10 April 2007 High-accuracy fiber-optic shape sensing
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We describe the results of a study of the performance characteristics of a monolithic fiber-optic shape sensor array. Distributed strain measurements in a multi-core optical fiber interrogated with the optical frequency domain reflectometry technique are used to deduce the shape of the optical fiber; referencing to a coordinate system yields position information. Two sensing techniques are discussed herein: the first employing fiber Bragg gratings and the second employing the intrinsic Rayleigh backscatter of the optical fiber. We have measured shape and position under a variety of circumstances and report the accuracy and precision of these measurements. A discussion of error sources is included.
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Roger G. Duncan, Roger G. Duncan, Mark E. Froggatt, Mark E. Froggatt, Stephen T. Kreger, Stephen T. Kreger, Ryan J. Seeley, Ryan J. Seeley, Dawn K. Gifford, Dawn K. Gifford, Alexander K. Sang, Alexander K. Sang, Matthew S. Wolfe, Matthew S. Wolfe, } "High-accuracy fiber-optic shape sensing", Proc. SPIE 6530, Sensor Systems and Networks: Phenomena, Technology, and Applications for NDE and Health Monitoring 2007, 65301S (10 April 2007); doi: 10.1117/12.720914; https://doi.org/10.1117/12.720914

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