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

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 t...

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Veröffentlicht in:	IEEE photonics journal 2017-10, Vol.9 (5), p.1-6
Hauptverfasser:	Dai, Bin, Shen, Xiang, Li, Jinyan, Dai, Nengli, Yang, Luyun, Hu, Xiongwei, Wang, Yibo, Liu, Yehui, Peng, Jinggang, Li, Haiqing
Format:	Artikel
Sprache:	eng
Schlagworte:	Fiber gratings Liquids Magnetic liquids Optical fiber sensors Optical fibers sensors Temperature measurement Temperature sensors
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Beschreibung
Zusammenfassung:	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.
ISSN:	1943-0655 1943-0647
DOI:	10.1109/JPHOT.2017.2759140