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Prof. Elżbieta Bereś-Pawlik
Institute of Telecommunication, Teleinformatics and Acoustics, Wroclaw University of Science and Technology, 50-370 Wrocław, Poland

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0 Laser
0 Laser Applications
0 Optics
0 Optoelectronics
0 Photonics

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Laser
Optics
Photonic and crystal fibers
fiber laser

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Journal article
Published: 11 June 2019 in Applied Sciences
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A novel intensity-modulated Sagnac loop sensor based on polarization-maintaining photonic crystal fiber (PM-PCF) in a setup with a dense wavelength division multiplexer (DWDM) for strain measurement is presented. The sensor head is made of PM-PCF spliced to single-mode fibers. The interferometer spectrum shifts in response to the longitudinal strain experienced by the PM-PCF. After passing the Sagnac loop, light is transmitted by a selected DWDM channel, resulting in a change in the output optical power due to the elongation of PM-PCF. Hence, appropriate adjustment of spectral characteristics of the DWDM channel and the PM-PCF Sagnac interferometer is required. However, the proposed setup utilizes an optical power measurement scheme, simultaneously omitting expensive and complex optical spectrum analyzers. An additional feature is the possibility of multiplexing of the PM-PCF Sagnac loop in order to create a fiber optic sensor network.

ACS Style

Mateusz Mądry; Lourdes Alwis; Elżbieta Bereś-Pawlik. Intensity-Modulated PM-PCF Sagnac Loop in a DWDM Setup for Strain Measurement. Applied Sciences 2019, 9, 2374 .

AMA Style

Mateusz Mądry, Lourdes Alwis, Elżbieta Bereś-Pawlik. Intensity-Modulated PM-PCF Sagnac Loop in a DWDM Setup for Strain Measurement. Applied Sciences. 2019; 9 (11):2374.

Chicago/Turabian Style

Mateusz Mądry; Lourdes Alwis; Elżbieta Bereś-Pawlik. 2019. "Intensity-Modulated PM-PCF Sagnac Loop in a DWDM Setup for Strain Measurement." Applied Sciences 9, no. 11: 2374.

Journal article
Published: 15 January 2019 in Journal of Luminescence
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This contribution reports on detailed experimental and numerical investigations of both near-infrared (NIR) and mid-infrared (MIR) photoluminescence obtained in praseodymium trivalent ion doped chalcogenide-selenide glass fiber. The experimental analysis allows for the identification of the radiative transitions within the praseodymium ion energy level structure to account for the photoluminescent behavior. Numerical analysis is carried out using the rate equations’ approach to calculate the level populations. The numerical analysis provides further insight into the nature of the radiative transitions in the Pr3+ ion doped chalcogenide-selenide glass and allows for the identification of the electronic transitions, which contribute to the observed photoluminescence. The numerical results agree well with the experimental results.

ACS Style

Slawomir Sujecki; Lukasz Sojka Sojka; Elzbieta Beres-Pawlik; Krzysztof Anders; Ryszard Piramidowicz; Zhuoqi Tang; David Furniss; Emma Barney; Trevor Benson; Angela Seddon. Experimental and numerical investigation to rationalize both near-infrared and mid-infrared spontaneous emission in Pr3+ doped selenide-chalcogenide fiber. Journal of Luminescence 2019, 209, 14 -20.

AMA Style

Slawomir Sujecki, Lukasz Sojka Sojka, Elzbieta Beres-Pawlik, Krzysztof Anders, Ryszard Piramidowicz, Zhuoqi Tang, David Furniss, Emma Barney, Trevor Benson, Angela Seddon. Experimental and numerical investigation to rationalize both near-infrared and mid-infrared spontaneous emission in Pr3+ doped selenide-chalcogenide fiber. Journal of Luminescence. 2019; 209 ():14-20.

