Title :
Water Diffusion Into UV Inscripted Long Period Grating in Microstructured Polymer Fiber
Author :
Sáez-Rodríguez, D. ; Cruz, J.L. ; Johnson, I. ; Webb, D.J. ; Large, M.C.J. ; Argyros, A.
Author_Institution :
Dipt. de Fis. Aplic. y Electromagnetismo, Univ. de Valencia, Valencia, Spain
fDate :
7/1/2010 12:00:00 AM
Abstract :
A long period grating was photoinscribed step-by-step in microstructured poly(methyl methacrylate) fiber for the first time using a continuous wave HeCd laser at 325 nm, irradiating the fiber with a power of 1 mW. The grating had a length of 2 cm and a period of 1 mm. A series of cladding mode coupling resonances were observed throughout the spectral region studied of 600 to 1100 nm. The resonance wavelengths were shown to be sensitive to the diffusion of water into the fiber.
Keywords :
diffraction gratings; diffusion; holey fibres; laser materials processing; optical fibre cladding; optical fibre fabrication; optical polymers; polymer fibres; water; UV inscripted long period grating; cladding mode coupling resonance; continuous wave laser irradiation; microstructured poly(methyl methacrylate) fiber; power 1 mW; size 2 cm; water diffusion; wavelength 325 nm; wavelength 600 nm to 1100 nm; Capacitive sensors; Fiber gratings; Optical fiber sensors; Optical fibers; Optical polymers; Photonic crystal fibers; Refractive index; Resonance; Silicon compounds; Water; Humidity; long period grating; microstructured polymer optical fiber (mPOF); optical fiber sensor; photonic crystal fiber (PCF);
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2010.2042952
