Our probe systems can be used as an instrument for real-time measurement of wideband RF signals in microwave circuits and systems. They can also be utilized in a unique way for a variety of other detection and sensing applications where the presence of metallic parts is highly undesirable such as directed energy and high power microwave systems. Using a robust, patented, optical processing technology, the probes can have standoff distances up to 50 meters from the physical location of the optical mainframe system. Due to the fast response of the EO crystal, it is possible to measure extremely high-bandwidth signals with the normal SNR limitations of wideband signal detection. Using this capability, EMAG Technologies Inc. has developed the world’s first fiber-based real-time polarimetric electric field sensor system for the measurement of high-power microwave signals. The figure below shows an example of a real time measurement of a 6.6ns pulse with 10kV/m peak field strength. The upper trace shown on the oscilloscope is the received signal, and the lower trace is the detected signal.
The figures on the right and below show older generation 3-channel and 4-channel [[NeoScan]] system configurations, respectively, developed by EMAG Technologies' Opteos Division. You can see three or four FC/APC optical fiber connectors for the field probes along with three or four SMA connectors for the RF output signals. The latter can be directly fed into a multi-channel high speed digital sampling oscilloscope to display the detected temporal waveforms. The same time domain output signals can be down-converted to a lower IF frequency and digitized for further signal processing.
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