Polish Center For Photonics and Fibre Optics

Rogoznica, Poland

Polish Center For Photonics and Fibre Optics

Rogoznica, Poland
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Ziolowicz A.,InPhoTech Ltd | Ziolowicz A.,Warsaw University of Technology | Szymanski M.,Polish Center For Photonics and Fibre Optics | Ostrowski L.,Polish Center For Photonics and Fibre Optics | And 7 more authors.
Workshop on Specialty Optical Fibers and their Applications, WSOF 2015 | Year: 2015

We present an approach to crosstalk limitation and higher order modes suppression in multicore hole-assisted fibers. Our designed and fabricated fiber is compliant with singlemode fiber standards, hence can be utilized in space division multiplexing. © OSA 2015.


Wysokinski K.,InPhoTech | Stanczyk T.,InPhoTech | Gibala K.,P.H. ELMAT | Tenderenda T.,InPhoTech | And 6 more authors.
Materials | Year: 2014

Microstructured optical fibers can be precisely tailored for many different applications, out of which sensing has been found to be particularly interesting. However, placing silica optical fiber sensors in harsh environments results in their quick destruction as a result of the hydrolysis process. In this paper, the degradation mechanism of bare and metal-coated optical fibers at high temperatures under longitudinal strain has been determined by detailed analysis of the thermal behavior of silica and metals, like copper and nickel. We furthermore propose a novel method of enhancing the lifetime of optical fibers by the deposition of electroless nickel-phosphorous alloy in a low-temperature chemical process. The best results were obtained for a coating comprising an inner layer of copper and outer layer of low phosphorous nickel. Lifetime values obtained during the annealing experiments were extrapolated to other temperatures by a dedicated model elaborated by the authors. The estimated copper-coated optical fiber lifetime under cycled longitudinal strain reached 31 h at 450 °C. © 2014 by the authors.


Napierala M.,InPhoTech Ltd. | Napierala M.,Military University of Technology | Ziolowicz A.,InPhoTech Ltd. | Ziolowicz A.,Warsaw University of Technology | And 12 more authors.
Photonics Letters of Poland | Year: 2015

We report on a new type of multicore fibres dedicated to a new generation of telecommunication networks. We designed and fabricated seven core fibres for (i) passive signal transmission, (ii) signal amplification and (iii) 1×7 signal division. In each case, the same cores and air-holes arrangement is used. However, a different operation is achieved by employing different cores doping and varying structural parameters of fibre, such as air-holes and cores diameters. We present the experimental results of measurements performed for developed multicore fibres and multicore fibre components. © 2015 Photonics Society of Poland.


Ziolowicz A.,InPhoTech Sp. Z O. O. | Szymanski M.,InPhoTech Sp. Z O. O. | Szymanski M.,Military University of Technology | Szostkiewicz L.,Polish Center for Photonics and Fibre Optics | And 22 more authors.
Applied Physics Letters | Year: 2014

We present a multicore fiber dedicated for next generation transmission systems. To overcome the issue of multicore fibers' integration with existing transmission systems, the fiber is designed in such a way that the transmission parameters for each core (i.e., chromatic dispersion, attenuation, bending loss, etc.) are in total accordance with the obligatory standards for telecommunication single core fibers (i.e., ITU-T G.652 and G.657). We show the results of numerical investigations and measurements carried out for the fabricated fiber, which confirm low core-to-core crosstalk and compatibility with standard single-core single-mode transmission links making the fiber ready for implementation in the near future. © 2014 AIP Publishing LLC.


Stanczyk T.,InPhoTech | Fidelus J.,InPhoTech | Wysokinski K.,InPhoTech | Lipinski S.,InPhoTech | And 6 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

In this work we present an innovative method of enhancing optical fibers' resistance to extremely high temperatures by deposition of a multilayer metal coating on the fibers' surface. Such multilayer coating is necessary because of the silica degradation at elevated temperatures. Despite the fact that copper coated fibers work well at temperatures up to 400°C, at higher temperatures copper oxidizes and can no longer protect the fiber. To hold back the copper oxidation and silica degradation processes we developed a dedicated multilayer coating which allows fibers to operate at temperatures up to 700°C. The optimal protective layer has been chosen after numerous high-Temperature tests, where copper plates coated with different kinds of coatings were evaluated. What is more, we present results of the high-Temperature reliability tests of copper coated fibers protected with our multilayer coating. Performed tests proved that our solution significantly improved optical fibers' reliability to both: elevated temperatures and rapid changes of temperature. Furthermore the developed metal coatings allow fibers' to be electrolytically bonded to other metal elements (e.g. sensor transducers) what makes them great candidates for harsh environment fiber optic sensor applications. © 2015 SPIE.


