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Temperature sensitivity enhancement of platinum-nanoparticle-coated long period fiber gratings fabricated by femtosecond laser
被引:12
作者:
Dong, Xinran
[1
]
Xie, Zheng
[1
]
Zhou, Chu
[1
]
Yin, Kai
[1
]
Luo, Zhi
[1
]
Duan, Ji'an
[1
]
机构:
[1] Cent S Univ, Coll Mech & Elect Engn, State Key Lab High Performance Complex Mfg, 932 South Lushan St, Changsha 410083, Hunan, Peoples R China
基金:
中国国家自然科学基金;
中国博士后科学基金;
关键词:
SIMULTANEOUS REFRACTIVE-INDEX;
SENSOR;
INTERFEROMETER;
LPFG;
D O I:
10.1364/AO.56.006549
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
The temperature sensing performance of long period fiber gratings (LPFGs) written by femtosecond laser pulses coated with platinum nanoparticles (PtNPs) is proposed and demonstrated. It is found that the PtNPs increase the wavelength sensitivity of the LPFG significantly compared with the bare LPFG. The temperature sensitivities of the bare LPFG for three dips, corresponding to 1438, 1485, and 1585 nm, are 74.04, 77.23, and 86.26 pm/degrees C, respectively, when the temperature changes from 10 degrees C to 500 degrees C, whereas the corresponding sensitivities of PtNP coated LPFGs are up to 90.58, 93.51, and 103.43 pm/degrees C, respectively. Moreover, the PtNP coated LPFG has shown better wavelength repeatability. A small wavelength hysteresis of similar to 0.5 nm is observed when the temperature is less than 300 degrees C. (C) 2017 Optical Society of America
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页码:6549 / 6553
页数:5
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