mgr inż. Mateusz Łakomski

Mateusz Łakomski

mgr inż.

  • Zdalny użytkownik: Moodle
    Użytkownik zdalny - profil pobrano z WEEIA
  • Wyślij wiadomość
  • Pełny profil
  • Afiliacja:
    K23 - Katedra Przyrządów Półprzewodnikowych i Optoelektronicznych
  • ORCID IDORCID ID:
    0000-0002-1341-0215

Konsultacje

  • Konsultacje cykliczne

    Dzień tygodnia Początek Koniec Semestr Miejsce (budynek, pokój) Opis
    Poniedziałek 11:15 12:00 2023/24 L B9, 107 Konsultacje online przez Teams są również możliwe po wcześniejszym umówieniu.
  • Więcej o mnie

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    Zachęcam do uczestnictwa w projektach Studenckiego Koła Naukowego Młodych Mikroelektroników działającego przy Katedrze Przyrządów Półprzewodnikowych i Optoelektronicznych. W ramach SKNMM jestem opiekunem sekcji światłowodowej pod nazwą fiber OPTICS club. 

     

    Wykształcenie:

    2016 – 2022 Politechnika Łódzka, Wydział Elektroniki, Elektryki, Automatyki i Informatyki, specjalność Elektronika, studia stacjonarne doktoranckie, doktorant

    2014 – 2016 Politechnika Łódzka, Wydział Fizyki Technicznej, Informatyki i Matematyki Stosowanej, kierunek Fizyka Techniczna, specjalność Optoelektronika, studia stacjonarne 1,5 roku, magister

    2011 – 2014 Politechnika Łódzka, Wydział Elektroniki, Elektryki, Automatyki i Informatyki, kierunek Elektronika i telekomunikacja, studia stacjonarne 3,5 roku, inżynier

     

  • Publikacje

    2023

    The impact of Optical Fiber Type on the Temperature Measurements in Distributed Optical Fiber Sensor Systems

    Łakomski M., Plona M., Guzowski B., Shatarat I. S. M., "The impact of Optical Fiber Type on the Temperature Measurements in Distributed Optical Fiber Sensor Systems", Pomiary Automatyka Robotyka Vol.27(3/2023), pp. 27-32, DOI: 10.143113/PAR_249/27, 2023


    Abstract: 

    This paper presents the capabilities of using distributed optical fiber sensors (DOFS) to obtain the temperature profile of an optical path made of silica telecom optical fiber. The impact of the optical fiber type on the temperature measurements is also observed. Two types of optical fibers are tested: standard G.652.D and low-loss G.654.C. DOFS systems for temperature measurements are based on the phenomenon of Raman or Brillouin backscattering. In case of Brillouin-based systems, the spectral properties depend on the type of optical fiber and its parameters. The Brillouin frequency shift depends on the temperature around the fiber, as well as the strain applied to the optical fiber. The presented results show that temperature coefficient can also vary depending on the optical fiber type. For the standard G.652.D optical fiber, the temperature coefficient equals 1.12 MHz/°C and 1.14 MHz/°C depending on the tracked peaks, while for the low-loss G.654.C fiber it equal 1.4 MHz/°C.

    2022

    Brillouin backscattering analysis in recent generation of telecom optical fibers

    Lakomski M., Tosik, G. “Brillouin backscattering analysis in recent generation of telecom optical fibers”, Optica Applicata Vol. 52(3), pp. 405-416, DOI: 10.37190/oa220307, 2022

     

    Abstract:

    This paper reports on examination of the latest generation of telecom optical fibers for the Brillouin backscattering strain sensor application. Over 30 fibers from 5 different manufactures have been tested in terms of their ability to create a stable and accurate strain sensor. It has been proved that fibers that belong to the same standard, according to ITU-T (International Telecommunication Union), and even if provided by one manufacturer, demonstrate fundamentally different Brillouin backscattering response. It has been shown that unimodal Brillouin spectrum cannot be treated as the main parameter for fiber selection. In order to achieve accurate and reproducible results of strain measurement, it is necessary to perform initial examination of the fibers over the range of laser pulse width.

