Abstract

In this paper we report the fabrication of 3-point only Long Period Gratings (LPG) with a CO2 Laser system. By using a high precision translational system and controlled power, short LPG having significantly less inscriptions than usual may be obtained, while keeping good sensing parameters: 30dB peak loss and sensitivity of 109 pm/ºC.

© 2012 Optical Society of America

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