High-definition temperature sensing based on the natural Rayleigh backscatter in optical fiber delivers a virtually continuous line of temperature measurements with sub-millimeter spatial resolution.
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Distributed temperature sensing (DTS) measures temperature distribution over the length of an optical fiber cable using the fiber itself as the sensing element.
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A fiber-optic sensor is a that uses either as the sensing element ("intrinsic sensors"), or as a means of relaying signals from a remote sensor to the electronics that process the signals ("extrinsic sensors").
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In this paper we describe a probing method, referred to as Fiber Deflection Probing (FDP), for use on Coordinate Measuring Machines (CMM). Examples include the inner surfaces of micro-drilled holes, narrow gaps or complex free-form surfaces. The optical inspection technique offers a fast, contactless and wear-free way of measuring micro-structures and distances. Measurement of diameter and form of small holes is of great importance in applications such as fuel injector nozzles, fiber optic ferrules, wire drawing dies, holes in printed circuit boards and medical apparatus such as syringes, etc.
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Today, already with over 500 standard, application optic solutions to leading manufacturers, especially in the semiconductor, the consumer electronics and the car electronics industry, as well as for food p.
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