[7a-PA5-1~22] 3.8 Optical measurement, instrumentation, and sensor

▲ [7a-PA5-10] 3D Printed Mechanically Induced Long-Period Fiber Grating for Power Attenuation

〇Ravivudh Khunin^1,2, Kouya Nanjo¹, Yuttapong Jiraraksopakun², Apichai Bhatranand², Hideki Yokoi^1,3 (1.Shibaura Inst. of Tech, 2.King Mongkuts University of Technology Thonburi, 3.SIT Research Center for Green Innovation)

Keywords:long-period fiber grating, mechanically induced LPFG

A long-period fiber grating (LPFG) has a key ability of mode coupling from fundamental core mode to cladding modes. This can be beneficially used as a fiber optic filter. Mechanically induced LPFG has been developed in recent years for simpler technique comparing with other methods i.e. irradiation by CO₂ lasers, arc discharge, and etching discharge. In addition, there are several types of mechanically induced LPFGs. This paper presents the novel 3D printed mechanically induced LPFG, that is printed by a translucent and hard material called RGD720. This mechanically induced LPFG is directly pushed on to the fiber as perturbation point to attenuate the power.