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Aleksejs Udalcovs
Researcher at Research Institutes of Sweden
Publications - 133
Citations - 1293
Aleksejs Udalcovs is an academic researcher from Research Institutes of Sweden. The author has contributed to research in topics: Wavelength-division multiplexing & Transmission (telecommunications). The author has an hindex of 17, co-authored 113 publications receiving 803 citations. Previous affiliations of Aleksejs Udalcovs include Royal Institute of Technology & Riga Technical University.
Papers
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Journal ArticleDOI
200 Gbps/Lane IM/DD Technologies for Short Reach Optical Interconnects
Xiaodan Pang,Weisheng Hu,Gunnar Jacobsen,Sergei Popov,Jiajia Chen,Oskars Ozolins,Rui Lin,Lu Zhang,Aleksejs Udalcovs,Lei Xue,Richard Schatz,Urban Westergren,Shilin Xiao +12 more
TL;DR: This article focuses on IM/DD transmissions, and provides an overview of recent research and development efforts on key enabling technologies for 200 Gbps per lane and beyond, and expects high-speed IM/ DD systems will remain advantageous in terms of system cost, power consumption, and footprint for short reach applications in the short- to mid- term perspective.
Journal ArticleDOI
100 GHz Externally Modulated Laser for Optical Interconnects
Oskars Ozolins,Xiaodan Pang,Miguel Iglesias Olmedo,Aditya Kakkar,Aleksejs Udalcovs,Simone Gaiarin,Jaime Rodrigo Navarro,Klaus M. Engenhardt,Tadeusz Asyngier,Richard Schatz,Jie Li,Fredrik Nordwall,Urban Westergren,Darko Zibar,Sergei Popov,Gunnar Jacobsen +15 more
TL;DR: In this article, a 116 Gb/s on-off keying (OOK), four PAM and 8 PAM optical transmitter using an InP-based integrated and packaged externally modulated laser for high-speed optical interconnects with up to 30dB static extinction ratio and over 100-GHz 3dB bandwidth with 2 dB ripple.
Journal ArticleDOI
Free-Space Communications Enabled by Quantum Cascade Lasers
Xiaodan Pang,Oskars Ozolins,Oskars Ozolins,Lu Zhang,Richard Schatz,Aleksejs Udalcovs,Xianbin Yu,Gunnar Jacobsen,Sergei Popov,Jiajia Chen,Sebastian Lourdudoss +10 more
Proceedings ArticleDOI
204-GBaud On-Off Keying Transmitter for Inter-Data Center Communications
Haik Mardoyan,Filipe Jorge,Oskars Ozolins,Jose Estaran,Aleksejs Udalcovs,Agnieszka Konczykowska,Muriel Riet,B. Duval,Virginie Nodjiadjim,Jean-Yves Dupuy,Xiaodan Pang,Urban Westergren,Jiajia Chen,Sergei Popov,Sebastien Bigo +14 more
TL;DR: An on-off keyed transmitter with direct detection, at record symbol rates of 204Gbaud and 140Gbaud, over 10km and 80km, respectively, powered by a high-speed InP-based 2:1 selector and travelling-wave electro-absorption laser-modulator.
Journal ArticleDOI
140/180/204-Gbaud OOK Transceiver for Inter- and Intra-Data Center Connectivity
Jose Estaran,Haik Mardoyan,Filipe Jorge,Oskars Ozolins,Aleksejs Udalcovs,Agnieszka Konczykowska,Muriel Riet,B. Duval,Virginie Nodjiadjim,Jean-Yves Dupuy,Xiaodan Pang,Urban Westergren,Jiajia Chen,Sergei Popov,Sebastien Bigo +14 more
TL;DR: An on–off keying intensity-modulation and direct-detection C-band optical transceiver capable of addressing all datacenter interconnect environments at well beyond 100 Gbaud is reported on, drawing conclusions from the observed system-level limitations of the respective environments at this ultrahigh baudrate.