Selectively Infiltrated PCF for Directional Bend Sensing With Large Bending Range

Author

Chen, H.F. ; Ying Wang ; Wang, D.N.

Author_Institution

Coll. of Opt. & Electron. Technol., China Jiliang Univ., Hangzhou, China

Volume

27

Issue

5

fYear

2015

fDate

March1, 1 2015

Firstpage

502

Lastpage

505

Abstract

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.

Keywords

fibre optic sensors; high-speed optical techniques; holey fibres; laser beam machining; micromachining; optical fibre couplers; optical fibre fabrication; optical fibre testing; photonic crystals; refractive index; air holes; core mode-higher order liquid rod mode coupling; directional bend sensing; directional bend sensor; femtosecond laser micromachining technique; fusion splicing; infiltrating refractive index liquid; resonant dip production; selectively infiltrated photonic crystal fiber fabrication; single-mode fiber; transmission spectrum; Fiber gratings; Optical fiber sensors; Optical fibers; Optimized production technology; Photonic crystal fibers; Temperature sensors; Optical fiber sensor; bend sensing; optical fiber sensor; selectively infiltrated photonic crystal fiber;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2382654

Filename

6990540