Capacitive Displacement Sensors from Lion Precision -  The extremely compact, non-invasive, and multiple-channel interferometric displacement sensor system from attocube aystems AG can detect the spatial position change of a device in translational motion with high precision and megahertz bandwidth. Unlike existing displacement sensors, the attocube sensor is extremely compact as it is entirely based on optical fiber technology operating at telecommunications wavelengths. The patented sensing heads are small enough (sub-centimeter) to fit in tight spaces, and the optical signal containing the interferometric information for displacement is collected remotely through the same telecom fiber that ports the laser light to the sensing head. A quadrature signal of the interferometric beats is generated using a patented technique that measures both the displacement and its direction ...