Mr. Lukasz Chorchos Profile

Lukasz Chorchos

Doctoral Candidate at Warsaw Univ of Technology

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Author

Publications (26)

Proceedings Article | 17 March 2023 Presentation

100Gb/s short wavelength VCSELs applying a multi-aperture approach

Lukasz Chorchos, Nikolay Ledentsov, Oleg Makarov, Vitaly Shchukin, Nikolai Ledentsov, Joerg-R. Kropp, Jaroslaw Turkiewicz

Proceedings Volume PC12439, PC1243904 (2023) https://doi.org/10.1117/12.2650389

KEYWORDS: Vertical cavity surface emitting lasers, Resistance, Patents, Near field optics, Near field, Multimode fibers, Fiber lasers, Data transmission

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Proceedings Article | 3 March 2022 Presentation + Paper

1300-nm wafer-fused VCSELs with InGaAs/InAlGaAs superlattice-based active region

Sergey Blokhin, Nikolay Ledentsov, Stanislav Rochas, Andrey Babichev, Andrey Gladyshev, Łukasz Chorchos, Oleg Yu. Makarov, Leonid Ya. Karachinsky, Innokenty Novikov, Alexey Blokhin, Mikhail Bobrov, Nikolay Maleev, Vladislav Andryushkin, Kirill Voropaev, Irina Zhumaeva, Victor Ustinov, Anton Yu. Egorov

Proceedings Volume 12020, 120200K (2022) https://doi.org/10.1117/12.2605451

KEYWORDS: Vertical cavity surface emitting lasers, Modulation, Quantum wells, Internal quantum efficiency, Absorption, Mirrors, Epitaxy, Transparency, Single mode fibers, Semiconducting wafers

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Proceedings Article | 3 March 2022 Presentation + Paper

Advances in design and application of compact VCSEL arrays: from multicore fiber to optical wireless and beyond

N. Ledentsov, L. Chorchos, O. Yu. Makarov, M. Bou Sanayeh, J.-R. Kropp, I. Titkov, V. Shchukin, V. Kalosha, J. Turkiewicz

Proceedings Volume 12020, 1202008 (2022) https://doi.org/10.1117/12.2607878

KEYWORDS: Vertical cavity surface emitting lasers, Data transmission, Multimode fibers, Modulation, Receivers, Oxides, Optical interconnects, Fiber couplers, Signal generators

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Proceedings Article | 1 August 2021 Presentation + Paper

Frequency characteristics of the polarization self‐modulation in oxide-confined vertical-cavity surface-emitting lasers

N. Ledentsov, L. Chorchos, O. Yu. Makarov, M. Bou Sanayeh, J.-R. Kropp, V. Shchukin, V. Kalosha, J. Turkiewicz

Proceedings Volume 11805, 118050X (2021) https://doi.org/10.1117/12.2593195

KEYWORDS: Vertical cavity surface emitting lasers, Near field optics, Polarization, Birefringence, Near field, Switching, Modulation, Reflection, Receivers, Antireflective coatings

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Proceedings Article | 5 March 2021 Presentation + Paper

Narrow spectrum VCSEL development for high performance 100G transceivers and increased transmission distance over multimode fiber

N. Ledentsov, L. Chorchos, O. Makarov, J.-R. Kropp, V. Shchukin, V. Kalosha, J. Turkiewicz

Proceedings Volume 11704, 117040P (2021) https://doi.org/10.1117/12.2578216

KEYWORDS: Vertical cavity surface emitting lasers, Multimode fibers, Transceivers, Data processing, Receivers, Interfaces, Electronics

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Proceedings Article | 5 March 2021 Presentation + Paper

NRZ, DB, and DMT performance for short-reach VCSEL-based optical interconnects

Lukasz Chorchos, Nikolay Ledentsov, Oleg Makarov, Philipp Scholz, Urs Hecht, Christoph Kottke, Volker Jungnickel, Ronald Freund, Vitaly Shchukin, Vladimir Kalosha, Jarosław Turkiewicz, Friedel Gerfers

Proceedings Volume 11692, 116920D (2021) https://doi.org/10.1117/12.2578553

KEYWORDS: Optical interconnects, Modulation, Wavelength division multiplexing, Transmitters, Signal to noise ratio, Shortwaves, Vertical cavity surface emitting lasers, Receivers, Binary data