Chicago/Turabian Style

Slawomir Sujecki; Lukasz Sojka Sojka; Elzbieta Beres-Pawlik; Krzysztof Anders; Ryszard Piramidowicz; Zhuoqi Tang; David Furniss; Emma Barney; Trevor Benson; Angela Seddon. 2019. "Experimental and numerical investigation to rationalize both near-infrared and mid-infrared spontaneous emission in Pr3+ doped selenide-chalcogenide fiber." Journal of Luminescence 209, no. : 14-20.

Letter
Published: 05 December 2018 in Laser Physics Letters
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In this letter, we propose a single fiber-based sensor setup allowing for simultaneous excitation and detection of multiphoton fluorescence. Presented sensor's key element is the negative curvature hollow core fiber (NCHCF) with three transmission bands in the visible spectral range (414–423 nm, 510–552 nm and 680–784 nm), allowing for nearly dispersion-free guidance of 160 fs-long laser pulses at 730 nm photon wavelength. Total temporal broadening of a laser pulse propagating in the proposed sensor setup is only (7 ± 1) fs. The NCHCF output beam was additionally focused with a microlensed, multimode fiber tip, increasing the efficiency of multiphoton absorption. The usefulness of the sensor for the multiphoton spectroscopy experiments is tested on the solutions of fluorescein and flavin adenine dinucleotide. This optical fiber sensor combines simplicity, minimal size, and good optical properties, and can be found an interesing solution for the non-linear optical methods used in chemistry, biology and medicine.

ACS Style

Maciej Andrzej Popenda; Hanna Izabela Stawska; Marcin Syperek; Alexey F Kosolapov; Anton N Kolyadin; Elżbieta Bereś-Pawlik. Multiphoton fluorescence excitation and detection with a single negative curvature hollow core fibre. Laser Physics Letters 2018, 16, 015103 .

AMA Style

Maciej Andrzej Popenda, Hanna Izabela Stawska, Marcin Syperek, Alexey F Kosolapov, Anton N Kolyadin, Elżbieta Bereś-Pawlik. Multiphoton fluorescence excitation and detection with a single negative curvature hollow core fibre. Laser Physics Letters. 2018; 16 (1):015103.

Chicago/Turabian Style

Maciej Andrzej Popenda; Hanna Izabela Stawska; Marcin Syperek; Alexey F Kosolapov; Anton N Kolyadin; Elżbieta Bereś-Pawlik. 2018. "Multiphoton fluorescence excitation and detection with a single negative curvature hollow core fibre." Laser Physics Letters 16, no. 1: 015103.

Journal article
Published: 11 October 2018 in Fibers
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The presence of fiber optic devices, such as couplers or wavelength division multiplexers, based on hollow-core fibers (HCFs) is still rather uncommon, while such devices can be imagined to greatly increase the potential of HCFs for different applications, such as sensing, nonlinear optics, etc. In this paper, we present a combination of a standard, multimode fiber (MMF) optic coupler with a hollow core photonic bandgap fiber through arc fusion splicing and its application for the purpose of multiphoton spectroscopy. The presented splicing method is of high affordability due to the low cost of arc fusion splicers, and the measured splicing loss (SL) of the HCF-MMF splice is as low as (0.32 ± 0.1) dB, while the splice itself is durable enough to withstand a bending radius (rbend) of 1.8 cm. This resulted in a hybrid between the hollow core photonic bandgap fiber (HCPBF) and MMF coupler, delivering 20 mW of average power and 250-fs short laser pulses to the sample, which was good enough to test the proposed sensor setup in a simple, proof-of-concept multiphoton fluorescence excitation-detection experiment, allowing the successful measurement of the fluorescence emission spectrum of 10−5 M fluorescein solution. In our opinion, the presented results indicate the possibility of creating multi-purpose HCF setups, which would excel in various types of sensing applications.

ACS Style

Hanna Izabela Stawska; Maciej Andrzej Popenda; Elżbieta Bereś-Pawlik. Combining Hollow Core Photonic Crystal Fibers with Multimode, Solid Core Fiber Couplers through Arc Fusion Splicing for the Miniaturization of Nonlinear Spectroscopy Sensing Devices. Fibers 2018, 6, 77 .

