Transmission Mode Measurement Technique of Long Period Grating Based on A Single End Face

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	Transmission Mode Measurement Technique of Long Period Grating Based on A Single End Face
	Li, Q.-S.; D. Xiang; C. Chen; J.-G. Shi; X.-T. Ji; X.-T. Li and W.-F. Dong
刊名	Faguang Xuebao/Chinese Journal of Luminescence
	2017
卷号	38 期号:8
英文摘要	In order to realize remote monitoring or measuring in the way of transmission mode for long period fiber grating (LPFG), the measurement device system based on a single end face coated with reflective film was designed. The sensing principle of LPFG with a single end face coated with reflective film was explained and analysed. The responses of the single end face system and the direct transmission mode system to environmental media with different refractive index were investigated by experiments. Firstly, 22 single-mode fiber coupler was used to connect spectrometer, light source and LPFG, respectively. Then, the reflective silver film was fabricated in the other end face of the optical fiber including LPFG. Finally, by measuring a series of environmental media with different refractive indices, the response spectra of LPFG were compared in the two cases of the direct transmission mode and the silver film coated single end face mode. When the wavelength demodulation is adopted, the resonance wavelength corresponding to the same medium is nearly same in the above two cases. When the power/peak demodulation is adopted, the optical loss gradually changed from -6.05 dB to -9.22 dB for the direct transmission mode, but from -8.03 dB to -11.33 dB for the silver film coated single end face mode with the increase of glycerin concentration in solutions. Compared with the direct transmission mode, the relative optical loss of LPFG based on the single end face mode increases significantly. The LPFG in the single end face mode has more sharp resonance peaks than that in the direct transmission mode, which makes the resonance wavelengths and the optical loss value being recognized more easily. The measurement device system based on the single end face coated with silver film not only retains the transmission sensing mode of LPFG, but also makes the operation of measuring environment medium more flexible and convenient. In particular, it has a unique advantage for the measurement of refractive index in long distance, deep liquid, and severe environment. 2017, Science Press. All right reserved.
语种	中文
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/59017]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Li, Q.-S.,D. Xiang,C. Chen,et al. Transmission Mode Measurement Technique of Long Period Grating Based on A Single End Face[J]. Faguang Xuebao/Chinese Journal of Luminescence,2017,38(8).
APA	Li, Q.-S.,D. Xiang,C. Chen,J.-G. Shi,X.-T. Ji,&X.-T. Li and W.-F. Dong.(2017).Transmission Mode Measurement Technique of Long Period Grating Based on A Single End Face.Faguang Xuebao/Chinese Journal of Luminescence,38(8).
MLA	Li, Q.-S.,et al."Transmission Mode Measurement Technique of Long Period Grating Based on A Single End Face".Faguang Xuebao/Chinese Journal of Luminescence 38.8(2017).