Information integrated glass module fabricated by integrated additive and subtractive manufacturing

Abstract

In this letter, we report a novel integrated additive and subtractive manufacturing (IASM) method to fabricate information integrated glass module. After a certain number of glass layers are 3D printed and sintered by direct CO 2 laser irradiation, a microchannel will be fabricated on top of the printed glass by integrated picosecond laser, for intrinsic Fabry-Perot interferometer (IFPI) optical fiber sensor embedment. Then glass 3D printing process continues for the realization of bonding between optical fiber and printed glass. Temperature sensing up to 1000°C was demonstrated using the fabricated information integrated module. In addition, the long-term stability of the glass module at 1000°C was conducted. Enhanced sensor structure robustness and harsh temperature sensing capability makes this glass module attractive for harsh environment structural health monitoring.