AMA Style

Hanna Izabela Stawska, Maciej Andrzej Popenda, Elżbieta Bereś-Pawlik. Combining Hollow Core Photonic Crystal Fibers with Multimode, Solid Core Fiber Couplers through Arc Fusion Splicing for the Miniaturization of Nonlinear Spectroscopy Sensing Devices. Fibers. 2018; 6 (4):77.

Chicago/Turabian Style

Hanna Izabela Stawska; Maciej Andrzej Popenda; Elżbieta Bereś-Pawlik. 2018. "Combining Hollow Core Photonic Crystal Fibers with Multimode, Solid Core Fiber Couplers through Arc Fusion Splicing for the Miniaturization of Nonlinear Spectroscopy Sensing Devices." Fibers 6, no. 4: 77.

Journal article
Published: 10 August 2018 in Polymers
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In this paper, we present numerical studies of several different structures of anti-resonant, hollow core optical fibers. The cladding of these fibers is based on the Kagomé lattice concept, with some of the core-surrounding lattice cells removed. This modification, by creating additional, glass-free regions around the core, results in a significant improvement of some important optical fiber parameters, such as confinement loss (CL), bending loss (BL), and dispersion parameter (D). According to the conducted simulations (with fused silica glass being the structure’s material), CL were reduced from ~0.36 dB/m to ~0.16 dB/m (at 760 nm wavelength) in case of the structure with removed cells, and did not exceed the value of 1 dB/m across the 700–850 nm wavelength range. Additionally, proposed structure exhibits a remarkably low value of D—from 1.5 to 2.5 ps/(nm × km) at the 700–800 nm wavelength range, while the BL were estimated to be below 0.25 dB/m for bending radius of ~1.5 cm. CL and D were simulated, additionally, for structures made of acrylic glass polymethylmethacrylate, (PMMA), with similarly good results—DPMMA ∊ [2, 4] ps/(nm × km) and CLPMMA ≈ 0.13 dB/m (down from 0.41 dB/m), for the same spectral regions (700–800 nm bandwidth for D, and 760 nm wavelength for CL).

ACS Style

Hanna Izabela Stawska; Maciej Andrzej Popenda; Elżbieta Bereś-Pawlik. Anti-Resonant Hollow Core Fibers with Modified Shape of the Core for the Better Optical Performance in the Visible Spectral Region—A Numerical Study. Polymers 2018, 10, 899 .

AMA Style

Hanna Izabela Stawska, Maciej Andrzej Popenda, Elżbieta Bereś-Pawlik. Anti-Resonant Hollow Core Fibers with Modified Shape of the Core for the Better Optical Performance in the Visible Spectral Region—A Numerical Study. Polymers. 2018; 10 (8):899.

Chicago/Turabian Style

Hanna Izabela Stawska; Maciej Andrzej Popenda; Elżbieta Bereś-Pawlik. 2018. "Anti-Resonant Hollow Core Fibers with Modified Shape of the Core for the Better Optical Performance in the Visible Spectral Region—A Numerical Study." Polymers 10, no. 8: 899.

Conference paper
Published: 01 July 2018 in 2018 20th International Conference on Transparent Optical Networks (ICTON)
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In this paper an ultrathin lensed fiber-optics probe for multiphoton fluorescence endoscopy is presented. The probe is made by attaching a segment of multimode (MM) fiber to the distal end of the hollow core, photonic bandgap fiber (HCPBF) and generating a curved surface at the tip of the MM fiber using a fiber arc fusion splicer the electric arc of a fusion splicer. The curved surface served as a micro fiber-optic lens and focused the exiting light beam. It simultaneously protected the HCF tip against contamination.

ACS Style

Hanna Stawska; Maciej Popenda; Lukasz Langer; Elzbieta Beres Pawlik. Application of the Hollow Core Fiber Ended with Fiber Microlens in the Multiphoton Excitation Setup. 2018 20th International Conference on Transparent Optical Networks (ICTON) 2018, 1 -4.

