Long-period grating inscription on polymer functionalized optical microfibers and its applications in optical sensing

Z. Y. Xu; Y. H. Li; L. J. Wang

doi:doi:10.1364/prj.4.000045

Photonics Research, 2016, 4 (2): 02000045, Published Online: Sep. 28, 2016

Long-period grating inscription on polymer functionalized optical microfibers and its applications in optical sensing Download： 869次

Z. Y. Xu ^1,2Y. H. Li ^1,3,*L. J. Wang ^1,3

Author Affiliations

¹ Joint Institute for Measurement Science, Tsinghua University, Beijing 100084, China

² Shanghai Institute of Laser Plasma, 1129 Chenjiashan Road, Jiading, Shanghai 201800, China

³ State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China

Figures & Tables

Fig. 1. Schematic for the inscription of MLPGs via point-by-point ultraviolet exposure. A supercontinuum source (SCS) is used for illumination and the transmission spectrum is displayed on an optical spectrum analyzer (OSA) in real time.

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Fig. 2. (a) Transmission spectrum of a 25-period MLPG. The grating pitch is 80 μm and the diameter of the optical microfiber is 5.4 μm. (b) The calculated grating pitches for different resonant dip wavelengths in optical microfiber with a diameter of 5.4 μm.

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Fig. 3. (a) Spectral responses of the MLPG to strain. The applied strain ranged from 0 to 7533 μϵ. (b) The measured resonant dip wavelengths (square scatters) and the linear fitting result (red line). The corresponding applied axial force is shown as the top axis.

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Fig. 4. Spectral responses of (a) unsealed and (b) sealed MLPGs to temperature change. (c) The measured resonant wavelengths of sealed (square scatters) and unsealed (circle scatters) MLPGs at different temperatures. The linear fitting results are shown as red lines.

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Z. Y. Xu, Y. H. Li, L. J. Wang. Long-period grating inscription on polymer functionalized optical microfibers and its applications in optical sensing[J]. Photonics Research, 2016, 4(2): 02000045.

Long-period grating inscription on polymer functionalized optical microfibers and its applications in optical sensing Download： 869次

Fig. 1. Schematic for the inscription of MLPGs via point-by-point ultraviolet exposure. A supercontinuum source (SCS) is used for illumination and the transmission spectrum is displayed on an optical spectrum analyzer (OSA) in real time.

Fig. 2. (a) Transmission spectrum of a 25-period MLPG. The grating pitch is 80 μm and the diameter of the optical microfiber is 5.4 μm. (b) The calculated grating pitches for different resonant dip wavelengths in optical microfiber with a diameter of 5.4 μm.

Fig. 3. (a) Spectral responses of the MLPG to strain. The applied strain ranged from 0 to 7533 μϵ. (b) The measured resonant dip wavelengths (square scatters) and the linear fitting result (red line). The corresponding applied axial force is shown as the top axis.

Fig. 4. Spectral responses of (a) unsealed and (b) sealed MLPGs to temperature change. (c) The measured resonant wavelengths of sealed (square scatters) and unsealed (circle scatters) MLPGs at different temperatures. The linear fitting results are shown as red lines.

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Long-period grating inscription on polymer functionalized optical microfibers and its applications in optical sensing Download： 869次

Fig. 1. Schematic for the inscription of MLPGs via point-by-point ultraviolet exposure. A supercontinuum source (SCS) is used for illumination and the transmission spectrum is displayed on an optical spectrum analyzer (OSA) in real time.

Fig. 2. (a) Transmission spectrum of a 25-period MLPG. The grating pitch is 80 μm and the diameter of the optical microfiber is 5.4 μm. (b) The calculated grating pitches for different resonant dip wavelengths in optical microfiber with a diameter of 5.4 μm.

Fig. 3. (a) Spectral responses of the MLPG to strain. The applied strain ranged from 0 to 7533 μϵ. (b) The measured resonant dip wavelengths (square scatters) and the linear fitting result (red line). The corresponding applied axial force is shown as the top axis.

Fig. 4. Spectral responses of (a) unsealed and (b) sealed MLPGs to temperature change. (c) The measured resonant wavelengths of sealed (square scatters) and unsealed (circle scatters) MLPGs at different temperatures. The linear fitting results are shown as red lines.

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