    2022

    Analiza zastosowania światłowodowych siatek Bragga do pomiaru strzałki ugięcia

    Woźniak A., Łakomski M., Tosik G., Lisik Z., „Analiza zastosowania światłowodowych siatek Bragga do pomiaru strzałki ugięcia”, Przegląd Elektrotechniczny Vol. 98, Iss. 02/2022, str. 83-86, DOI: 10.15199/48.2022.02.17

    Abstrakt:

    W niniejszym artykule przedstawiono możliwości wykorzystania światłowodowych siatek Bragga do wyznaczenia strzałki ugięcia materiału, poddanego działaniu siły gnącej. Wykorzystana w badaniach metoda pomiarowa bazuje na zjawisku wstecznego odbicia długości fali Bragga, która umożliwia punktowy odczyt odkształceń oraz temperatury. W artykule przedstawiony został wpływ grubości materiału oraz miejsca mocowania siatek Bragga na wartość odczytanych odkształceń materiału, a także na ich podstawie wyznaczona została wartość strzałki ugięcia.

    2021

    Temperature Sensor Based on Periodically Tapered Optical Fibers

    Guzowski, B., Łakomski, M. "Temperature Sensor Based on Periodically Tapered Optical Fibers", Sensors, Vol. 21(, Iss. 24, no. 8358, DOI: 10.3390/s21248358, 2021

    Abstract:

    In this paper, the fabrication and characterization of a temperature sensor based on periodically tapered optical fibers (PTOF) are presented. The relation between the geometry of the sensors and sensing ability was investigated in order to find the relatively simple structure of a sensor. Four types of PTOF structures with two, four, six and eight waists were manufactured with the fusion splicer. For each PTOF type, the theoretical free spectral range (FSR) was calculated and compared with measurements. The experiments were conducted for a temperature range of 20–70 °C. The results proved that the number of the tapered regions in PTOF is crucial, because some of the investigated structures did not exhibit the temperature response. The interference occurring inside the structures with two and four waists was found be too weak and, therefore, the transmission dip was hardly visible. We proved that sensors with a low number of tapered regions cannot be considered as a temperature sensor. Sufficiently more valuable results were obtained for the last two types of PTOF, where the sensor’s sensitivity was equal to 0.07 dB/°C with an excellent linear fitting (R> 0.99). The transmission dip shift can be described by a linear function (R> 0.97) with a slope α > 0.39 nm/°C.

    2021

    Optical Fiber Sensor for PVC Sheet Piles Monitoring

    Lakomski, M., Tosik, G., Niedzielski, P., "Optical Fiber Sensor for PVC Sheet Piles Monitoring", Electronics, Vol. 10(, Iss. 10, no. 1604, DOI: 10.3390/electronics10131604, 2021

    Abstract:

    This paper examined the impact of optical fiber sensor design, and its integration to PVC (polyvinyl chloride) sheet piles, on deflection and strain monitoring. Optical fiber sensors based on Brillouin light backscattering (BLS) were prepared, as they can provide accurate strain and deflection measurement results. However, depending on the application of sheet piles systems, high deformation of PVC elements can be observed. Therefore, a fiber sensor design is not trivial. Three types of optical fiber coatings and their integration with PVC sheet piles were investigated. The effect on the value of compressive and tensile strain were analyzed. It has been experimentally proven that PVC sheet piles monitoring, based on BLS method, can be realized using optical fibers with 250 µm, 900 µm, and 3 mm coating diameter. Achieved results are in line with theory. Correction coefficient necessary for 900 µm and 3 mm coatings has been proposed and used to ensure proper strain measurement. It was found that 250 µm coating fiber based sensors can be utilized for PVC strain measurement under low deflection (>1.2 m beam length). On the other hand, sensors based on 3 mm coating fiber, due to a high level of linearity, can be applied to deflection distance measurement under high deformation.

