Reflection Spectral Characteristics of Bragg Gratings Fabricated via Femtosecond Laser Phase Mask Technique

Xinran Dong; Zian Wang; Li Zeng; Xiaoyan Sun

doi:10.3788/CJL221198

Journals >Chinese Journal of Lasers >Volume 50 >Issue 19 >Page 1906001 > Article

Chinese Journal of Lasers
Vol. 50, Issue 19, 1906001 (2023)

Reflection Spectral Characteristics of Bragg Gratings Fabricated via Femtosecond Laser Phase Mask Technique

Xinran Dong¹, Zian Wang¹, Li Zeng^2、3, and Xiaoyan Sun^2、3、*

Author Affiliations

¹College of Mechanical and Electrical Engineering, Central South University of Forestry and Technology, Changsha 410018, Hunan , China

²State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, Hunan , China

³State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, Hunan , China

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DOI: 10.3788/CJL221198 Cite this Article Set citation alerts

Xinran Dong, Zian Wang, Li Zeng, Xiaoyan Sun. Reflection Spectral Characteristics of Bragg Gratings Fabricated via Femtosecond Laser Phase Mask Technique[J]. Chinese Journal of Lasers, 2023, 50(19): 1906001 Copy Citation Text

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Fig. 1. Schematic of FBG fabrication based on femtosecond laser phase mask technologue

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Influence of exposure time on FBG reflectance spectrum. (a) FBG reflectance spectra under different exposure time; (b) wavelength, (c) reflectivity, and (d) bandwidth versus exposure time

Fig. 2. Influence of exposure time on FBG reflectance spectrum. (a) FBG reflectance spectra under different exposure time; (b) wavelength, (c) reflectivity, and (d) bandwidth versus exposure time

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Fig. 3. Influence of laser energy on FBG reflectance spectrum. (a) Wavelength, (b) reflectivity, and (c) bandwidth versus exposure time; (d) relationship between applied laser energy and required exposure time to achieve maximal reflectivity

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Fig. 4. Reflection spectra of FBGs under different process conditions