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首页> 外文期刊>Sensors Journal, IEEE >Highly Sensitive Optical Refractometer Based on Edge-Written Ultra-Long-Period Fiber Grating Formed by Periodic Grooves
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Highly Sensitive Optical Refractometer Based on Edge-Written Ultra-Long-Period Fiber Grating Formed by Periodic Grooves

机译：基于周期性凹槽形成的边缘写入超长周期光纤光栅的高灵敏度折光仪

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摘要

An ultra-long-period fiber grating with periodic groove structure (G-ULPFG) fabricated by using an edge-written method with high-frequency CO$_{2}$ laser pulses is proposed in this paper. The experimental results show that the different resonant peaks of the G-ULPFG have different temperature and refractive index sensitivities and, in particular, the refractive index sensitivity is much larger than that of conventional ULPFG due to the edge-groove structure. Such a kind of G-ULPFGs could be used as a highly sensitive optical refractometer with temperature self-compensation.
机译：提出了一种利用高频CO $ _ {2} $激光脉冲的边写法制造的具有周期性沟槽结构的超长周期光纤光栅（G-ULPFG）。实验结果表明，G-ULPFG的不同共振峰具有不同的温度和折射率灵敏度，特别是由于边缘凹槽结构，其折射率灵敏度比常规ULPFG大得多。这种G-ULPFG可以用作具有温度自补偿功能的高灵敏度光学折光仪。

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