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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  • Optical Sensing, Measurements, and Metrology
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Φ=2πλ·L0(neffcoreneffclad),(1)

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ΔλλδΔneffΔneff,(2)

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δΔneff=(gcoreneffcoregcladneffclad)τ,(3)

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Δλ=λΔneff(gcoreneffcoregcladneffclad)τ=KλΔneffτ=Tτ.(4)

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(ΔτΔT)C=(0.1140.0570.0690.051)1(ΔλAΔλB),(5)

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(ΔτΔT)C-C=(0.0870.0570.0480.051)1(ΔλAΔλB).(6)

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