Long period gratings were written step-by-step in microstructured poly(methyl methacrylate) (PMMA) fibre using a continuous wave HeCd laser at 325nm irradiating the fibre with a power of 1mW. The grating had a length of 2 cm and a period of 1mm. A series of cladding mode coupling resonances were observed throughout the spectral region studied of 600 to 1100nm. The resonance wavelengths were shown to be sensitive to both surrounding refractive index and the water content of the polymer fibre.
|Title of host publication||Photonic Crystal Fibers III|
|Place of Publication||Bellingham, WA (US)|
|Number of pages||8|
|Publication status||Published - 14 May 2009|
|Event||Photonic Crystal Fibers III - Prague, Czech Republic|
Duration: 22 Apr 2009 → 23 Apr 2009
|Conference||Photonic Crystal Fibers III|
|Period||22/04/09 → 23/04/09|
Bibliographical noteDavid Sáez-Rodríguez; Jose L. Cruz Munoz; Ian Johnson; David J. Webb; Maryanne C. J. Large and Alexander Argyros; "Long period fibre gratings photoinscribed in a microstructured polymer optical fibre by UV radiation", Proc. SPIE 7357, Photonic Crystal Fibers III, 73570L (May 19, 2009).
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- long period grating
- optical fibre sensor
- refractive index