Simultaneous Measurement of Bend Direction and Degree of Curvature using Micromachined Grating Fibers

Kumazaki, Hironori; Hiramatsu, Munehiro; Oguri, Hisakazu; Inaba, Seiki; Hane, Kazuhiro

doi:10.1541/ieejsmas.134.41

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2018

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“…(3,4) A curvature sensor based on an FBG with an asymmetrical cross section was proposed and fabricated by anisotropic etching. (5) The application of a bending stress to this fiber is equivalent to inducing a longitudinal stress in the fiber core, which alters the grating period and effective refractive index. This method has potential for the measurement of the degree of curvature of an independent optical fiber without using other structures.…”

Section: Introductionmentioning

confidence: 99%

Dependence of the Reflection Wavelength Shift of a Resin-Embedded Grating Fiber on the Resin Material

2018

Sensors and Materials

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The dependence of the center reflection wavelength shift of a resin-embedded fiber Bragg grating (FBG) on the resin material was investigated for the use of the grating fiber as a bending deflection sensor (4 × 8 × 40 mm 3 ). The reflection center wavelength for an FBG embedded in acrylic adhesive shifted linearly by up to 3.1 nm owing to the deflection caused by a bend feeder displacement of 1.2 mm. These wavelength shifts were approximately 60 times larger than those for an etched FBG with one side of the cladding etched to within 11 μm of the core and 33 times larger than those for an FBG embedded in a modified silicon adhesive. These results depend primarily on Young's modulus of the resin material used to embed the FBG.

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Section: Introductionmentioning

confidence: 99%

Dependence of the Reflection Wavelength Shift of a Resin-Embedded Grating Fiber on the Resin Material

2018

Sensors and Materials

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show abstract

Simultaneous Measurement of Bend Direction and Degree of Curvature using Micromachined Grating Fibers

Cited by 1 publication

References 12 publications

Dependence of the Reflection Wavelength Shift of a Resin-Embedded Grating Fiber on the Resin Material

Dependence of the Reflection Wavelength Shift of a Resin-Embedded Grating Fiber on the Resin Material

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