AMA Style

Hanna Stawska, Maciej Popenda, Lukasz Langer, Elzbieta Beres Pawlik. Application of the Hollow Core Fiber Ended with Fiber Microlens in the Multiphoton Excitation Setup. 2018 20th International Conference on Transparent Optical Networks (ICTON). 2018; ():1-4.

Chicago/Turabian Style

Hanna Stawska; Maciej Popenda; Lukasz Langer; Elzbieta Beres Pawlik. 2018. "Application of the Hollow Core Fiber Ended with Fiber Microlens in the Multiphoton Excitation Setup." 2018 20th International Conference on Transparent Optical Networks (ICTON) , no. : 1-4.

Journal article
Published: 02 May 2018 in IEEE Photonics Technology Letters
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Efficient continuous-wave laser operation at 2.982 μm is achieved with a Dy3:fluoride fiber pumped using an inhouse-built 1.1 μm ytterbium (III) fiber laser. The laser output power reached is 554 mW, with a maximum slope efficiency of 18% with respect to the launched pump power. Additionally, the measured spontaneous luminescence within the visible wavelength range, under 1.1 μm pumping, is presented and attributed to excited state absorption (ESA). The influence of the ESA on the laser performance is discussed. The results confirm that high output powers from Dy: fluoride fiber laser pumped at 1.1 μm are possible.

ACS Style

Lukasz Sojka; Lukasz Pajewski; Maciej Popenda; Elzbieta Beres-Pawlik; Samir Lamrini; Konrad Markowski; Tomasz Osuch; Trevor M. Benson; Angela Seddon; Slawomir Sujecki. Experimental Investigation of Mid-Infrared Laser Action From Dy3+ Doped Fluorozirconate Fiber. IEEE Photonics Technology Letters 2018, 30, 1083 -1086.

AMA Style

Lukasz Sojka, Lukasz Pajewski, Maciej Popenda, Elzbieta Beres-Pawlik, Samir Lamrini, Konrad Markowski, Tomasz Osuch, Trevor M. Benson, Angela Seddon, Slawomir Sujecki. Experimental Investigation of Mid-Infrared Laser Action From Dy3+ Doped Fluorozirconate Fiber. IEEE Photonics Technology Letters. 2018; 30 (12):1083-1086.

Chicago/Turabian Style

Lukasz Sojka; Lukasz Pajewski; Maciej Popenda; Elzbieta Beres-Pawlik; Samir Lamrini; Konrad Markowski; Tomasz Osuch; Trevor M. Benson; Angela Seddon; Slawomir Sujecki. 2018. "Experimental Investigation of Mid-Infrared Laser Action From Dy3+ Doped Fluorozirconate Fiber." IEEE Photonics Technology Letters 30, no. 12: 1083-1086.

Communication
Published: 06 October 2017 in Sensors
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In this paper, an application of negative curvature hollow core fiber (NCHCF) in an all-fiber, multiphoton fluorescence sensor setup is presented. The dispersion parameter (D) of this fiber does not exceed the value of 5 ps/nm × km across the optical spectrum of (680–750) nm, making it well suited for the purpose of multiphoton excitation of biological fluorophores. Employing 1.5 m of this fiber in a simple, all-fiber sensor setup allows us to perform multiphoton experiments without any dispersion compensation methods. Multiphoton excitation of nicotinamide adenine dinucleotide (NADH) and flavin adenine dinucleotide (FAD) with this fiber shows a 6- and 9-fold increase, respectively, in the total fluorescence signal collected when compared with the commercial solution in the form of a hollow-core photonic band gap fiber (HCPBF). To the author’s best knowledge, this is the first time an NCHCF was used in an optical-fiber sensor setup for multiphoton fluorescence experiments.

ACS Style

Maciej Andrzej Popenda; Hanna Izabela Stawska; Leszek Mateusz Mazur; Konrad Jakubowski; Alexey Kosolapov; Anton Kolyadin; Elżbieta Bereś-Pawlik. Application of Negative Curvature Hollow-Core Fiber in an Optical Fiber Sensor Setup for Multiphoton Spectroscopy. Sensors 2017, 17, 2278 .

