Time filter

Source Type

Bagno, Poland

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. Source

Stepien K.,InPhoTech Ltd. | Stepien K.,Military University of Technology | Jozwik M.,InPhoTech Ltd. | Nasilowski T.,InPhoTech Ltd.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

In this paper we present a fiber Bragg grating shift demodulator with changeable resolution based on an unbalanced fiber Mach-Zehnder interferometer. Preliminary research proves phase sensitivity to Bragg wavelength changes of 6,83 rad/mε. Phase sensitivity can be modified by changing the optical path difference witch is only limited by the coherence length of light reflected by the fiber Bragg grating. This solution can be used as a single sensor or as a part of a more complex system. © 2015 SPIE. Source

Stanczyk T.,InPhoTech Ltd. | Wysokinski K.,InPhoTech Ltd. | Filipowicz M.,InPhoTech Ltd. | Tenderenda T.,InPhoTech Ltd. | And 7 more authors.
Journal of Lightwave Technology | Year: 2015

In this study, an innovative method is presented for preparing optical fibers for application in fiber optic sensors operating in harsh environments. It is shown, how to attach a metal-coated fiber electrolytically to a metal sensing element, as well as an electroless method for depositing a nickel protective layer on optical fibers. Additionally, the results of the reliability tests of these methods are presented. It is also shown, that by depositing an additional nickel protective layer, it is possible to slow down the oxidation process of the copper coating. Analysis of the conducted experiments allows us to predict, that the connection method investigated and the method of protecting the fiber are robust and may find application in industrial optical sensors. © 2014 IEEE. Source

Tenderenda T.,InPhoTech Ltd. | Tenderenda T.,Military University of Technology | Skorupski K.,Maria Curie Sklodowska University | Makara M.,Maria Curie Sklodowska University | And 6 more authors.
Optics Express | Year: 2012

We present the results of theoretical and experimental characterization of a designed and manufactured dual-mode highly birefringent microstructured fiber. We also demonstrate the measured values of polarimetric temperature and strain sensitivity of both the fundamental and second order modes. As the mode field of the second order mode has a strong interaction with the fiber air holes, we observed a significant (over two orders of magnitude) increase in the polarimetric strain sensitivity of this mode in comparison to the fundamental mode. The enhanced strain sensitivity together with the low temperature sensitivity makes our fiber very attractive for application as extremely sensitive temperature independent strain transducers. © 2012 Optical Society of America. Source

Oliveira R.,Telecommunications Institute of Portugal | Bilro L.,Telecommunications Institute of Portugal | Marques T.H.R.,University of Campinas | Napierala M.,InPhoTech Ltd. | And 6 more authors.
IEEE Photonics Technology Letters | Year: 2016

We report for the first time, the fast inscription of high-quality Bragg gratings in highly birefringent microstructured polymer optical fibers by the phase mask method using 248-nm UV radiation. The fibers birefringence is created through a special design of the structure of holes through the fiber. A Bragg grating in these type of fibers allows the creation of two reflection peaks, where the peak separation is related to the phase birefringence. © 2015 IEEE. Source

Discover hidden collaborations