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Appl. Sci. 2017, 7(11), 1167; doi:10.3390/app7111167

Design and Characterization of a Birefringent-Type Compact Displacement Sensor for Improving Measurement Sensitivity by a Guided-Wave Beam

Department of Electro-Optical Engineering, Southern Taiwan University of Science and Technology, Tainan 71005, Taiwan
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Received: 14 October 2017 / Revised: 28 October 2017 / Accepted: 6 November 2017 / Published: 14 November 2017
(This article belongs to the Section Optics and Lasers)
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Abstract

A compact displacement sensor (CDS) fabricated with the combinations of a birefringent KTP and cylindrical lens is proposed to be applied for optical displacement measurements in a common-path interferometer. To overcome the beam distortion issues of an original laser beam (OLB) in the small radius of the lens, a guided-wave beam (GWB) is proposed to demonstrate that the GWB (having better measurement characteristics than the OLB) is essential to achieve the improved sensitivity of displacement measurements performed by the CDS. View Full-Text
Keywords: guided-wave beam; compact displacement sensor; interferometer; birefringent materials guided-wave beam; compact displacement sensor; interferometer; birefringent materials
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Twu, R.-C.; Yan, N.-Y. Design and Characterization of a Birefringent-Type Compact Displacement Sensor for Improving Measurement Sensitivity by a Guided-Wave Beam. Appl. Sci. 2017, 7, 1167.

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