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Helical Long-period Grating Inscription in Graded-index Few-mode Fiber for Temperature Sensing

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We experimentally demonstrate the fabrication of helical long-period grating (HLPG) in graded-index few-mode fiber by CO2 laser. The fabricated HLPG is found to be sensitive to temperature with a high sensitivity up to 244 pm/℃.

© 2018 The Author(s)

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