Design and Characterization of a Pressure Sensor Based on FBG on Steel Substrate

Abstract

In this paper a new optical, Fiber Bragg Grating (FBG) based, pressure sensor is presented. The sensor adopts a stainless steel membrane with a FBG sensor attached and is thought to be used in a multi parametric multi-sensor system aimed at the detection of water leakages in potable water networks. The sensor has been experimentally characterized on a reference plant in the range of pressure 0–6 bar. Main metrological characteristics of the lab-scale prototype developed are: a sensitivity of 0.314 nm/bar, an accuracy of about 39 mbar and a resolution of about 1.5 mbar.

Integrated fiber optic gyroscope based on silicon lithium niobate thin waveguide

“…With the development of micro nano processing technology, the quality and function of photonics devices on LNOI have been significantly improved in recent years, and the research of integrated photonics devices based on LNOI has also been developed rapidly [11] .…”