Novel θ-shaped sapphire fiber Bragg grating demonstrates high resonance intensity in single mode, indicating strong potential for temperature sensing.
We propose and demonstrate a novel θ-shaped sapphire fiber Bragg grating fabricated with a femtosecond laser. Such a grating can operate in single mode and has high Bragg resonance intensity and narrow Bragg bandwidth.
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He et al. (2025) studied this question.
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