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Proceedings Article | 24 February 2020 Presentation + Paper

Quantum-dot oxide-confined 850-nm VCSELs with extreme temperature stability operating at 25 Gbit/s up to 180deg C

N. Ledentsov, L. Chorchos, O. Makarov, J.-R. Kropp, V. A. Shchukin, V. P. Kalosha, J. P. Turkiewicz, N. Cherkashin, N. N. Ledentsov

Proceedings Volume 11300, 113000H (2020) https://doi.org/10.1117/12.2543244

KEYWORDS: Vertical cavity surface emitting lasers, Quantum wells, Temperature metrology, Data transmission, Semiconducting wafers, Oxides, Resistance, Eye, Pulsed laser operation, Multimode fibers

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Proceedings Article | 24 February 2020 Paper

Oxidation stress induced birefringence in vertical cavity surface emitting lasers

N. Ledentsov, L. Chorchos, O. Makarov, J. -R. Kropp, V. Shchukin, V. P. Kalosha, Urs Hecht, P. Kurth, F. Gerfers, J. P. Turkiewicz, N. N. Ledentsov

Proceedings Volume 11300, 113000K (2020) https://doi.org/10.1117/12.2542972

KEYWORDS: Vertical cavity surface emitting lasers, Polarization, Birefringence, Near field optics, Switching, Near field, Multimode fibers, Data transmission, Receivers, Modulation

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Proceedings Article | 24 February 2020 Presentation + Paper

Wavelength-stabilized near-field laser

V. A. Shchukin, V. P. Kalosha, N. Ledentsov, Ł. Chorchos, N. N. Ledentsov

Proceedings Volume 11301, 113011I (2020) https://doi.org/10.1117/12.2545235

KEYWORDS: Vertical cavity surface emitting lasers, Near field optics, Refractive index, Semiconductors, Dielectrics, Semiconducting wafers, Quantum wells, Reflectivity, Data transmission

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Surface–trapped electromagnetic waves can be localized at a boundary between a semiconductor distributed Bragg reflector (DBR) and a homogeneous dielectric medium or air. These waves enable a novel class of both in–plane–emitting and vertically–emitting optical devices including edge–emitting lasers, disk microlasers, near–field fiber–coupled lasers as well as vertical cavity surface emitting lasers (VCSELs). We show that the surface–trapped modes can be controlled by tuning the thickness of a single DBR layer. Diagrams in variables “wavelength – thickness of the control layer” are constructed for both TM and TE optical modes revealing the parameter domains, in which surface–trapped modes exist. The domains contain cusps, in the vicinity of which surface–trapped modes are allowed only in a narrow spectral region, enabling wavelength–stabilized operation of a laser. For an edge–emitting structure designed for lasing at ~1 μm, the lasing wavelength shifts upon temperature at a rate ~0.07 nm/K. The fraction of the optical power of the surface–trapped mode accumulated in the air can reach ~60%. In oxide–confined VCSEL structures the surface–trapped mode can be used for engineering of the interaction with the VCSEL lasing modes. Deposition of an effective (3λ/4)–thick additional layer on top of the top DBR of the VCSEL allows surface–trapped modes to reach the wavelength of the VCSEL lasing modes. Interaction of these two types of generally non–orthogonal optical modes results in the lateral leakage of the VCSEL emission. Mapping of the VCSEL wafers in areas with the variable aperture diameters D shows non–monotonous behavior of side mode suppression ratio (SMRS) versus D oscillating in the range from 7 dB to ~30 dB with three clearly revealed maxima in the SMSR at particular aperture diameters varied in the range from ~3 μm to ~5 μm. Similar oscillatory behavior was previously predicted for a different type of leaky VCSELs. VCSELs with SMSR above 20 dB are tested for data transmission over a multimode fiber (MMF). 40Gb/s open eye data transmission over 1.4 km OM5 MMF without pre–emphasis or equalization is demonstrated is such device.

