Inphotech Sp. Z O.o.

Inphotech Spolka Z Ograniczona Odpowiedzialnoscia

Sds Optic Spolka Akcyjna

El-cab Spolka Z Ograniczona Odpowiedzialnoscia

Polskie Centrum Fotoniki I Swiatlowodów

Marek Napierala

Tomasz Nasilowski

Lukasz Szostkiewicz

Zbigniew Holdynski

Alejandro Dominguez-Lopez

Jakub Kaczorowski

Lukasz Ostrowski

Michal Murawski

Tadeusz Tenderenda

Michal Szymanski

Mateusz Slowikowski

Anna Katarzyna Ziolowicz

Karol Stepien

Dawid Budnicki

Karol Wysokinski

Krzystof Markiewicz

Katarzyna Pawlik

Janusz Fidelus

Mariusz Makara

Krzysztof Grzegorz Poturaj

Krzysztof Markiewicz

Piotr Plaszczykowski

Mariusz Biela

Magdalena Staniszewska

Lukasz Szostkiewcz

Marcin Staniszewski

Krzysztof Wilczynski

Ana Pytel

Anna Makowska

Alejandro Dominguez Lopez

Anna Pytel

Krzysztof Poturaj

Anna Ziolowicz

Katarzyna Joanna Pawlik

Michalina JÓZWIK

A temperature monitoring device containing a control system adapted to generate substantially periodic control waveforms applied to the control input of the light source with tunable wavelength connected to an optical fiber interferometer, in which a measuring optical fiber is connected in one its arms, and the interferometer output is connected to a detector whose output is connected to a signal processing module adapted to identify temperature changes in the optical fiber length function, in accordance with the invention, characterized in that the light source coherence length is longer than 0.5 m, and the period of the periodic waveform is shorter than or equal to 20 s, the difference between the minimum and maximum wavelength is higher than 3 pm, and the optical fiber is adapted to its placement near exoenergetic devices in a vehicle, during its operation. The temperature monitoring method according to the invention is characterized in that the temperature is determined by cumulatively accounting for changes detected using the device according to the invention at measurement points on the measuring optical fiber of this device. The temperature monitoring system according to the invention is characterized in that the measuring optical fiber of the device according to the invention is placed near exoenergetic devices in a vehicle.

Temperature monitoring device, temperature monitoring method, and temperature monitoring system

Optical fibre based measurement system having a system for generating radiation (Z) with monotonically tuneable wavelength during sweep periods, an optical path (T) and a detector (D) connected to the system for generating radiation (Z) via the optical path (T). The optical path (T) comprises the interferometer (I) comprising the multi-port element (EW) and the attached measuring optical fibre (F) sensitive to at least two environmental parameters, the mode excitation system (P) adapted for excitation in the measuring optical fibre (F) of at least the measuring mode (Mn1) with the first effective refractive index and the measuring mode (Mn2) with the second effective refractive index, having different sensitivity to these two parameters. The measurement system comprises the processing unit (UP) to which the detector (D) is connected via the analogue-to-digital converter (ADC), and the processing unit (UP) is adapted to generate the control signal for the system for generating radiation (Z). The object of the invention is also the method of measuring at least two parameters, and the computer program product.

Optical fibre based measurement method of measuring parameters, and computer program product

A fibre-optic measurement system equipped with a controlled light generation system () and a receiving system () connected via an optical path which comprises a directional device () and which, in addition, has a processing unit () for controlling the light generation system () and for receiving and processing the signal from the receiving system (), according to the invention, it is characterized by the fact that it has a selective mode device () and is adapted to be connected to a fibre-optic telecommunications network by a selective mode device () and the processing unit () is adapted to implement the OFDR and/or COTDR measurement technique for measuring changes in the optical distance and processing them into one or more parameters. Moreover, the object of the invention is also the method of adaptation of a telecommunications network into a sensor network and a fibre-optic measurement and communication system.

Fibre-optic measurement system, method of adaptation of the communication optical fibre into a measurement system, and fibre-optic measurement and communication system

A microstructured multicore optical fibre (MMOF) includes a cladding in which a plurality of basic cells are formed that run along the MMOF. Each of the basic cells includes a core, and at least one of the basic cells is surrounded by a plurality of longitudinal areas that run parallel to the core along the MMOF and are arranged in a hexagonal arrangement around the core. The longitudinal areas are spaced by a lattice constant &#x39b;. Sides of the hexagon can be shared with adjacent basic cells.

Microstructured multicore optical fibre (MMOF), a device and the fabrication method of a device for independent addressing of the cores of microstructured multicore optical fibre

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

Microstructured multicore optical fibre with a microstructure area, in which, at least two basic cells are embedded, where each of them contains a core, preferably made of glass, specifically including doped silica glass or polymer, together with the surrounding it longitudinal areas with lower refraction index vs. that of the cladding, which areas may adopt the shape of holes, filled with gas, in particular with the air or a fluid or a polymer or spaces of another glass with doping allowing to reduce refractive index (further referred to as holes), embedded in a matrix of glass, in particular of silica glass or polymer. The refraction index of the holes is decreased vs. that of the matrix of glass, in particular of silica glass or polymer. The basic cell is characterised by the diameter of D2 core, the diameter of D3 core and the distance between adjacent holes, corresponding to lattice constant A. The centres of the holes are localised on the vertices and the middle points of the sides of the hexagon, the centre of which is designated by the core; the length of side c of the hexagon, created by the centres of holes, is equal to the preferably doubled lattice constant A. The juxtaposed, at least, two basic cells are surrounded by the cladding, preferably made of glass, in particular of silica glass or polymer. A Device for addressing cores of the multicore optical fibre a fabrication method of the device for addressing cores is also disclosed.

A waveguide interferometer includes a multicore fiber used a multicore waveguide, where the multicore waveguide includes a coupler section formed by tapering a portion of the multicore waveguide so that one core though which a light source is fed is optically coupled to another core that is terminated differently that the core into which the source signal is provided. The terminations respond differently upon being exposed to an environmental condition or substance, and the difference in response to the environmental condition or substance results in a shift in interference of the light reflected back through the multicore waveguide, which is detected with a detector on the same side of the multicore waveguide as the light source.

Waveguide interferometer

Growing community of inventors

Warsaw, Poland

Marek Napierala