Instytut Wysokich Cisnien Polskiej Akademii Nauk

Inphotech Sp. Z O.o.

Inphotech Spolka Z Ograniczona Odpowiedzialnoscia

Sds Optic Spolka Akcyjna

Janusz Fidelus

Tomasz Nasilowski

Marek Napierala

Lukasz Szostkiewicz

Zbigniew Holdynski

Michal Murawski

Lukasz Ostrowski

Karol Wysokinski

Witold Lojkowski

Dawid Budnicki

Anna Makowska

Ana Pytel

Donats Millers

Larisa Grigorieva

Agnieszka Opalinska

Urszula Narkiewicz

Wieslaw Strek

Magdalena Staniszewska

Marcin Staniszewski

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

A method of measuring oxygen partial pressure in gases, such as hot engine exhaust gases, uses a calibrated luminescence sensor and comprises the steps of bringing nanocrystalline zirconium dioxide ZrO2 () in said sensor into contact with a gas to be measured, illuminating the zirconium dioxide with a UV-VIS light pulse emitted from a light source () and adapted to induce luminescence of the zirconium dioxide, registering the time dependence of the luminescence intensity of the ZrO2 using a photodetector () and a recorder (), determining a particular intensity, e.g., the maximum intensity of the registered luminescence pulse, and comparing said determined intensity with calibration data of the luminescence intensity as a function of oxygen partial pressure for the sensor temperature at the time of the measurement.

Zirconium dioxide luminescence oxygen sensor

Growing community of inventors

Mucharz, Poland

Janusz Fidelus