Center embossed diaphragm design guidelines and Fabry–Perot diaphragm fiber optic sensor

This research established the design guidelines for center embossed diaphragms for micro-diaphragm fiber type sensors. Following the guidelines, a center embossed diaphragm fiber optic sensor (CE-DFOS) based on Fabry–Perot interference was designed and fabricated with micro-electro-mechanical system (MEMS) technology. The CE-DFOS was experimentally verified to have the designed intrinsic frequency, and demonstrated high sensitivity in parallel testing with a piezoelectric (PZT) sensor.