways, mining, marine, and aviation.
Detailed information
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Electro-Optical Probe eoProbe <Description> The active component of the sensor, which does not use metal parts (metal-free), is fundamentally a crystal. The measurement signal is transmitted by a laser within a fiber optic link, providing the following advantages: ■ The measured electric field does not affect the measurement, unlike conventional antenna-based probes. ■ The probe and converter can be up to 100m apart. - Particularly ultra-low loss at GHz frequencies. - Ensures accurate measurements unaffected by radiated electromagnetic fields. It is also possible to measure the electric field inside animal tissues, fruits, or vegetables within an MRI system.
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Pockels effect
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Electro-optical probe eoProbe specifications
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Electro-optical probe eoProbe lineup
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Advantages of the electro-optical probe eoProbe
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Optoelectronic Converter eoSense <Description> The optoelectronic converter eoSense is used with the eoProbe sensor and dedicated Kapteos software or proprietary software via an Ethernet port. eoSense can directly connect and operate with up to three eoProbes. It converts optical signals transmitted from the eoProbe into electrical signals that can be analyzed by oscilloscopes, spectrum analyzers, and other signal processing equipment. It includes real-time processing of antenna factors (AF) for measuring absolute electric fields (magnitude, phase). Each eoSense comes with a periodic test report valid for two years. For frequencies above 40GHz, it is available on a request basis.
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Optoelectronic Converter eoSense Advantages
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Software 3CH
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Comprehensive Electric Field Measurement System - eoSense: Photoelectric Converter (from 1 to 3 channels) - eoProbe: Optical Probe (1 probe measures one axis of the electric field) - eoSwitch: Optical switch for selecting probes from multiple probes - eolink: Optical extension lead - eoCal: Electric field applicator for calibrating probes - eoPod: Holder for maintaining up to 3 probes
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Company information
As a company that provides unique and innovative solutions in EMC testing and general measurement, Wavecrest Corporation is active in this field. The increasingly sophisticated electronic and communication environment not only affects the performance of its products but also serves as a social infrastructure that impacts the overall safety of society, requiring high levels of safety and reliability. We aim to provide new products and solutions that the market needs, without being constrained by traditional testing methods and equipment.