Long period gratings written in large-mode area photonic crystal fiber
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- Nodop, D., Linke, S., Jansen, F. et al. Appl. Phys. B (2008) 92: 509. doi:10.1007/s00340-008-3112-5
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We report for the first time, to the best of our knowledge, on the fabrication and characterization of CO2-laser written long-period gratings in a large-mode area photonic crystal fiber with a core diameter of 25 μm. The gratings have low insertion losses (<1 dB) and high attenuation (>10 dB) at the resonant wavelengths, making them particularly interesting for high power applications.