Proceedings Article | 1 March 2019 Presentation + Paper

Energy efficient 850-nm VCSEL based optical transmitter and receiver link capable of 56 Gbit/s NRZ operation

N. Ledentsov Jr., M. Agustin, L. Chorchos, J.-R. Kropp, V. Shchukin, V. Kalosha, M. Koepp, C. Caspar, J. Turkiewicz, N. Ledentsov

Proceedings Volume 10938, 109380J (2019) https://doi.org/10.1117/12.2509916

KEYWORDS: Vertical cavity surface emitting lasers, Receivers, Modulation, Transmitters, Optical fabrication, Oscilloscopes, Optical fabrication equipment, Energy efficiency, Connectors

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Proceedings Article | 1 February 2019 Presentation + Paper

PAM-6 generation using 32-QAM constellation

L. Chorchos

Proceedings Volume 10946, 109460N (2019) https://doi.org/10.1117/12.2509732

KEYWORDS: Modulation, Vertical cavity surface emitting lasers, Digital signal processing, Eye, Signal to noise ratio, Receivers, Forward error correction, Modulators, Data transmission, Filtering (signal processing)

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Proceedings Article | 1 February 2019 Paper

Compensation of modulators nonlinearities for higher order modulation formats

L. Chorchos

Proceedings Volume 10946, 109460L (2019) https://doi.org/10.1117/12.2509809

KEYWORDS: Modulation, Modulators, Signal to noise ratio, Analog electronics, Refractive index, Signal attenuation, Phase shift keying, Nonlinear optics

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Proceedings Article | 1 October 2018 Paper

Data transmission with 1.3um VCSEL

Łukasz Chorchos

Proceedings Volume 10808, 1080819 (2018) https://doi.org/10.1117/12.2501673

KEYWORDS: Vertical cavity surface emitting lasers, Data transmission, Modulation, Eye, Forward error correction, Amplifiers, Standards development, Single mode fibers, Fiber lasers, Signal attenuation

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Proceedings Article | 7 August 2017 Paper

High speed data transmission with a modal filter

L. Chorchos, G. Stepniak, J. Turkiewicz, L. Szostkiewicz, M. Napierala, L. Ostrowski, B. Bienkowska, T. Nasilowski, J. Kropp, N. Ledentsov, V. Shchukin

Proceedings Volume 10445, 1044516 (2017) https://doi.org/10.1117/12.2281038

KEYWORDS: Vertical cavity surface emitting lasers, Optical filters, Eye, Multimode fibers, Data transmission, Signal attenuation, Electronic filtering, Fiber lasers, Manufacturing, Signal processing

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Proceedings Article | 7 August 2017 Paper

SSMF 1310nm dispersion characteristic influence on the 400 Gbit/s and 1000 Gbit/s ethernet physical layer design

Jarosław Turkiewicz, Łukasz Chorchos

Proceedings Volume 10445, 104450E (2017) https://doi.org/10.1117/12.2280839

KEYWORDS: Optical design, Optical communications, Four wave mixing, Dispersion, Wavelength division multiplexing, Receivers, Transmitters, Signal attenuation, Tolerancing, Modulation, Telecommunications, Manufacturing

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SPIE Journal Paper | 4 April 2017

Experimental performance of semiconductor optical amplifiers and praseodymium-doped fiber amplifiers in 1310-nm dense wavelength division multiplexing system

Lukasz Chorchos, Jarosław Turkiewicz

OE, Vol. 56, Issue 04, 046101, (April 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.4.046101

KEYWORDS: Dense wavelength division multiplexing, Receivers, Optical amplifiers, Fiber amplifiers, Semiconductor optical amplifiers, Optical engineering, Semiconductors, Neodymium, Transmittance, Data centers

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Proceedings Article | 25 February 2017 Paper

Continuous wave and modulation performance of 1550nm band wafer-fused VCSELs with MBE-grown InP-based active region and GaAs-based DBRs

A. Babichev, L. Ya. Karachinsky, I. Novikov, A. Gladyshev, S. Mikhailov, V. Iakovlev, A. Sirbu, G. Stepniak, L. Chorchos, J. Turkiewicz, M. Agustin, N. Ledentsov, K. Voropaev, A. Ionov, A. Yu. Egorov

Proceedings Volume 10122, 1012208 (2017) https://doi.org/10.1117/12.2250842

KEYWORDS: Vertical cavity surface emitting lasers, Modulation, Continuous wave operation, Fiber to the x, Quantum wells, Eye, Wafer-level optics, Gallium, Photodetectors, Aluminum

