Abstract
This paper describes the manufacture of long period gratings (LPG) for liquid concentration sensing. The LPGs are made in perfluorinated polymer optical fiber point to point using a pulsed laser at 355 nm. A LPG of period 75 µm and a wavelength of resonance of 910 nm is used for measurement of water with different concentrations of sugar.
© 2013 Optical Society of America
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