AMA Style

Maciej Andrzej Popenda, Hanna Izabela Stawska, Leszek Mateusz Mazur, Konrad Jakubowski, Alexey Kosolapov, Anton Kolyadin, Elżbieta Bereś-Pawlik. Application of Negative Curvature Hollow-Core Fiber in an Optical Fiber Sensor Setup for Multiphoton Spectroscopy. Sensors. 2017; 17 (10):2278.

Chicago/Turabian Style

Maciej Andrzej Popenda; Hanna Izabela Stawska; Leszek Mateusz Mazur; Konrad Jakubowski; Alexey Kosolapov; Anton Kolyadin; Elżbieta Bereś-Pawlik. 2017. "Application of Negative Curvature Hollow-Core Fiber in an Optical Fiber Sensor Setup for Multiphoton Spectroscopy." Sensors 17, no. 10: 2278.

Proceedings article
Published: 10 February 2017 in Optical Fibers and Their Applications 2017
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In this paper, we present the project and usage of multiphoton fluorescence spectroscopy sensor, based on the photonic crystal fiber as an excitation pulse transmission medium and four POF fibers acting as an emission collection elements. Usage of the photonic crystal fiber as a transmission medium allowed us to transmit the 780 nm excitation pulse with total time spread as low as 65 fs, which resulted in pulse broadening from the base 127 fs to 192 fs. Pulse was focused onto the sample via the GRIN lens, which resulted in an observable fluorescence. Collection tips of the POF fibers were additionally angled to move the collection cones towards the GRIN lens focal point, which resulted in further increase of the collection efficiency. This allowed to create a sensor capable of measuring fluorescence emission of the fluorescein solution with concentration as low as 10-4 M, with very low amount of bulk optics between the sensor and the spectrometer. © (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

ACS Style

Maciej Popenda; Hanna Stawska; Elżbieta Bereś-Pawlik. Multiphoton fluorescence spectroscopy optical fiber sensor. Optical Fibers and Their Applications 2017 2017, 10325, 103250 .

AMA Style

Maciej Popenda, Hanna Stawska, Elżbieta Bereś-Pawlik. Multiphoton fluorescence spectroscopy optical fiber sensor. Optical Fibers and Their Applications 2017. 2017; 10325 ():103250.

Chicago/Turabian Style

Maciej Popenda; Hanna Stawska; Elżbieta Bereś-Pawlik. 2017. "Multiphoton fluorescence spectroscopy optical fiber sensor." Optical Fibers and Their Applications 2017 10325, no. : 103250.

Proceedings article
Published: 08 December 2016 in Laser Technology 2016: Progress and Applications of Lasers
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This paper presents investigation of normal and cancerous tissue by the means of one and two photon fluorescence spectroscopy. A comparison those methods has been conducted, allowing for eventual determination of granting the best possible diagnostic results.

ACS Style

Elżbieta Bereś-Pawlik; Hanna Stawska; Maciej Popenda; Łukasz Pajewski; Natalia Malinowska; Robert Hossa. Multiphoton, optical fiber-based fluorescence spectroscopy. Laser Technology 2016: Progress and Applications of Lasers 2016, 10159, 1015913 .

AMA Style

Elżbieta Bereś-Pawlik, Hanna Stawska, Maciej Popenda, Łukasz Pajewski, Natalia Malinowska, Robert Hossa. Multiphoton, optical fiber-based fluorescence spectroscopy. Laser Technology 2016: Progress and Applications of Lasers. 2016; 10159 ():1015913.

Chicago/Turabian Style

Elżbieta Bereś-Pawlik; Hanna Stawska; Maciej Popenda; Łukasz Pajewski; Natalia Malinowska; Robert Hossa. 2016. "Multiphoton, optical fiber-based fluorescence spectroscopy." Laser Technology 2016: Progress and Applications of Lasers 10159, no. : 1015913.

Journal article
Published: 30 June 2014 in Photonics Letters of Poland
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ACS Style

Elzbieta Maria Beres-Pawlik; Hanna Stawska; Mariusz Sliwa; Wojciech Sokol; Zbigniew Kulas; Lukasz Klonowski; Maciej Popenda; Marcin Kochanowicz; Jacek Zmojda; Dominik Dorosz. Fiber fluorescent spectroscopy. Photonics Letters of Poland 2014, 6, 1 .

