Selectively Infiltrated PCF for Directional Bend Sensing With Large Bending Range

A directional bend sensor based on selectively infiltrated photonic crystal fiber is demonstrated. The device is fabricated by use of femtosecond laser micromachining technique and fusion splicing of photonic crystal fiber with single-mode fiber. By infiltrating refractive index liquid into one of the air holes of the photonic crystal fiber, the core mode can be coupled into the higher order liquid rod mode, thus producing a resonant dip in the transmission spectrum of the device. Such a dip wavelength is sensitive to both the bending curvature and the direction, and has a linear response to curvature within a large range from 0 to 10.7 m-1.

[1]  Benjamin J. Eggleton,et al.  Ultra-sensitive photonic crystal fiber refractive index sensor , 2009 .

[2]  Bong-Ahn Yu,et al.  Highly sensitive strain and bending sensor based on in-line fiber Mach–Zehnder interferometer in solid core large mode area photonic crystal fiber , 2010 .

[3]  J M Baptista,et al.  All Fiber Mach–Zehnder Interferometer Based on Suspended Twin-Core Fiber , 2010, IEEE Photonics Technology Letters.

[4]  S. James,et al.  Simultaneous temperature and bend sensing with long-period fiber gratings. , 2000, Optics letters.

[5]  Yi-Ping Wang,et al.  A novel long period fiber grating sensor measuring curvature and determining bend-direction simultaneously , 2005, IEEE Sensors Journal.

[6]  Zhi Wang,et al.  Bending sensor based on intermodal interference properties of two-dimensional waveguide array fiber. , 2012, Optics letters.

[7]  Ying Wang,et al.  Embedded coupler based on selectively infiltrated photonic crystal fiber for strain measurement. , 2012, Optics letters.

[8]  Ying Wang,et al.  Femtosecond laser-assisted selective infiltration of microstructured optical fibers. , 2010, Optics express.

[9]  M. Large,et al.  Liquid-filled hollow core microstructured polymer optical fiber. , 2006, Optics express.

[10]  J. G. Burnett,et al.  Bend measurement using Bragg gratings in multicore fibre , 2000 .

[11]  C. Liao,et al.  Selectively Infiltrated Photonic Crystal Fiber With Ultrahigh Temperature Sensitivity , 2011, IEEE Photonics Technology Letters.

[12]  Ian Bennion,et al.  Bend sensors with direction recognition based on long-period gratings written in D-shaped fiber. , 2004, Applied optics.

[13]  Daru Chen,et al.  Bending analysis of a dual-core photonic crystal fiber , 2011 .

[14]  A. Martínez-Ríos,et al.  Compact optical fiber curvature sensor based on concatenating two tapers. , 2011, Optics letters.

[15]  Gang-Ding Peng,et al.  Highly Sensitive Bend Sensor Based on Bragg Grating in Eccentric Core Polymer Fiber , 2010, IEEE Photonics Technology Letters.

[16]  Xudong Fan,et al.  On the performance quantification of resonant refractive index sensors. , 2008, Optics express.

[17]  Ian Bennion,et al.  Bend sensing by measuring the resonance splitting of long-period fiber gratings , 2001 .

[18]  Hao Zhang,et al.  Two-dimensional bending vector sensing based on spatial cascaded orthogonal long period fiber. , 2012, Optics express.

[19]  Peiguang Yan,et al.  Ambient refractive index-independent bending vector sensor based on seven-core photonic crystal fiber using lateral offset splicing. , 2013, Optics express.

[20]  Christos Markos,et al.  Hybrid polymer photonic crystal fiber with integrated chalcogenide glass nanofilms , 2014, Scientific Reports.

[22]  Tao Zhu,et al.  Highly sensitive bend sensor based on Mach–Zehnder interferometer using photonic crystal fiber , 2011 .

[23]  Yuehua Wu,et al.  All-Fiber Curvature Sensor Based on Multimode Interference , 2011, IEEE Photonics Technology Letters.