    2020

    Fabrication of ultra-long tapered optical fibers

    Lakomski, M., Guzowski, B., Wozniak, A., "Fabrication of ultra-long tapered optical fibers", Microelectronic Engineering, Vol. 221, no. 111193, DOI: 10.1016/j.mee.2019.111193, 2020

    Abstract:

    In this paper the detailed description of tapered optical fiber (TOF) fabrication process with the use of fusion splicer is given. Developed method allows TOF fabrication of a given waist region length l up to 4 mm with a micrometers resolution, while their diameters were 41 μm ± 5 μm. The TOF mean symmetry coefficient was scoef = 1.05. The Insertion Losses (IL) of all fabricated TOF were low, below 2.5 dB for both 850 nm and 1300 nm wavelengths.

    2018

    Realization of fiber optic displacement sensors

    Guzowski, B., Lakomski, M., “Realization of fiber optic displacement sensors”, Optical Fiber Technology, Vol. 41, pp.34-39, DOI: 10.1016/j.yofte.2017.12.018, 2018

     

    Abstract:

    Fiber optic sensors are very promising because of their inherent advantages such as very small size, hard environment tolerance and impact of electromagnetic fields. In this paper three different types of Intensity Fiber Optic Displacement Sensors (I-FODS) are presented. Three configurations of I-FODS were realized in two varieties. In the first one, the cleaved multimode optical fibers (MMF) were used to collect reflected light, while in the second variety the MMF ended with ball lenses were chosen. To ensure an accurate alignment of optical fibers in the sensor head the MTP C9730 optical fiber ferrules were used. In this paper the influence of distribution of transmitting and detecting optical fibers on sensitivity and linear range of operation of developed I-FODS were investigated. We have shown, that I-FODS with ball lenses receive average 10.5% more reflected power in comparison to the cleaved optical fibers and they increase linearity range of I-FODS by 33%. In this paper, an analysis of each type of the realized sensor and detailed discussion are given.

    2018

    WDM power supply for identification system of fibre optic connectors

    Guzowski, B., Gozdur, R., Lakomski, M., “WDM power supply for identification system of fibre optic connectors”, Metrology and Measurement Systems, Vol. 25, Iss. 1, pp. 235-244, DOI: 10.24425/118172, 2018

     

    Abstract:

    Monitoring and controlling the position of fibre optics connectors is a very important issue. Both autonomy and remote control of such a system are very desired and therefore energy independence must be provided. In this paper the design of an optical power supply system is given. A new idea of using the WDM technique in a power supply block is investigated. The electric power provided by a photovoltaic power converter and by a boost converter is shown. Moreover, in this paper the complete examination of efficiency of the system with different illuminations is given. The maximal output power of the system is 24.02 mW and the time required to identify a single fibre connector is tCYCLE=0.65 s.

    2018

    Thermoelectric generation based on Spin Seebeck Effect in NiFeCuMo alloy

    Guzowski, B., Gozdur, R., Lakomski, M., „Thermoelectric generation based on Spin Seebeck Effect in NiFeCuMo alloy”, Acta Physica Polonica A, Vol. 133, Iss 3, pp. 514-543, DOI: 10.12693/APhysPolA.133.541, 2018

    Abstract: 

    An overview of the achieved Inverse Spin Hall Effect voltage (VISHE) is presented to find upper limit of this VISHE. Comprehensive review confirms that the most significant spin systems are based on YIG substrate. The Pt ISHE interfaces are the most popular, however, the best result was reported for the Ir₂₀Mn₈₀ ISHE interface. Moreover, in this paper the transvers spin Seebeck effect (SSE) is measured in bulk sample of Ni76.1Fe5.9Cu4.3Mo3.6 with Pt interface. The max. measured value of VISHE for NiFeCuMo alloy with Pt is 0.493 μV with ΔT= 21.5 K.