AMA Style

Elzbieta Maria Beres-Pawlik, Hanna Stawska, Mariusz Sliwa, Wojciech Sokol, Zbigniew Kulas, Lukasz Klonowski, Maciej Popenda, Marcin Kochanowicz, Jacek Zmojda, Dominik Dorosz. Fiber fluorescent spectroscopy. Photonics Letters of Poland. 2014; 6 (2):1.

Chicago/Turabian Style

Elzbieta Maria Beres-Pawlik; Hanna Stawska; Mariusz Sliwa; Wojciech Sokol; Zbigniew Kulas; Lukasz Klonowski; Maciej Popenda; Marcin Kochanowicz; Jacek Zmojda; Dominik Dorosz. 2014. "Fiber fluorescent spectroscopy." Photonics Letters of Poland 6, no. 2: 1.

Conference paper
Published: 01 June 2013 in 2013 15th International Conference on Transparent Optical Networks (ICTON)
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This work's purpose is to present a non-invasive optical method of diagnosing cancerous and otherwise pathological tissues. The optical method and devices proposed in this paper can compete with alternative methods presently employed, in that - among other things - they are non-invasive (therefore completely safe to the patient) and they are very sensitive. There is no need to take tissue samples for these methods and devices as they can be performed in vivo. The methods presented in this paper are referred to as those involving fluorescence spectroscopy.

ACS Style

Elzbieta Beres-Pawlik; Hanna Stawska; Lukasz Klonowski. Detecting cancerous tissues in human body by means of fiber fluorescent spectroscopy. 2013 15th International Conference on Transparent Optical Networks (ICTON) 2013, 1 -5.

AMA Style

Elzbieta Beres-Pawlik, Hanna Stawska, Lukasz Klonowski. Detecting cancerous tissues in human body by means of fiber fluorescent spectroscopy. 2013 15th International Conference on Transparent Optical Networks (ICTON). 2013; ():1-5.

Chicago/Turabian Style

Elzbieta Beres-Pawlik; Hanna Stawska; Lukasz Klonowski. 2013. "Detecting cancerous tissues in human body by means of fiber fluorescent spectroscopy." 2013 15th International Conference on Transparent Optical Networks (ICTON) , no. : 1-5.

Conference paper
Published: 17 October 2012 in OFS2012 22nd International Conference on Optical Fiber Sensor
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The major challenges in developing a fiber-optic nonlinear endomicroscope are efficient excitation light delivery and nonlinear optical signals collection, beam scanning, and probe miniaturization [1-4]. Therefore, double-clad PCFs (DCPCF) are used in nonlinear endomicroscope which can play a dual role of ultrashort pulse delivery and efficient collection of nonlinear optical signals [4]. However, due to dispersion of DCPCF, dispersion compensation systems are required. In this paper the dispersion properties and losses of new design of double-clad hollow-core photonic bandgap fibers (DCPBGFs) based on a circular lattice are investigated for the first time, by using a finite difference time domain method.

ACS Style

Hanna Stawska; Elżbieta Bereś-Pawlik. Dispersion properties of double-clad hollow-core photonic bandgap fibers based on a circular lattice cladding. OFS2012 22nd International Conference on Optical Fiber Sensor 2012, 8421, 84217F .

AMA Style

Hanna Stawska, Elżbieta Bereś-Pawlik. Dispersion properties of double-clad hollow-core photonic bandgap fibers based on a circular lattice cladding. OFS2012 22nd International Conference on Optical Fiber Sensor. 2012; 8421 ():84217F.

Chicago/Turabian Style

Hanna Stawska; Elżbieta Bereś-Pawlik. 2012. "Dispersion properties of double-clad hollow-core photonic bandgap fibers based on a circular lattice cladding." OFS2012 22nd International Conference on Optical Fiber Sensor 8421, no. : 84217F.