Tunable phase-shifted fiber Bragg grating based on a microchannel fabricated by a femtosecond laser

Li Zeng; Xiaoyan Sun; Zikun Chang; Youwang Hu; Ji’an Duan

doi:doi:10.3788/COL202119.030602

Chinese Optics Letters, 2021, 19 (3): 030602, Published Online: Mar. 16, 2021

Tunable phase-shifted fiber Bragg grating based on a microchannel fabricated by a femtosecond laser Download： 662次

Li Zeng Xiaoyan Sun ^*Zikun Chang Youwang Hu Ji’an Duan

Author Affiliations

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

Figures & Tables

Fig. 1. Schematic diagram of the PS-FBG inscription process.

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Fig. 2. Schematic diagram of the designed PS-FBG.

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Fig. 3. (a) FBG and trace image observed in CCD and (b) optical microscope image of the fiber end face.

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Fig. 4. Spectrum of the PS-FBG at different times during the corrosion process: (a) 14 min, (b) 17 min, (c) 21 min, and (d) 24 min.

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Fig. 5. Reflection spectra varying with the refractive index.

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Fig. 6. Linear relationship between the wavelength and refractive index of the phase shift peak (red line). Linear relationship between the intensity and refractive index of the phase shift peak (blue line).

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Fig. 7. Reflection spectra of the microchannel PS-FBG in distilled water at different temperatures.

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Fig. 8. Linear relationship between the wavelength and temperature of the three extreme points.

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Li Zeng, Xiaoyan Sun, Zikun Chang, Youwang Hu, Ji’an Duan. Tunable phase-shifted fiber Bragg grating based on a microchannel fabricated by a femtosecond laser[J]. Chinese Optics Letters, 2021, 19(3): 030602.

Tunable phase-shifted fiber Bragg grating based on a microchannel fabricated by a femtosecond laser Download： 662次

Fig. 1. Schematic diagram of the PS-FBG inscription process.

Fig. 2. Schematic diagram of the designed PS-FBG.

Fig. 3. (a) FBG and trace image observed in CCD and (b) optical microscope image of the fiber end face.

Fig. 4. Spectrum of the PS-FBG at different times during the corrosion process: (a) 14 min, (b) 17 min, (c) 21 min, and (d) 24 min.

Fig. 5. Reflection spectra varying with the refractive index.

Fig. 6. Linear relationship between the wavelength and refractive index of the phase shift peak (red line). Linear relationship between the intensity and refractive index of the phase shift peak (blue line).

Fig. 7. Reflection spectra of the microchannel PS-FBG in distilled water at different temperatures.

Fig. 8. Linear relationship between the wavelength and temperature of the three extreme points.

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Tunable phase-shifted fiber Bragg grating based on a microchannel fabricated by a femtosecond laser Download： 662次

Fig. 1. Schematic diagram of the PS-FBG inscription process.

Fig. 2. Schematic diagram of the designed PS-FBG.

Fig. 3. (a) FBG and trace image observed in CCD and (b) optical microscope image of the fiber end face.

Fig. 4. Spectrum of the PS-FBG at different times during the corrosion process: (a) 14 min, (b) 17 min, (c) 21 min, and (d) 24 min.

Fig. 5. Reflection spectra varying with the refractive index.

Fig. 6. Linear relationship between the wavelength and refractive index of the phase shift peak (red line). Linear relationship between the intensity and refractive index of the phase shift peak (blue line).

Fig. 7. Reflection spectra of the microchannel PS-FBG in distilled water at different temperatures.

Fig. 8. Linear relationship between the wavelength and temperature of the three extreme points.

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