Long period gratings on random hole optical fibers and microstructured disordered fibers

LPG structures were fabricated on Microstructured Disordered Fibers with attenuation peaks from -16.9 to -24.5 dB in the transmission range from I 160nm and 1630nm, with an average of -20.8 dB and a standard deviation of 3.8dB. These structures were compared to LPGs fabricated previously on Random Hole Optical Fibers with the largest attenuations peaks for all modes located between 1160nm and 1630nm in the range from -9.5dB to -22.3dB with an average of -11.8dB, sigma=5.2dB. Based on fabrication of long period gratings on these two different types of holey optical fibers, we have proven the feasibility of this process which may extend the possible field of application of those low cost fibers in fiber optic sensors and this has also confirmed the flexibility of the arc-discharge fabrication method for long period gratings.