Recent development in fiber optic sensing technology has mainly focused on discrete sensing, particularly,
sensing systems with potential multiplexing and multi-parameter capabilities. Bragg grating fiber optic
sensors have emerged as the non-disputed champion for multiplexing and simultaneous multi-parameter
sensing for emerging high value structural components, advanced processing and manufacturing capabilities
and increased critical infrastructure resilience applications. Although the number of potential applications for
this sensing technology is large and spans the domains of medicine, manufacturing, aerospace, and public
safety; critical issues such as fatigue life, sensitivity, accuracy, embeddability, material/sensor interface
integrity, and universal demodulation systems still need to be addressed.
The purpose of this paper is to primarily evaluate Commercial-Of-The-Shelf (COTS) Fiber Bragg Grating
(FBG) sensors’ sensitivity to pressure, often neglected in several applications. The COTS fiber sensitivity to
pressure is further evaluated for two types of coatings (Polyimide and Acrylate), and different arrangements
(arrayed and single).