Long-period gratings in photonic crystal fibers for sensing of external refractive index change and macro-bending

Zonghu He; Yinian Zhu; Ryan T. Bise; Henry Du

doi:10.1117/12.688355

18 October 2006 Long-period gratings in photonic crystal fibers for sensing of external refractive index change and macro-bending

Zonghu He, Yinian Zhu, Ryan T. Bise, Henry Du

Author Affiliations +

Proceedings Volume 6369, Photonic Crystals and Photonic Crystal Fibers for Sensing Applications II; 636908 (2006) https://doi.org/10.1117/12.688355
Event: Optics East 2006, 2006, Boston, Massachusetts, United States

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.

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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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