Mixed Chromatic Dispersion Compensation Methods for Combined HDWDM Systems. - Vjaceslavs Bobrovs; Aleksejs Udalcovs; Sandis Spolitis; Oskars Ozolins; Girts Ivanovs (BWCCA, 2011)

Investigation of spectrally efficient transmission for differently modulated optical signals in mixed data rates WDM systems. - Aleksejs Udalcovs; Vjaceslavs Bobrovs (Swe-CTW, 2011)

Investigation of maximum distance reach for spectrally efficient combined WDM systems. - Vjaceslavs Bobrovs; Aleksejs Udalcovs; Ilja Trifonovs (BCFIC, 2012)

Investigation of spectrally efficient transmission for unequally channel spaced WDM systems with mixed data rates and signal formats. - Aleksejs Udalcovs; Vjaceslavs Bobrovs (CSNDSP, 2012)

Evaluation of SPM-induced optical signal distortions in ultra-dense mixed-WDM system. - Aleksejs Udalcovs; Vjaceslavs Bobrovs; Jurgis Porins (FGST, 2012)

Proposed model of mixed-WDM systems resulting from development trends in optical transport and access networks. - Aleksejs Udalcovs; Vjaceslavs Bobrovs (ICUMT, 2012)

Investigation of the maximum distance reach for the mixed-WDM systems with unequal frequency grid. - Aleksejs Udalcovs; Vjaceslavs Bobrovs; Girts Ivanovs (ISSSE, 2012)

Power efficiency vs. spectral efficiency and transmission distance in 2.5-10-40 Gbps backbone optical networks. - Vjaceslavs Bobrovs; Aleksejs Udalcovs; Girts Ivanovs (ISCCSP, 2014)

200-Gbps DMT Transmission over 1.6-km SSMF with A Single EML/DAC/PD for Optical Interconnects at C-Band. - Xuezhi Hong; Lu Zhang 051; Xiaodan Pang; Oskars Ozolins; Aleksejs Udalcovs; Changjian Guo; Fredrik Nordwall; Klaus M. Engenhardt; Aditya Kakkar; Jaime Rodrigo Navarro; Richard Schatz; Urban Westergren; et al. (ECOC, 2017)

First Experimental Demonstration of Physical-Layer Network Coding in PAM4 System for Passive Optical Interconnects. - Rui Lin 001; Yang Lu; Xiaodan Pang; Oskars Ozolins; Yuxin Cheng; Aleksejs Udalcovs; Sergei Popov; Gunnar Jacobsen; Ming Tang 005; Deming Liu; Jiajia Chen 001 (ECOC, 2017)

Matrix Receiving Scheme Supporting Arbitrary Multiple-Wavelength Reception for Optical Interconnects. - Yang Lu; Erik Agrell; Xiaodan Pang; Oskars Ozolins; Xuezhi Hong; Rui Lin 001; Yuxin Cheng; Aleksejs Udalcovs; Sergei Popov; Gunnar Jacobsen; Jiajia Chen 001 (ECOC, 2017)

100 Gbaud 4PAM Link for High Speed Optical Interconnects. - Oskars Ozolins; Xiaodan Pang; Aleksejs Udalcovs; Richard Schatz; Urban Westergren; Jaime Rodrigo Navarro; Aditya Kakkar; Fredrik Nordwall; Klaus M. Engenhardt; Jiajia Chen 001; Sergei Popov; Gunnar Jacobsen (ECOC, 2017)

4 Gbps PAM-4 and DMT Free Space Transmission using a 4.65-pm Quantum Cascaded Laser at Room Temperature. - Xiaodan Pang; Oskars Ozolins; Lu Zhang 051; Richard Schatz; Aleksejs Udalcovs; Joakim Storck; Grégory Maisons; Mathieu Carras; Shilin Xiao; Gunnar Jacobsen; Sergei Popov; Jiajia Chen 001; et al. (ECOC, 2017)

15-Gbaud PAM4 Digital Mobile Fronthaul with Enhanced Differential Pulse Coding Modulation Supporting 122 LTE-A Channels with up to 4096QAM. - Lu Zhang 051; Xiaodan Pang; Oskars Ozolins; Aleksejs Udalcovs; Richard Schatz; Urban Westergren; Gunnar Jacobsen; Sergei Popov; Shilin Xiao; Jiajia Chen 001 (ECOC, 2017)

High-speed optical interconnects with integrated externally modulated laser. - Oskars Ozolins; Xiaodan Pang; Miguel Iglesias Olmedo; Aditya Kakkar; Aleksejs Udalcovs; Jaime Rodrigo Navarro; Richard Schatz; Urban Westergren; Gunnar Jacobsen; Sergei Popov (ICTON, 2017)

Telecom Compatibility Validation of Quantum Key Distribution Co-Existing with 112 Gbps/λ/core Data Transmission in Non-Trench and Trench-Assistant Multicore Fibers. - Rui Lin 001; Aleksejs Udalcovs; Oskars Ozolins; Xiaodan Pang; Lin Gan; Li Shen 010; Ming Tang 005; Songnian Fu; Sergei Popov; C. Yang; Weijun Tong; Deming Liu; et al. (ECOC, 2018)