    2017

    Autonomiczny system identyfikacji złączy optycznych

    Guzowski, B., Gozdur, R., Łakomski, M., Woźniak, A., “Autonomous system for identification of optical connectors”, Przeglad Elektrotechniczny, Vol. 93, Iss. 8/2017, DOI: 10.15199/48.2017.08.18, 2017

     

    Abstrakt:

    Streszczenie. Opracowywany jest identyfikator RFID złącza światłowodowego. Ten system powinien być autonomiczny i musi umożliwiać wdrożenie w części dystrybucyjnej pasywnych sieci optycznych (PON). Nie należy rozpatrywać konwencjonalnego źródła zasilania ze względu na brak energii elektrycznej w ODN. Dlatego alternatywne źródło zasilania jest proponowane do zasilania tego systemu. Przetwornik fotowoltaiczny (PPC) jest przeznaczony do przekształcania światłowodu o światło pochodzące z energii elektrycznej. Wydaje się, że światło laserowe przekształcane w energię elektryczną jest najbardziej dogodną opcją w ODN. Ponadto w niniejszym artykule przedstawiono zdolność przesyłania energii i danych w pojedynczym światłowodzie wielomodowym (MMF). W tym artykule udowodniono, że realizowany hybrydowy system transmisji światłowodowej umożliwia zasilanie systemu identyfikacji, a także przesyłanie danych

    2017

    RFID monitoring system of fiber optic connectors

    Guzowski B., Gozdur R., Lakomski M., Bernacki Ł., “RFID monitoring system of fiber optic connectors”, Circuit World, Vol. 43 Iss 1, pp. 32-37, 2017, DOI: 10.1108/CW-10-2016-0041

     

    Abstract:

    Purpose: The purpose of this paper is to develop identification system for fiber optic connectors in passive distribution cabinets. The system should have alternative power supply and wireless communication unlike the identification systems commercially available, which will make the system fully autonomous.

    Design/methodology/approach Detailed project and realization of real demonstrator of fully autonomous identification system. After the realization of the demonstrator, its optimization was performed.

    Findings It is possible to build fully autonomous identification system which requires 15.6 mJ energy to perform one cycle of identification process. Moreover, it is possible to use the alternative power method to supply this system.

    Originality/value Fully autonomous identification system of fiber optic connectors with alternative power supply and wireless communication.

    2016

    Realization and characterization of fiber optic reflective sensor

    Guzowski B., Łakomski M., Słapek B., „Realization and characterization of fiber optic reflective sensor”, Proc. SPIE 10161, 101610I, 2016

     

    Abstract:

    In almost all of non-invasive techniques, fiber optic sensors may be the most promising ones because of their inherent advantages such as very small size and hard environment tolerance. Proximity sensors based on optical fiber are highly required especially in the impact area of electromagnetic fields. In this paper three different types of fiber optic reflective sensors are presented. In all three types of the sensor four multimode optical fibers (MMF) illuminate the movable surface. The difference is in the number of collecting the reflected light MMF. In the first one, 12 MMF collect the light, in the second one 20 MMF, while in the third one the number of MMF collecting reflected light is 32. Moreover, all three types of fiber optic reflective sensors were realized in two configurations. In the first one, the cleaved MMF were used to collect reflected light, while in the second configuration – the ball-lensed optical fibers were chosen. In this paper an analysis of each type of realized sensor is presented. In the last part of this paper the obtained results and the detailed discussion are given.

    2016

    Realization of a fiber optic sensor detecting the presence of a liquid

    Guzowski B., Łakomski M., Nowogrodzki K., “Realization of a fiber optic sensor detecting the presence of a liquid”, Proc. SPIE 10161, 101610J, 2016

     

    Abstract:

    Over the past thirty years, optical fibers have revolutionized the telecommunication market. Fiber optics play also important roles in other numerous applications. One of these applications is fiber sensing – very fast developing area. In this paper, realization of different configurations of a fiber optic sensor detecting the presence of liquid is presented. In the presented sensor, two multimode fibers (MMF) are placed opposite each other, where the first one transmits the light radiation, while the second one is a receiver. Due to the small size of the core (50 μm diameter), they had to be precisely positioned. Therefore the optical fibers were placed in the etched channels in the silicon substrate. In order to make sensors more sensitive, ball-lensed optical fibers were used. Four different diameters of lenses were examined. Sensitivity to the presence of liquids was compared in all realized sensors. Moreover, the influence of distance between the transmitting and receiving optical fiber on the received optical power is also described in this paper. All developed sensors were tested at 1300 nm wavelength. In the last part of this paper the detailed discussion is given.

