Title :
Chemical sensor for nitrate in water using long period optical fiber grating fabricated by point by point method
Author :
Akki, J.F. ; Lalasangi, A.S. ; Raikar, U.S. ; Kulkarni, V.K. ; Radhakrishnan, Pooja ; Pattanshetty, I.I.
Author_Institution :
Karnatak Univ., Dharwad, India
Abstract :
We present long period grating (LPG) fabrication and application of LPG as chemical sensor. We fabricated LPG of grating period 610μm in single mode communication grade fiber using point by point method. Here we used 12watt CO2 laser to irradiate the fiber. The behavior of resonance wavelength of LPG was studied by immersing it in nitrate solution of concentration ranging from 10ppm to 50ppm. The results showed the linear behavior of resonance wavelength of LPG that can be used to determine the concentration of nitrate in water.
Keywords :
Bragg gratings; chemical sensors; fibre optic sensors; gas lasers; laser beam effects; optical fibre fabrication; CO2 laser; LPG fabrication; chemical sensor; fiber irradiation; linear behavior; long period optical fiber grating; nitrate solution concentration; point by point method; power 12 W; resonance wavelength; single mode communication grade fiber; Fiber gratings; Fiber lasers; Optical fiber communication; Optical fiber dispersion; Optical fiber sensors; Optical fibers; Carbon dioxide laser; Chemical sensor; Long period grating; Point by point method;
Conference_Titel :
Optical Engineering (ICOE), 2012 International Conference on
Conference_Location :
Belgaum
Print_ISBN :
978-1-4673-2461-8
Electronic_ISBN :
978-1-4673-2462-5
DOI :
10.1109/ICOE.2012.6409565
