The study of temperature measurement based on the transmission of fixed wavelengths for helical long-period grating

IF 0.7 4区 物理与天体物理 Q4 OPTICS Optica Applicata Pub Date : 2022-01-01 DOI:10.37190/oa220110
Yunfeng Bai, Zelong He, Suihu Dang
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Abstract

This research involves a fixed wavelength and dual-wavelength ratio temperature measurement for helical long-period grating. There are two resonant dips near 1475 and 1520 nm, with the pitch length 782 μm. The temperature sensitivity of resonance wavelengths is about 0.06 nm/°C. Both theoretical simulation and experiment results show that the transmission of a fixed wavelength linearly changes with the temperature. It has a high application value for measuring temperature. Besides, the dual-wavelength ratio is studied to eliminate the influence of light source. The temperature sensitivity of transmission intensity ratio of I1469.6nm/I0 and I1469.6nm/I1526.5nm are about 1.0076/°C and 0.0155/°C, respectively, so the dual-wavelength ratio is more practical. And the 0.0155 times intensity change could be much more easily measured than the 0.06 nm wavelength change for each degree Celsius. So the dual-wavelength ratio of the helical long-period gratings is very suitable for temperature sensors.
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基于固定波长透射的螺旋长周期光栅测温研究
本文研究了螺旋长周期光栅的固定波长和双波长比温度测量。在1475 nm和1520 nm附近有两个共振凹陷,基音长度为782 μm。共振波长的温度灵敏度约为0.06 nm/℃。理论模拟和实验结果表明,固定波长的透射率随温度的变化呈线性变化。它对温度测量有很高的应用价值。此外,研究了双波长比,消除了光源的影响。I1469.6nm/I0和I1469.6nm/I1526.5nm透射强度比的温度灵敏度分别约为1.0076/°C和0.0155/°C,因此双波长比更实用。而0.0155倍的强度变化比每摄氏度0.06 nm的波长变化更容易测量。因此,螺旋长周期光栅的双波长比非常适合用于温度传感器。
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来源期刊
Optica Applicata
Optica Applicata 物理-光学
CiteScore
1.00
自引率
16.70%
发文量
21
审稿时长
4 months
期刊介绍: Acoustooptics, atmospheric and ocean optics, atomic and molecular optics, coherence and statistical optics, biooptics, colorimetry, diffraction and gratings, ellipsometry and polarimetry, fiber optics and optical communication, Fourier optics, holography, integrated optics, lasers and their applications, light detectors, light and electron beams, light sources, liquid crystals, medical optics, metamaterials, microoptics, nonlinear optics, optical and electron microscopy, optical computing, optical design and fabrication, optical imaging, optical instrumentation, optical materials, optical measurements, optical modulation, optical properties of solids and thin films, optical sensing, optical systems and their elements, optical trapping, optometry, photoelasticity, photonic crystals, photonic crystal fibers, photonic devices, physical optics, quantum optics, slow and fast light, spectroscopy, storage and processing of optical information, ultrafast optics.
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