Paper
18 October 2006 Long-period gratings in photonic crystal fibers for sensing of external refractive index change and macro-bending
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Abstract
Long-period gratings (LPGs) have been fabricated in endlessly single mode photonic crystal fibers (ESM-PCFs) utilizing focused CO2 laser irradiation and residual stress relaxation technique. The responses of the ESM-PCF-LPGs to external refractive index and applied bending curvature have been investigated. As compared with the conventional fiber-based LPGs inscribed under the same condition, the ESM-PCF-LPGs exhibit higher sensitivity to external refractive index change and macro-bending, making them attractive candidates for chemical and biological sensing applications.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zonghu He, Yinian Zhu, Ryan T. Bise, and Henry Du "Long-period gratings in photonic crystal fibers for sensing of external refractive index change and macro-bending", Proc. SPIE 6369, Photonic Crystals and Photonic Crystal Fibers for Sensing Applications II, 636908 (18 October 2006); https://doi.org/10.1117/12.688355
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KEYWORDS
Refractive index

Cladding

Gas lasers

Photonic crystal fibers

Carbon monoxide

Hydrogen

Signal attenuation

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