Vrije Universiteit Brussel

Inphotech Sp. Z O.o.

Wroclaw University of Technology

Uniwersytet Marii Curie Sklodowskiej

Krzysztof Grzegorz Poturaj

Tomasz Nasilowski

Mariusz Makara

Hugo Thienpont

Marek Napierala

Lukasz Szostkiewicz

Francis Berghmans

Thomas Geernaert

Karol Wysokinski

Waclaw Urbanczyk

Dawid Budnicki

Pawel Mergo

Tadeusz Martynkien

Jacek Marek Olszewski

Jan Jozef Wojcik

Krzysztof Wilczynski

Disclosed is an interferometric fiber optic sensor for detecting chemical substances. A light source a detector are connected to a light dividing element in an optical path with an optical fiber segment. The optical fiber segment is further optically coupled with a measuring element across a residual cavity. The measuring element further has a face adapted to be exposed to a test substance that may contain a chemical substance to be detected. The optical fiber segment and the measuring element can be held together so that there is only the residual cavity between them. The optical fiber segment is contained, at least along part of its length, within a capillary. A first end part of the capillary is joined with the measuring element while another portion of the capillary is joined or clenched on the optical fiber segment, so that the capillary, the optical fiber segment and the measuring element together form a fiber optic measuring probe as a part of the optical path with the light source and detector.

Interferometric fiber optic sensor, fiber optic probe and method of detection of chemical substance

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

Growing community of inventors

Lublin, Poland

Krzysztof Grzegorz Poturaj