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A novel periodic micro-tapering glass fiber based on rare-earth-doped glass fiber and its bending sensor application are investigaled. The material of fiber consists of two types of lead silicate glasses, one is for core, and the is for cladding. And it has the performances of good plasticity and easy taper. The key body of the sensor is made of the rare-earth-doped fiber which is heated by the focused CO2 laser beam in periodic and equal spacing. In this paper we constructe an intensity modulated bending sensor measurement system based on the sensor body, high resolution moving platform and optic testing platform. Principle research and experiment testing show that the designed bending sensor measurement unit has a high bending sensitivity of -28.2W/m and a low measurement error of lass than ± 1%, which is of significance for possible applications in engineering.
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Keywords:
- rare-earth-doped fibers /
- micro-taper /
- bending sensor /
- intensity-modulating
[1] Kersey A D, Davis M A, Patrick H J, LeBlanc M, Koo K P, Askins C G, Putnam M A, Friebele E J 1997 Journal of Lightwave Technology 15 1442
[2] Bhatia V, Vengsarkar A M 1996 Optics Letters 21 692
[3] Murphy K A, Gunther M F, Vengsarkar A M, Claus R O 1991 Opt. Lett. 16 273
[4] Kao T W, Taylor H F 1996 Opt. Lett. 21 615
[5] Guo W G, Yang X F, Luo S J, Li Y N, Tu C H, Lü F Y, Wang H J, Li E B, Lü C 2007 Acta Phys. Sin. 56 308 (in Chinese) [郭文刚、杨秀峰、罗绍均、李勇男、涂成厚、吕福云、王宏杰、李恩邦、吕 超 2007 56 308]
[6] Wang Z F, Hu Y M, Meng Z, Luo H, Ni M 2009 Acta Phys. Sin. 58 8352 (in Chinese) [王泽锋、胡永明、孟 洲、罗 洪、倪 明 2009 58 8352]
[7] Babchenko A, Weinberger Z, Itzkovich N, Maryles J, 2006 Measurement Science and Technology 17 1157
[8] Kumar V V R, George A, Reeves W, Knight J, Russell P, Omenetto F, Taylor A 2002 Opt. Express 10 1520
[9] Ruan Y, Foo T C, Warren-Smith S, Hoffmann P, Moore R C, Ebendorff-Heidepriem H, Monro T M 2008 Opt. Express 16 18514
[10] DebsJ E, Ebendorff-Heidepriem H, Quinton J S, Monro T M 2009 IEEE Journal of Lightwave Technology 27 576
[11] Erdogan T 1997 Journal of Lightwave Technology 15 1277
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[1] Kersey A D, Davis M A, Patrick H J, LeBlanc M, Koo K P, Askins C G, Putnam M A, Friebele E J 1997 Journal of Lightwave Technology 15 1442
[2] Bhatia V, Vengsarkar A M 1996 Optics Letters 21 692
[3] Murphy K A, Gunther M F, Vengsarkar A M, Claus R O 1991 Opt. Lett. 16 273
[4] Kao T W, Taylor H F 1996 Opt. Lett. 21 615
[5] Guo W G, Yang X F, Luo S J, Li Y N, Tu C H, Lü F Y, Wang H J, Li E B, Lü C 2007 Acta Phys. Sin. 56 308 (in Chinese) [郭文刚、杨秀峰、罗绍均、李勇男、涂成厚、吕福云、王宏杰、李恩邦、吕 超 2007 56 308]
[6] Wang Z F, Hu Y M, Meng Z, Luo H, Ni M 2009 Acta Phys. Sin. 58 8352 (in Chinese) [王泽锋、胡永明、孟 洲、罗 洪、倪 明 2009 58 8352]
[7] Babchenko A, Weinberger Z, Itzkovich N, Maryles J, 2006 Measurement Science and Technology 17 1157
[8] Kumar V V R, George A, Reeves W, Knight J, Russell P, Omenetto F, Taylor A 2002 Opt. Express 10 1520
[9] Ruan Y, Foo T C, Warren-Smith S, Hoffmann P, Moore R C, Ebendorff-Heidepriem H, Monro T M 2008 Opt. Express 16 18514
[10] DebsJ E, Ebendorff-Heidepriem H, Quinton J S, Monro T M 2009 IEEE Journal of Lightwave Technology 27 576
[11] Erdogan T 1997 Journal of Lightwave Technology 15 1277
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