Small Period Long Period Grating with Enhanced Sensitivity in Low Refractive Index Region

Fangcheng Shen; Kaiming Zhou; Kaiming Zhou; Lin Zhang; Xuewen Shu

2017 Conference on Lasers and Electro-Optics Pacific Rim
(Optica Publishing Group, 2017),
paper s1514

Small Period Long Period Grating with Enhanced Sensitivity in Low Refractive Index Region

Fangcheng Shen, Kaiming Zhou, Lin Zhang, and Xuewen Shu

Conference on Lasers and Electro-Optics/Pacific Rim 2017

Singapore Singapore
31 July–4 August 2017
ISBN: 978-1-5090-6290-4

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Poster Session IV (PSIV)

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F. Shen, K. Zhou, L. Zhang, and X. Shu, "Small Period Long Period Grating with Enhanced Sensitivity in Low Refractive Index Region," in 2017 Conference on Lasers and Electro-Optics Pacific Rim, (Optica Publishing Group, 2017), paper s1514.

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Abstract

Long period grating with a grating period of 15 μm is fabricated with a femtosecond laser. Such a small period grating enables coupling of fundamental core mode with high order cladding modes that have effective refractive index close to water, and exhibits an enhanced sensitivity in low refractive index region.

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