    2016

    Investigations of DC power supplies with optoelectronic transducers and RF energy converters

    Guzowski B., Gozdur R., Bernacki Ł., Łakomski M., “Investigations of DC power supplies with optoelectronic transducers and RF energy converters”, Journal of Physics: Conference Series, Vol. 709, 012008, 2016

     

    Abstract:

    Fiber Distribution Cabinets (FDC) monitoring systems are increasingly popular. However it is difficult to realize such system in passive FDC, due to lack of source of power supply. In this paper investigation of four different DC power supplies with optoelectronic transducers is described. Two converters: photovoltaic power converter and PIN photodiode can convert the light transmitted through the optical fiber to electric energy. Solar cell and antenna RF-PCB are also tested. Results presented in this paper clearly demonstrate that it is possible to build monitoring system in passive FDC. During the tests maximum obtained output power was 11 mW. However all converters provided enough power to excite 32-bit microcontroller with ARM-cores and digital thermometer.

    2015

    Realizacja światłowodów zakończonych mikrosoczewkami kulistymi dla złączy soczewkowych

    Łakomski M., Guzowski B., Lisik Z., Tylak K., Turek M., “Realizacja światłowodów zakończonych mikrosoczewkami kulistymi dla złączy soczewkowych”, Elektronika: konstrukcje, technologie, zastosowania, rocznik LVI, nr 10, pp. 34-37, 2015, DOI: 10.15199/13.2015.10.8

     

    Abstrakt:

    W niniejszym artykule omówiony został proces modelowania i realizacji światłowodów jednomodowych zakończonych mikrosoczewkami kulistymi. Przedstawiono cztery rodzaje mikrosoczewek wykonanych w Laboratorium Technik Światłowodowych Politechniki Łódzkiej. Wyznaczone w symulacjach ogniskowe soczewek, porównano z ogniskowymi wyznaczonymi podczas pomiarów. 

    2015

    Proximity sensors based on ball-lensed optical fibers

    Guzowski B., Łakomski M., Cywiński M., “Proximity sensors based on ball-lensed optical fibers”, IOP Conf. Series: Materials Science and Engineering, Vol. 104, 012031, 2015

     

    Abstract:

    In this paper, proximity sensors based on ball-lensed single-mode fibers (SMF) are described. Two types of sensors are presented: (1) Type A with one transmitting and four receiving optical fibers and (2) Type B with one transmitting and eight receiving optical fibers. In both types ball-lensed optical fibers are used as a receiving line. Sensitivity of these sensors is compared to sensitivity of sensors with the same configurations, but involving cleaved optical fibers. All developed sensors were tested at two most popular in SMF wavelengths: 1310 nm and 1550 nm. As a refractive surface the silicon wafer was used.

    2014

    Proximity sensors based on ball-lensed optical fibers

    Guzowski B., Cywiński M., Łakomski M., “Proximity sensors based on ball-lensed optical fibers”, Proceedings of SPIE - The International Society for Optical Engineering, Vol. 9291(1): 92910H, pp. 1-6, 2014

     

    Abstract:

    Reflective sensors involving optical fibers are very popular due to low cost and EMI insensitive. In this paper, a new concept is described regarding proximity sensors based on ball-lensed optical fibers (PSBBOF). Two types of sensors are presented: (1) Type A with one transmitting and four receiving optical fibers and (2) Type B with one transmitting and eight receiving optical fibers. In both PSBBOF types ball-lensed optical fibers are used as a receiving line. Sensitive of both PSBBOF is compared to sensitive of sensors with the same configurations, but involving cleaved optical fibers. All developed sensors were tested at two wavelengths: 850 nm and 1300 nm. As a refractive surface the silicon wafer was used.

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