Core Regulation of Long Period Grating Based on Ring-Core Hollow Fiber and the Application of Temperature Sensing

Autor: Bin Dai, Xiang Shen, Jinyan Li, Nengli Dai, Luyun Yang, Xiongwei Hu, Yibo Wang, Yehui Liu, Jinggang Peng, Haiqing Li
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: IEEE Photonics Journal, Vol 9, Iss 5, Pp 1-6 (2017)
Druh dokumentu: article
ISSN: 1943-0655
DOI: 10.1109/JPHOT.2017.2759140
Popis: We propose a novel long-period grating (LPG) based on a ring-core hollow fiber (RCHF) filled with functional liquid as a tunable material. The RCHF structure is simple. The effective refractive index tuning characteristics of the liquid-filled RCHF-LPG are investigated. The RCHF-LPG functions as a tunable device filling with a functional liquid. The temperature sensitivities of three RCHF-LPG samples filled with dimethylacetamide (DMA) or DMA–glycerin mixtures are measured. The results show that the sample with high-RI liquid has higher sensitivity to temperature variation. The maximum linear sensitivity of the temperature can reach −618 pm/°C.
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