Enhanced transverse load sensitivity by using a highly birefringent photonic crystal fiber with larger air holes on one axis.

We report on a transverse load sensor with enhanced sensitivity through the use of a birefringent interferometer based on a highly birefringent photonic crystal fiber (HB-PCF). The transverse load sensitivity can be enhanced by using a fabricated HB-PCF having larger air holes on its fast axis. The transverse load sensitivity was measured to be high: approximately 2.17 nm/(N/cm). The temperature-induced undesirable effects can be ignored because transmission outputs of our HB-PCF were stable with the change of the temperature. The sensing probe can be compact because of its high birefringence with the order of 10(-3) and no bending loss.

[1]  H. Tam,et al.  Pressure sensor realized with polarization-maintaining photonic crystal fiber-based Sagnac interferometer. , 2008, Applied optics.

[2]  John Canning,et al.  Sensitivity enhancement of fiber Bragg gratings to transverse stress by using microstructural fibers. , 2006, Optics letters.

[3]  Orlando Frazão,et al.  Bragg gratings in normal and reduced diameter high birefringence fibre optics , 2006 .

[4]  Wim De Waele,et al.  Transversal Load Sensing With Fiber Bragg Gratings in Microstructured Optical Fibers , 2009, IEEE Photonics Technology Letters.

[5]  Hwa-Yaw Tam,et al.  Temperature-insensitive strain sensor with polarization-maintaining photonic crystal fiber based Sagnac interferometer , 2007 .

[6]  J M Baptista,et al.  Simultaneous measurement of multiparameters using a Sagnac interferometer with polarization maintaining side-hole fiber. , 2008, Applied optics.

[7]  Tadeusz Martynkien,et al.  Modeling and measurement of temperature sensitivity in birefringent photonic crystal holey fibers. , 2005, Applied optics.

[8]  S. Vohra,et al.  Transverse load sensing by use of pi-phase-shifted fiber Bragg gratings. , 1999, Optics letters.

[9]  D. M. Atkin,et al.  All-silica single-mode optical fiber with photonic crystal cladding. , 1996, Optics letters.

[10]  Byeong Ha Lee,et al.  Fibre-optic sensing applications of a pair of long-period fibre gratings , 2001 .

[11]  김문기,et al.  Temperature and strain discrimination based on a temperature-insensitive birefringent interferometer incorporating an erbium-doped fiber , 2009 .

[12]  Ian Bennion,et al.  Transverse load and orientation measurement with multicore fiber Bragg gratings. , 2005, Applied optics.

[13]  M.S. Demokan,et al.  Temperature-insensitive Interferometer using a highly birefringent photonic Crystal fiber loop mirror , 2004, IEEE Photonics Technology Letters.

[14]  Yunjiang Rao,et al.  Asymmetric transverse-load characteristics and polarization dependence of long-period fiber gratings written by a focused CO(2) laser. , 2007, Applied optics.

[15]  Young-Geun Han,et al.  The temperature sensitivity of Sagnac loop interferometer based on polarization maintaining side-hole fiber , 2007, 2007 Conference on Lasers and Electro-Optics - Pacific Rim.

[16]  Hugo Thienpont,et al.  Temperature and pressure sensitivities of the highly birefringent photonic crystal fiber with core asymmetry , 2005 .