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Optimum sensitivities of D-type optical fiber sensor at a specific incident angle

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Abstract

The optimum incident angle for a 4 mm long and 4 μm core thickness D-type optical fiber sensor in the intensity measurements is near at 89°. The sensitivity is higher than 40 (1/RIU) and its resolution is better than 2.5×10-5 RIU. This sensor is used to detect the refractive index or gas or liquid concentration in real-time, and it has some merits such as small, simple and inexpensive and provides an in vivo test.

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Authors and Affiliations

  1. Department of Electro-Optical Engineering, National Formosa University, No. 64 Wunhua Road, Huwei Yunlin, 632, Taiwan, R.O.C.

    M.-H. Chiu, M.-H. Chi & C.-H. Shih

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  1. M.-H. Chiu
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  2. M.-H. Chi
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  3. C.-H. Shih
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Correspondence to M.-H. Chiu.

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PACS

42.81.Pa; 07.07.Df; 73.20.Mf; 42.62.Eh; 07.60.Vg

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Chiu, MH., Chi, MH. & Shih, CH. Optimum sensitivities of D-type optical fiber sensor at a specific incident angle. Appl. Phys. A 89, 413–416 (2007). https://doi.org/10.1007/s00339-007-4136-0

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  • DOI: https://doi.org/10.1007/s00339-007-4136-0

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