Dr. Gunter Larisch Profile

Dr. Gunter Larisch

at TRUMPF Photonic Components GmbH

SPIE Involvement:

Author

Proceedings Article | 13 March 2024 Presentation + Paper

Recent advancement in pushing the VCSEL RIN towards the shot-noise limit for single-channel data rates of 100 Gb/s and beyond

Bedouin Sassiya, Philip Moser, Gunter Larisch, Sven Bader, Marwan Bou Sanayeh, Tobias Kischkat-Grimm, Wolfgang Schwarz, Hans Spruit, Jochen Hellmig, Roman Koerner

Proceedings Volume 12904, 1290402 (2024) https://doi.org/10.1117/12.3002582

KEYWORDS: Optical gratings, Design, Polarization gratings, Modulation, Polarization, Photodiodes, Polarizers, Vertical cavity surface emitting lasers, Data communications, Relative intensity noise

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Proceedings Article | 9 April 2019 Paper

Nanophotonics for a green internet

Dieter Bimberg, Gunter Larisch

Proceedings Volume 10922, 109220B (2019) https://doi.org/10.1117/12.2506015

KEYWORDS: Multimode fibers, Internet, Energy efficiency, Optical amplifiers, Receivers, Data transmission, Vertical cavity surface emitting lasers, Nanophotonics, Data centers, Standards development

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Proceedings Article | 19 February 2018 Paper

Simplicity VCSELs

Nasibeh Haghighi, Ricardo Rosales, Gunter Larisch, Marcin Gębski, Leszek Frasunkiewicz, Tomasz Czyszanowski, James Lott

Proceedings Volume 10552, 105520N (2018) https://doi.org/10.1117/12.2295028

KEYWORDS: Quantum wells, External quantum efficiency, Modulation, Quantum efficiency, Vertical cavity surface emitting lasers, Semiconducting wafers

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Proceedings Article | 4 March 2015 Paper

Maximizing the temperature insensitivity, energy efficiency, and bit rate of 980-nm VCSELs via small oxide-aperture diameters and photon lifetime tuning

Philip Moser, Maya Volwahsen, Gunter Larisch, James Lott, Dieter Bimberg

Proceedings Volume 9381, 93810T (2015) https://doi.org/10.1117/12.2077771

KEYWORDS: Oxides, Internet, Energy efficiency, Modulation, Integrated circuits, Picosecond phenomena, Vertical cavity surface emitting lasers, Data centers, Optical interconnects, Temperature metrology

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Proceedings Article | 4 March 2015 Paper

Extraction and analysis of high-frequency response and impedance of 980-nm VCSELs as a function of temperature and oxide aperture diameter

Philip Wolf, Hui Li, Philip Moser, Gunter Larisch, James Lott, Dieter Bimberg

Proceedings Volume 9381, 93810H (2015) https://doi.org/10.1117/12.2077182

KEYWORDS: Oxides, Quantum wells, Data modeling, Modulation, Resistance, Data transmission, Capacitance, Vertical cavity surface emitting lasers, Optical interconnects, Temperature metrology

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Proceedings Article | 2 May 2014 Paper

Green nanophotonics for future datacom and Ethernet networks

Dieter Bimberg, Dejan Arsenijević, Gunter Larisch, Hui Li, James Lott, Philip Moser, Holger Schmeckebier, Philip Wolf

Proceedings Volume 9134, 913402 (2014) https://doi.org/10.1117/12.2053027

KEYWORDS: Oxides, Internet, Modulation, Mode locking, Picosecond phenomena, Vertical cavity surface emitting lasers, Nanophotonics, Data centers, Data communications, Optical interconnects

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Proceedings Article | 27 February 2014 Paper

Energy-efficient oxide-confined high-speed VCSELs for optical interconnects

Philip Moser, Philip Wolf, Gunter Larisch, Hui Li, James Lott, Dieter Bimberg

Proceedings Volume 9001, 900103 (2014) https://doi.org/10.1117/12.2044319

KEYWORDS: Oxides, Multimode fibers, Optical fibers, Modulation, Data transmission, Wind energy, Vertical cavity surface emitting lasers, Data centers, Optical interconnects, Temperature metrology

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Proceedings Article | 27 February 2014 Paper

Energy efficiency, bit rate, and modal properties of 980 nm VCSELs for very-short-reach optical interconnects

Hui Li, Philip Moser, Philip Wolf, Gunter Larisch, Leszek Frasunkiewicz, Maciej Dems, Tomasz Czyszanowski, James Lott, Dieter Bimberg

Proceedings Volume 9001, 90010B (2014) https://doi.org/10.1117/12.2045780

KEYWORDS: Oxides, Energy efficiency, Refractive index, Quantum wells, Gallium arsenide, Data transmission, Vertical cavity surface emitting lasers, Optical interconnects, Temperature metrology

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Proceedings Article | 13 March 2013 Paper

Impact of the aperture diameter on the energy efficiency of oxide-confined 850 nm high speed VCSELs

Philip Moser, James Lott, Philip Wolf, Gunter Larisch, Hui Li, Nikolay Ledentsov, Dieter Bimberg

