Abstract
An all fiber interrogation technique for Bragg sensors is presented. It is based on generation of an electric carrier by modulating the coupling length of a wavelength division multiplexer. Results are given when both serrodyne and sinusoidal modulation formats are considered.

Abstract
An all fiber technique for interrogation of interferometric low-finesse Fabry-Perot cavities is presented. It is based on the modulation of the spectral transfer function of a wavelength division multiplexer. Results are given when both serrodyne and sinusoidal modulation formats are considered.

Abstract
Two self-referenced intensity based optical fiber sensors supported on a Michelson sensing head configuration with and without optical feedback are described. Theoretical and experimental studies that demonstrate both sensors are discussed.

Abstract
We present a new sensor configuration based on the intrinsic bend sensitivity of Bragg gratings written in D-type fibres. This sensor can be embedded in any layer of a composite material to evaluate curvature in a way independent of axial strain or temperature. It can also be used to measure other parameters such as acceleration, angle or acoustic pressure.

Abstract
A self-referenced fibre optic intensity sensor supported by a multiple beam Sagnac configuration is investigated. Sensor linearity and sensitivity are analysed. Theoretical and experimental results are compared, being considered the sensor design and its optimisation.

Abstract
Monitoring and control of RTM process is essential to minimise trial and errors and optimise cycle productions. Hence a research programme was established to study different systems to control the process. In this paper, several experiments are described in which an on-line system based on fibre Bragg sensors was implemented.