scholarly journals Design and Simulation of Temperature Sensor based on Long Period Grating in Liquid Filled Photonic Crystal Fiber

2018 ◽  
Vol 7 (3) ◽  
pp. 11-16
Author(s):  
R. Boufenar ◽  
M. Bouamar ◽  
A. Hocini
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Resonant Wavelength ◽  
Wavelength Shift ◽  
Long Period Grating ◽  
Crystal Fiber ◽  
Long Period ◽  
Vector Finite Element

In this paper, a high sensitivity temperature sensor based on photonic crystal fiber long period grating (PCF-LPG) filled with ethanol is proposed and simulated by full vector finite element method. The relationship between the resonant wavelength shift, and the temperature was analyzed. The results show that the resonant wavelength of the ethanol filled photonic crystal fiber long period grating is proportional linearly with temperature and the highest  sensitivity of  was achieved, which is 90 times higher than that of conventional LPG temperature sensors.

Dual Resonance Temperature Sensor of a Long-Period Grating Written in a Liquid-Filled Photonic Crystal Fiber

2018 ◽  
Vol 24 (1) ◽  
pp. 84-92
Author(s):  
王晴 WANG Qing ◽  
丁毅 DING Yi ◽  
谭策 TAN Ce ◽  
李宏伟 LI Hong-wei ◽  
王猛 WANG Meng ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Temperature Sensor ◽  
Long Period Grating ◽  
Crystal Fiber ◽  
Long Period ◽  
Dual Resonance

Sensing Characteristics of Long-Period Grating Inscribed in Grapefruit Photonic Crystal Fiber by Femtosecond Laser

2014 ◽  
Vol 513-517 ◽  
pp. 4231-4234
Author(s):  
Yuan Wei ◽  
Yu Jie Du
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Femtosecond Laser ◽  
Photonic Crystal Fiber ◽  
Resonant Wavelength ◽  
Long Period Grating ◽  
Crystal Fiber ◽  
Long Period ◽  
Surrounding Refractive Index ◽  
Novel Method

A novel method for fabricating long period grating in grapefruit photonic crystal fiber (GPCF) is proposed and demonstrated. An 800nm femtosecond laser is adopted to scan a section of GPCF periodically point-by-point, resulting in effective refractive index periodic demodulation. High resonance of ~17dB is obtained with a grating length of 30 mm. The temperature sensitivity of resonant wavelength 0.03 nm/°C is obtained from 20°C to 120 °C. In addition, the relationship between resonant wavelength and surrounding refractive index (SRI), when LPFG immersed in refractive index of solution of different index, is also researched.

Sign in / Sign up

Export Citation Format

Share Document