Optical in-fibre grating high pressure sensor

Piezoelectric-modulated optical fibre Bragg grating high-voltage sensor

A high-voltage sensor was developed by driving optical fibre Bragg gratings, mechanically fixed along the radial direction, with a conventional piezoelectric disc. A wavelength shift modulation is obtained as a result of the converse piezoelectric effect. The measured output signal is linear. The voltage upper limit depends on the type and thickness of the piezoceramic. A sensor built with a di...

Locally Pressed Fibre Bragg Grating Pressure Sensor

A spectral-hole created by locally pressing a fibre Bragg grating (FBG)s exhibited a wavelength-shift within the FBG bandwidth. A sensitivity of 74.3 pm/(N/mm) was obtained for pressure applied along the slow axis of a high birefringence fibre. ©2006 Optical Society of America OCIS codes: (060.2370) Fiber optics sensors; (060.2420) Fibers, polarization-maintaining

827nm Bragg grating sensor in multimode microstructured polymer optical fibre

Chiral Optical Fibre and Grating

The focal purpose of this thesis is to study chirality specifically in telecommunications area, through the pure chiral fibres (optical fibres constituted by chiral material) and chiral fibre grating (twisted optical fibre), analysing also its behaviour and applications. Nevertheless we shall also address this theme from an economical perspective. The study begins by giving a brief introduction...

Fibre Bragg Grating Filters for Optical Communications

Several steps in the development of Fibre optic Bragg grating for application in tuneable wavelength devices intended to DWDM are presented.