Bremer, K,Lewis, E,Leen, G,Moss, B,Lochmann, S,Mueller, I,

2011 IEEE SENSORS

Temperature compensated miniature all-glass fibre optic pressure sensor

2011

May

Published

1

()

PEROT INTERFEROMETRIC SENSORS SIGNAL-PROCESSING ALGORITHM WHITE-LIGHT INTERFEROMETRY DIAPHRAGM

105

108

In this paper the low pressure response and resolution of a temperature compensated miniature all-glass Fibre Optic Pressure Sensor (FOPS) is evaluated. The active temperature compensation of a diaphragm based all-silica Extrinsic Fabry Perot Interferometric (EFPI) FOPS is established by encapsulating a Fibre Bragg Grating (FBG) within the EFPI cavity. The evaluation is performed by using an extended White Light Interrogation (WLI) system. Due to its several advantages the reported FOPS has already been successfully applied in measuring pressure in an exhaust system of a vehicle as well as in a simulated geothermal well.