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Proceedings Article | 10 February 2017 Paper

High speed data transmission over multimode fiber based on single mode 850 nm leaky VCSELs

N. Ledentsov, L. Chorchos, J. Turkiewicz

Proceedings Volume 10325, 103250M (2017) https://doi.org/10.1117/12.2270946

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Proceedings Article | 10 February 2017 Paper

High speed 850 nm single mode and multi mode VCSEL transmission over multimode fiber

Łukasz Chorchos, Jarosław Turkiewicz, J. Kropp, N. Ledentsov, V. Shchukin, M. Agustin

Proceedings Volume 10325, 103250T (2017) https://doi.org/10.1117/12.2271043

KEYWORDS: Vertical cavity surface emitting lasers, Multimode fibers, Optical fibers

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Proceedings Article | 10 February 2017 Paper

Relative intensity noise of single- and multi-mode 850 nm vertical-cavity surface-emitting lasers

Łukasz Chorchos, Jarosław Turkiewicz, J. Kropp, N. Ledentsov, V. Shchukin, M. Agustin

Proceedings Volume 10325, 103250J (2017) https://doi.org/10.1117/12.2271089

KEYWORDS: Vertical cavity surface emitting lasers

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Proceedings Article | 28 September 2016 Paper

On high speed transmission with the 850nm VCSELs

Jarosław Turkiewicz, Łukasz Chorchos, Rafael Puerta Ramirez, Juan Jose Vegas Olmos, Nikolay Ledentsov

Proceedings Volume 10031, 100311B (2016) https://doi.org/10.1117/12.2249334

KEYWORDS: Vertical cavity surface emitting lasers, Optical communications, Modulation, Transmitters, Multimode fibers, Switching, Energy efficiency, Data centers, Data communications, Power supplies

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Proceedings Article | 28 September 2016 Paper

Performance comparison of the 1310nm optical amplifiers

Łukasz Chorchos, Jarosław Turkiewicz

Proceedings Volume 10031, 100311C (2016) https://doi.org/10.1117/12.2249337

KEYWORDS: Optical amplifiers, Dense wavelength division multiplexing, Telecommunications, Receivers, Fiber amplifiers, Transmittance, Semiconductor optical amplifiers, Signal processing, Praseodymium, Data transmission

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Proceedings Article | 28 September 2016 Paper

Reconfigurable remote access unit for W-band radio-over-fiber transmission

Łukasz Chorchos, Simon Rommel, Jarosław Turkiewicz, Juan Jose Vegas Olmos

Proceedings Volume 10031, 100311D (2016) https://doi.org/10.1117/12.2249350

KEYWORDS: Radio optics, Hybrid fiber radio, Dense wavelength division multiplexing, Oscillators, Channel projecting optics, Photodiodes, Heterodyning, Optical networks, Polarization, Tunable filters

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Proceedings Article | 28 September 2016 Paper

RIN measurements of the 850nm VCSELs

Łukasz Chorchos, Jarosław Turkiewicz

Proceedings Volume 10031, 100311E (2016) https://doi.org/10.1117/12.2249366

KEYWORDS: Vertical cavity surface emitting lasers, Spectrum analysis, Signal to noise ratio, Amplifiers, Oscilloscopes, Photodiodes, Interference (communication), Laser applications, Photons, Telecommunications

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Proceedings Article | 11 September 2015 Paper

High order modulation of 850nm VCSELs

Mikel Agustin, Lukasz Chorchos, Jarosław Turkiewicz

Proceedings Volume 9662, 96620U (2015) https://doi.org/10.1117/12.2205733

KEYWORDS: Vertical cavity surface emitting lasers, Modulation, Eye, Cameras, Imaging systems, Microscopes, Static characterization, Forward error correction, Data corrections, Clocks

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Proceedings Article | 11 September 2015 Paper

Cost-effective tunable 1310nm DWDM transmitter

Łukasz Chorchos, Jarosław Turkiewicz

Proceedings Volume 9662, 96620P (2015) https://doi.org/10.1117/12.2205587

KEYWORDS: Dense wavelength division multiplexing, Transmitters, Temperature metrology, Tunable lasers, Laser beam characterization, Networks, Single mode fibers, Data transmission, Signal attenuation, Dispersion

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Showing 5 of 26 publications

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