Main > Chinese Optics Letters >  Volume 18 >  Issue 2 >  Page 021203 > Article
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  • Received: Sep. 16, 2019

    Accepted: Nov. 7, 2019

    Posted: Jan. 6, 2020

    Published Online: Jan. 7, 2020

    The Author Email: Tao Geng (gengtao_hit_oe@126.com)

    DOI: 10.3788/COL202018.021203

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    Cuiting Sun, Ran Wang, Xiren Jin, Zemin Wang, Weiliang Liu, Shuo Zhang, Yiwei Ma, Jingyu Lin, Yue Li, Tao Geng, Weimin Sun, Zhongquan Qu, Libo Yuan. A new phase-shifted long-period fiber grating for simultaneous measurement of torsion and temperature[J]. Chinese Optics Letters, 2020, 18(2): 021203

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Experimental setup for fabricating the pre-twisted structure.

Fig. 1. Experimental setup for fabricating the pre-twisted structure.

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Transmission spectra of the pre-twisted structure, LPFG, and PS-LPFG.

Fig. 2. Transmission spectra of the pre-twisted structure, LPFG, and PS-LPFG.

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Structure diagram of the PS-LPFG.

Fig. 3. Structure diagram of the PS-LPFG.

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Experimental setup for torsion and temperature measurement.

Fig. 4. Experimental setup for torsion and temperature measurement.

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Transmission spectra of the PS-LPFG under different torsion rates.

Fig. 5. Transmission spectra of the PS-LPFG under different torsion rates.

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Wavelength of the PS-LPFG versus torsion rate.

Fig. 6. Wavelength of the PS-LPFG versus torsion rate.

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Transmission spectra of the PS-LPFG under different temperatures.

Fig. 7. Transmission spectra of the PS-LPFG under different temperatures.

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Resonance wavelength of the PS-LPFG responding to temperature.

Fig. 8. Resonance wavelength of the PS-LPFG responding to temperature.

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Simultaneous measurement of torsion and temperature results. (a) Torsion sensitivities of the PS-LPFG under different temperatures. (b) Temperature sensitivities of the PS-LPFG under different torsion rates.

Fig. 9. Simultaneous measurement of torsion and temperature results. (a) Torsion sensitivities of the PS-LPFG under different temperatures. (b) Temperature sensitivities of the PS-LPFG under different torsion rates.

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