Proceedings Volume 8639, 86390V (2013) https://doi.org/10.1117/12.2002446

KEYWORDS: Oxides, Energy efficiency, Modulation, Quantum efficiency, Resistance, Computing systems, Data transmission, Vertical cavity surface emitting lasers, Optical interconnects, Quantum information

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Proceedings Article | 29 November 2012 Paper

VCSELs for exascale computing, computer farms, and green photonics

Werner Hofmann, Philip Moser, Philip Wolf, Gunter Larisch, Hui Li, Wei Li, James Lott, Dieter Bimberg

Proceedings Volume 8552, 855205 (2012) https://doi.org/10.1117/12.2006273

KEYWORDS: Energy efficiency, Metals, Computing systems, Semiconductor lasers, Photonics, Vertical cavity surface emitting lasers, Data centers, Data communications, Optical interconnects, Computer security

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The bandwidth-induced communication bottleneck due to the intrinsic limitations of metal interconnects is inhibiting the performance and environmental friendliness of today´s supercomputers, data centers, and in fact all other modern electrically interconnected and interoperable networks such as data farms and "cloud" fabrics. The same is true for systems of optical interconnects (OIs), where even when the metal interconnects are replaced with OIs the systems remain limited by bandwidth, physical size, and most critically the power consumption and lifecycle operating costs. Vertical-cavity surface-emitting lasers (VCSELs) are ideally suited to solve this dilemma. Global communication providers like Google Inc., Intel Inc., HP Inc., and IBM Inc. are now producing optical interconnects based on VCSELs. The optimal bandwidth per link may be analyzed by by using Amdahl´s Law and depends on the architecture of the data center and the performance of the servers within the data center. According to Google Inc., a bandwidth of 40 Gb/s has to be accommodated in the future. IBM Inc. demands 80 Tbps interconnects between solitary server chips in 2020. We recently realized ultrahigh bit rate VCSELs up to 49 Gb/s suited for such optical interconnects emitting at 980 nm. These devices show error-free transmission at temperatures up to 155°C and operate beyond 200°C. Single channel data-rates of 40 Gb/s were achieved up to 75°C. Record high energy efficiencies close to 50 fJ/bit were demonstrated for VCSELs emitting at 850 nm. Our devices are fabricated using a full three-inch wafer process, and the apertures were formed by in-situ controlled selective wet oxidation using stainless steel-based vacuum equipment of our own design. assembly, and operation. All device data are measured, recorded, and evaluated by our proprietary fully automated wafer mapping probe station. The bandwidth density of our present devices is expected to be scalable from about 100 Gbps/mm² to a physical limit of roughly 15 Tbps/mm² based on the current 12.5 Gb/s VCSEL technology. Still more energy-efficient and smaller volume laser diode devices dissipating less heat are mandatory for further up scaling of the bandwidth. Novel metal-clad VCSELs enable a reduction of the device's footprint for potentially ultrashort range interconnects by 1 to 2 orders of magnitude compared to conventional VCSELs thus enabling a similar increase of device density and bandwidth.

Proceedings Article | 9 May 2012 Paper

High-speed VCSELs for energy efficient computer interconnects

Philip Moser, Philip Wolf, James Lott, Gunter Larisch, Alexey Payusov, Alex Mutig, Waldemar Unrau, Nikolay Ledentsov, Werner Hofmann, Dieter Bimberg

Proceedings Volume 8432, 843202 (2012) https://doi.org/10.1117/12.923054

KEYWORDS: Multimode fibers, Optical fibers, Modulation, Data transmission, Vertical cavity surface emitting lasers, Data centers, Optical interconnects, Binary data, Standards development, Temperature metrology

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Proceedings Article | 7 February 2012 Paper

980-nm VCSELs for optical interconnects at bandwidths beyond 40 Gb/s

W. Hofmann, P. Moser, P. Wolf, G. Larisch, W. Unrau, D. Bimberg

Proceedings Volume 8276, 827605 (2012) https://doi.org/10.1117/12.908466

KEYWORDS: Mirrors, Modulation, Gallium arsenide, Receivers, Photonics, Vertical cavity surface emitting lasers, Optical interconnects, Semiconducting wafers, Binary data, Temperature metrology

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Proceedings Article | 7 February 2012 Paper

Energy-efficient vertical-cavity surface-emitting lasers (VCSELs) for "green" data and computer communication

Philip Moser, James Lott, Philip Wolf, Gunter Larisch, Alexey Payusov, Gerrit Fiol, Nikolay Ledentsov, Werner Hofmann, Dieter Bimberg

Proceedings Volume 8276, 82760J (2012) https://doi.org/10.1117/12.906856

KEYWORDS: Multimode fibers, Optical fibers, Energy efficiency, Modulation, Data transmission, Vertical cavity surface emitting lasers, Data communications, Optical interconnects, Semiconducting wafers, Temperature metrology

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Showing 5 of 13 publications

Conference Committee Involvement (1)

Quantum Dots, Nanostructures, and Quantum Materials: Growth, Characterization, and Modeling XVII

5 February 2020 | San Francisco, California, United States

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