Daniel Kunicki

Maksymilian Pluta Institute of Applied Optics

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Łukasz Szostkiewicz

Warsaw University of Technology

Beata Bienkowska

Maksymilian Pluta Institute of Applied Optics

T. Tenderenda

Maksymilian Pluta Institute of Applied Optics

Tomasz Stańczyk

Kielce University of Technology

Paweł Mergo

Maria Curie-Skłodowska University

M. Murawski

University College London

Tomasz Nasiłowski

Atotech (United States)

M. Szymański

Jagiellonian University

Krzysztof Poturaj

Maria Curie-Skłodowska University

Marek Napierana

Cooperative Institutions

Military University of Technology in Warsaw

Warsaw University of Technology

Maksymilian Pluta Institute of Applied Optics

École Polytechnique Fédérale de Lausanne

Maria Curie-Skłodowska University

Wrocław University of Science and Technology

WB Electronics (Poland)

Atotech (United States)

Foundation for Polish Science

University of Warsaw

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Terapeuta - partner, lekarz czy działacz społeczny?

Jan Bożęcki Kazimierz Radwan Daniel Kunicki

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Precise interferometric system for fast contactless measurements of lens thickness

Michalina Jóźwik M. Szymański Stanisław Lipiński Tomasz Stańczyk Daniel Kunicki

In the process of the lens production it is extremely important that a total time of measuring the lens thickness, taking into account also the time needed to insert the lens into a system, should be short enough to test the substantial part of the series of products. Currently used methods of measuring lens thickness apply various solutions [1, 2], but none of them offers a fast and cost effective system which is capable to perform contactless measurement combined with high accuracy. For optical reflection measurements (e.g. employing the Michelson interferometer), which are the most common, the lens alignment must be very precise, so it takes a lot of time (even a few minutes, which depends on the lens parameters, such as radius of curvature) to perform measurement of a single lens.

Radius of curvature

Reflection

10.1109/cleoe-eqec.2017.8086902

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Optical fiber strain sensor for application in intelligent intruder detection systems

T. Tenderenda Tomasz Stańczyk Łukasz Szostkiewicz Beata Bienkowska Daniel Kunicki

Nowadays technology allows to create highly effective Intruder Detection Systems (IDS), that are able to detect the presence of an intruder within a defined area. In such systems the best performance can be achieved by combining different detection techniques in one system. One group of devices that can be applied in an IDS, are devices based on Fiber Optic Sensors (FOS). The FOS benefits from numerous advantages of optical fibers like: small size, light weight or high sensitivity. In this work we present a novel Microstructured Optical Fiber (MOF) characterized by increased strain sensitivity dedicated to distributed acoustic sensing for intelligent intruder detection systems. By designing the MOF with large air holes in close proximity to a fiber core, we increased the effective refractive index sensitivity to longitudinal strain. The presented fiber can be easily integrated in a floor system in order to detect any movement in the investigated area. We believe that sensors, based on the presented MOF, due to its numerous advantages, can find application in intelligent IDS.

Distributed Acoustic Sensing

10.1117/12.2278507

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Overcoming the capacity crunch: ITU-T G.657.B3 compatible 7-core and 19-core hole-assisted fibers

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2017)

Anna Ziołowicz Łukasz Szostkiewicz Ł. Ostrowski T. Tenderenda Marta Napierała

We present the novel 7-core and 19-core hole-assisted fibers designed to satisfy the most demanding requirements of the ITU-T G.657.B3 recommendation for bend-insensitive fibers. The fibers are compatible with standard single-mode fibers with regard to modal properties, dispersion characteristics, and transmission loss. The fibers presented exhibit no crosstalk and it is possible to use them together with other multiplexing methods like CWDM or DWDM. Dedicated fanin/ fan-outs have been created in order to make immediate use in industry possible. The hole-assisted 19-core fiber with single-mode cores is being presented for the very first time.

Crosstalk

Optical add-drop multiplexer

Multi-core processor

10.1117/12.2252366

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Analysis of phase sensitivity to longitudinal strain in microstructured optical fibers

Optics Express (2017)

T. Tenderenda Łukasz Szostkiewicz Tomasz Stańczyk Beata Bienkowska Daniel Kunicki

We investigate the influence of air holes on phase sensitivity in microstructured optical fibers to longitudinal strain. According to the numerical simulations performed, large air holes in close proximity to a fiber core introduce significant compression stress to the core, which results in an increase in the effective refractive index sensitivity to longitudinal strain. The theoretical investigation is verified by an experiment performed on four fibers drawn from the same preform and differentiated by air hole diameter. We show that introducing properly designed air holes can lead to a considerable increase in normalized effective refractive index sensitivity to axial strain from -0.21 ε-1 (for traditional single mode fiber) to -0.14 ε-1.

Microstructured optical fiber

Strain (injury)

10.1364/oe.25.012216

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Citations (5)