Wysokinski K.,InPhoTech | Napierala M.,InPhoTech | Stanczyk T.,Polish Center for Photonics and Fibre Optics | Lipinski S.,InPhoTech | Nasilowski T.,InPhoTech
Sensors (Switzerland) | Year: 2015

Optical fibre carbon dioxide (CO2) sensors are reported in this article. The principle of operation of the sensors relies on the absorption of light transmitted through the fibre by a silica gel coating containing active dyes, including methyl red, thymol blue and phenol red. Stability of the sensor has been investigated for the first time for an absorption based CO2 optical fiber sensor. Influence of the silica gel coating thickness on the sensitivity and respone time has also been studied. The impact of temperature and humidity on the sensor performance has been examined too. Response times of reported sensors are very short and reach 2–3 s, whereas the sensitivity of the sensor ranges from 3 to 10 for different coating thicknesses. Reported parameters make the sensor suitable for indoor and industrial use. © 2015 by the authors; licensee MDPI, Basel, Switzerland.


PubMed | InPhoTech and Polish Center for Photonics and Fibre Optics
Type: Journal Article | Journal: Sensors (Basel, Switzerland) | Year: 2015

Optical fibre carbon dioxide (CO) sensors are reported in this article. The principle of operation of the sensors relies on the absorption of light transmitted through the fibre by a silica gel coating containing active dyes, including methyl red, thymol blue and phenol red. Stability of the sensor has been investigated for the first time for an absorption based CO optical fiber sensor. Influence of the silica gel coating thickness on the sensitivity and response time has also been studied. The impact of temperature and humidity on the sensor performance has been examined too. Response times of reported sensors are very short and reach 2-3 s, whereas the sensitivity of the sensor ranges from 3 to 10 for different coating thicknesses. Reported parameters make the sensor suitable for indoor and industrial use.


Wysokinski K.,InPhoTech Sp. z o. o. | Szymanski M.,InPhoTech Sp. z o. o. | Stanczyk T.,Polish Center for Photonics and Fibre Optics | Murawski M.,InPhoTech Sp. z o. o. | And 3 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

An optical fiber CO2 gas sensor is reported in this work. Sensor is based on the change of absorption of a selected dye dissolved in an organically modified silica coating of an optical fiber. C2 in the atmosphere decreases the pH of the deposited active layer, which eventually leads to the change of the fiber transmittance. Elaborated sensor exhibits high sensitivity, short response time and good stability, which makes it suitable for potential industrial, agricultural and household use. Described method can also be used for sensing other gases in sensor matrices. © 2015 SPIE.


Holdynski Z.,InPhoTech Ltd. | Jozwik M.,InPhoTech Ltd. | Murawski M.,Polish Center for Photonics and Fibre Optics | Ostrowski L.,Polish Center for Photonics and Fibre Optics | And 2 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

In this paper we present possibilities of tuning spectrum of supercontinuum with the use of temperature change. Our study is based on the information about the role of dispersion characteristics in the process of nonlinear effects generation in nanosecond pulse regime. We obtain tunable spectrum effects in microstructured fiber and we show how to optimize its properties. Our experimental results showing nonlinear effects generation in fiber pumped in normal and anomalous dispersion regime enables to determine how the nonlinear effects depend on temperature changes. We show that even small changes of dispersion characteristic of microstructured fibers enable to obtain significant modification of generated spectra when four wave mixing is dominant effect. Controllable generation of tunable supercontinuum can be used in numbers of potential applications such as diagnostics and measurement systems. © 2015 SPIE.


Jozwik M.,Polish Center for Photonics and Fibre Optics | Stepien K.,Polish Center for Photonics and Fibre Optics | Lipinski S.,InPhoTech Ltd | Budnicki D.,InPhoTech Ltd | And 2 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

In this paper we present experimental results of measurements of the lens thickness carried out using all fiber low coherence interferometer. A new interferometric device for measuring the thickness of the lens using optical fibers has been developed in response to market demand. It ensures fast, non-contact and accurate measurement. This work focuses above all on the conducting tests to determine the repeatability of the measurement and to verify the ability of using this method in industrial conditions. The system uses a Mach-Zehnder interferometer in which one of the arms is the reference part and the second arm containing the test element is the measurement part. The measurement rate and the easiness of placement of the test lens in the system give the possibility to automate the measurement process. We present the measurement results, which show that the use of low-coherence interferometry allows achieving high measurement accuracy and meeting other industrial needs. © 2015 SPIE.

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