Sensing Characteristics of Long-Period Grating Inscribed in Grapefruit Photonic Crystal Fiber by Femtosecond Laser
2014 ◽
Vol 513-517
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pp. 4231-4234
Keyword(s):
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.
2015 ◽
Vol 13
(7)
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pp. 070501-70503
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2016 ◽
Vol 45
(2)
◽
pp. 181-189
◽
2007 ◽
Keyword(s):
2008 ◽
Vol 20
(20)
◽
pp. 1688-1690
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