Vrije Universiteit Brussel

Universite Du Quebec a Hull

Wroclaw University of Technology

Uniwersytet Marii Curie Sklodowskiej

Waclaw Urbanczyk

Hugo Thienpont

Tomasz Nasilowski

Wojtek J Bock

Francis Berghmans

Thomas Geernaert

Mariusz Makara

Krzysztof Grzegorz Poturaj

Tadeusz Martynkien

Jacek Marek Olszewski

Jan Jozef Wojcik

Pawel Mergo

Fiber structure including a core and a cladding, a central microstructure having a first plurality of longitudinal holes and which is adapted for guiding optical radiation and for birefringence in the core. Also included is a side microstructure having a second plurality of longitudinal holes is provided, wherein the side microstructure partly surrounds the central microstructure and provides a predetermined mechanical anisotropy, a pressure responsive unit for converting an isotropic pressure force to birefringence changes on the core, a lateral force responsive unit for converting a directional pressure force to birefringence changes on the core, a temperature responsive unit for converting temperature to birefringence changes on the core, and a birefringence responsive unit for converting birefringence in the core to wavelength information.

Birefringent micro-structured optical fiber for sensor application

An apparatus and a method are provided for measuring an ambient physical parameter applied to a highly birefringent sensing fiber. A light source emits a low coherence light beam into a sensing fiber subjected to an ambient physical parameter. A collector receives the output light beam of the sensing fiber and a splitter divides the output light beam into two orthogonally polarized output beams and subjects the two orthogonally polarized output beams to a range of relative delays. A recombiner combines the two orthogonally polarized output beams to produce an interference pattern, and a detector detects intensities of the interference pattern over the range of delays. A calculating device determines the ambient parameter from the intensities with improved accuracy.

Apparatus for measuring an ambient isotropic parameter applied to a

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Wroclaw, Poland

Waclaw Urbanczyk