Theoretical analysis and experimental study of temperature sensitivity of Long-period fiber grating

2005 ◽  
Author(s):  
Peng yong ◽  
Cheng yi
Keyword(s):  
Experimental Study ◽  
Theoretical Analysis ◽  
Temperature Sensitivity ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating

High temperature-sensitivity sensor based on long period fiber grating inscribed with femtosecond laser transversal-scanning method

2017 ◽  
Vol 15 (9) ◽  
pp. 090602 ◽  
Author(s):  
Xinran Dong Xinran Dong ◽  
Zheng Xie Zheng Xie ◽  
Yuxin Song Yuxin Song ◽  
Kai Yin Kai Yin ◽  
Dongkai Chu Dongkai Chu ◽  
...  
Keyword(s):  
High Temperature ◽  
Femtosecond Laser ◽  
Temperature Sensitivity ◽  
Fiber Grating ◽  
Scanning Method ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating ◽  
High Temperature Sensitivity

Temperature Compensation of Long Period Fiber Grating with Negative Strain Coefficient

2011 ◽  
Vol 103 ◽  
pp. 124-127
Author(s):  
Wei Wang ◽  
Bao Ju Zhang ◽  
Xiao Hui Yin
Keyword(s):  
Thermal Expansion ◽  
Temperature Sensitivity ◽  
Temperature Compensation ◽  
Substrate Material ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Strain Coefficient ◽  
Period Fiber Grating ◽  
Lower Temperature

A passive temperature-compensating package of Long Period Fiber Grating (LPFG) was designed based on its negative strain coefficient. LPFG was pasted on the substrate material, such as copper and Plexiglas, under tension. The strain induced by the thermal expansion of substrate material was used for temperature compensating .The experimental results showed that the mounted grating on copper exhibited lower temperature sensitivity (about 78pm/°C), compared with uncompensated grating(about 118pm/°C). But the transmission spectrum waveform of the mounted grating on Plexiglas changed. It was demonstrated that this package could improve the wavelength stability of LPFG when appropriated substrate material was chosen.

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