Long period grating inscribed by femtosecond laser for refractive index measurements in aqueous environments

2012 ◽  
Author(s):  
Luis Brito Melo ◽  
Farid Ahmed ◽  
Martin Jun ◽  
Peter Wild
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Long Period Grating ◽  
Long Period ◽  
Aqueous Environments

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.

Study and investigation of long period grating as refractive index sensor

Optik ◽  
2014 ◽  
Vol 125 (7) ◽  
pp. 1860-1863 ◽  
Author(s):  
Amit Singh ◽  
Shashi B. Rana ◽  
Maninder Singh ◽  
Anish Sharma
Keyword(s):  
Refractive Index ◽  
Refractive Index Sensor ◽  
Long Period Grating ◽  
Long Period

Measurements of refractive index sensitivity using long-period grating refractometer

2004 ◽  
Vol 229 (1-6) ◽  
pp. 65-69 ◽  
Author(s):  
Joo Hin Chong ◽  
Ping Shum ◽  
H Haryono ◽  
A Yohana ◽  
M.K Rao ◽  
...  
Keyword(s):  
Refractive Index ◽  
Long Period Grating ◽  
Refractive Index Sensitivity ◽  
Long Period ◽  
Index Sensitivity

Long period grating-based refractive index sensor for chloride concentration measurement

2008 ◽  
Author(s):  
C. Chung Chun Lam ◽  
M. Rajesh ◽  
T. Sun ◽  
K. T. V. Grattan ◽  
S. K. T. Grattan ◽  
...  
Keyword(s):  
Refractive Index ◽  
Chloride Concentration ◽  
Concentration Measurement ◽  
Refractive Index Sensor ◽  
Long Period Grating ◽  
Long Period

scholarly journals Compact eccentric long period grating with improved sensitivity in low refractive index region

2017 ◽  
Vol 25 (14) ◽  
pp. 15729 ◽  
Author(s):  
Fangcheng Shen ◽  
Kaiming Zhou ◽  
Neil Gordon ◽  
Lin Zhang ◽  
Xuewen Shu
Keyword(s):  
Refractive Index ◽  
Long Period Grating ◽  
Long Period ◽  
Low Refractive Index

Long-period grating refractive index sensor with a modified cladding structure for large operational range and high sensitivity

2006 ◽  
Vol 45 (24) ◽  
pp. 6142 ◽  
Author(s):  
Jian Yang ◽  
Li Yang ◽  
Chang-Qing Xu ◽  
Chenglin Xu ◽  
Weiping Huang ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Sensitivity ◽  
Refractive Index Sensor ◽  
Long Period Grating ◽  
Long Period ◽  
Operational Range
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