140 Gbaud On-Off Keying Links in C-Band for Short-Reach Optical Interconnects. - Oskars Ozolins; José Manuel Estarán; Aleksejs Udalcovs; Filipe Jorge; Haïk Mardoyan; Agnieszka Konczykowska; Muriel Riet; Bernadette Duval; Virginie Nodjiadjim; Jean-Yves Dupuy; Xiaodan Pang; Urban Westergren; et al. (ECOC, 2018)

Inter-Core Crosstalk in Multicore Fibers: Impact on 56-Gbaud/λ/Core PAM-4 Transmission. - Aleksejs Udalcovs; Rui Lin 001; Oskars Ozolins; Lin Gan; Lu Zhang 051; Xiaodan Pang; Richard Schatz; Anders Djupsjobacka; Ming Tang 005; Songnian Fu; Deming Liu; Weijun Tong; et al. (ECOC, 2018)

Experimental Demonstration of 503.61-Gbit/s DMT over 10-km 7-Core Fiber with 1.5-µm SM-VCSEL for Optical Interconnects. - Lu Zhang 051; Joris Van Kerrebrouck; Oskars Ozolins; Rui Lin 001; Xiaodan Pang; Aleksejs Udalcovs; Silvia Spiga; Markus-Christian Amann; Lin Gan; Ming Tang 005; Songnian Fu; Richard Schatz; et al. (ECOC, 2018)

Kernel Adaptive Filtering for Nonlinearity-Tolerant Optical Direct Detection Systems. - Lu Zhang 051; Oskars Ozolins; Rui Lin 001; Aleksejs Udalcovs; Xiaodan Pang; Lin Gan; Richard Schatz; Anders Djupsjobacka; Jonas Martensson 002; Urban Westergren; Ming Tang 005; Songnian Fu; et al. (ECOC, 2018)

Digital Radio-Over-Multicore-Fiber System with Self-Homodyne Coherent Detection and Entropy Coding for Mobile Fronthaul. - Lu Zhang 051; Aleksejs Udalcovs; Rui Lin 001; Oskars Ozolins; Xiaodan Pang; Lin Gan; Richard Schatz; Anders Djupsjobacka; Jonas Martensson 002; Ming Tang 005; Songnian Fu; Deming Liu; et al. (ECOC, 2018)

Short Reach Optical Interconnects with Single Externally Modulated Laser Operated in C-Band. - Oskars Ozolins; Xiaodan Pang; Aleksejs Udalcovs; Lu Zhang 051; Richard Schatz; Urban Westergren; Gunnar Jacobsen; Sergei Popov; Jiajia Chen 001 (ICTON, 2018)

726.7-Gb/s 1.5-μm Single-Mode VCSEL Discrete Multi-Tone Transmission over 2.5-km Multicore Fiber. - Joris Van Kerrebrouck; Lu Zhang 051; Rui Lin 001; Xiaodan Pang; Aleksejs Udalcovs; Oskars Ozolins; Silvia Spiga; Markus-Christian Amann; Geert Van Steenberge; Lin Gan; Ming Tang 005; Songnian Fu; et al. (OFC, 2018)

Real-time 100 Gbps/λ/core NRZ and EDB IM/DD Transmission over 10 km Multicore Fiber. - Rui Lin 001; Xiaodan Pang; Joris Van Kerrebrouck; Michiel Verplaetse; Oskars Ozolins; Aleksejs Udalcovs; Lu Zhang 051; Lin Gan; Ming Tang 005; Songnian Fu; Richard Schatz; Urban Westergren; et al. (OFC, 2018)

204-GBaud On-Off Keying Transmitter for Inter-Data Center Communications. - Haïk Mardoyan; Filipe Jorge; Oskars Ozolins; José Manuel Estarán; Aleksejs Udalcovs; Agnieszka Konczykowska; Muriel Riet; Bernadette Duval; Virginie Nodjiadjim; Jean-Yves Dupuy; Xiaodan Pang; Urban Westergren; et al. (OFC, 2018)

7×100 Gbps PAM-4 Transmission over 1-km and 10-km Single Mode 7-core Fiber using 1.5-μm SM-VCSEL. - Xiaodan Pang; Joris Van Kerrebrouck; Oskars Ozolins; Rui Lin 001; Aleksejs Udalcovs; Lu Zhang 051; Silvia Spiga; Markus-Christian Amann; Geert Van Steenberge; Lin Gan; Ming Tang 005; Songnian Fu; et al. (OFC, 2018)

K-means Clustering based Multi-Dimensional Quantization Scheme for Digital Mobile Fronthaul. - Lu Zhang 051; Xiaodan Pang; Oskars Ozolins; Aleksejs Udalcovs; Sergei Popov; Shilin Xiao; Jiajia Chen 001 (OFC, 2018)

Spatial division multiplexing for optical data center networks. - Rui Lin 001; Joris Van Kerrebrouck; Xiaodan Pang; Michiel Verplaetse; Oskars Ozolins; Aleksejs Udalcovs; Lu Zhang 051; Lin Gan; Ming Tang 005; Songnian Fu; Richard Schatz; Urban Westergren; et al. (ONDM, 2018)

High-speed PAM4-based Optical SDM Interconnects with Directly Modulated Long-wavelength VCSEL. - Joris Van Kerrebrouck; Xiaodan Pang; Oskars Ozolins; Rui Lin 001; Aleksejs Udalcovs; Lu Zhang 051; Haolin Li; Silvia Spiga; Markus-Christian Amann; Lin Gan; Ming Tang 005; Songnian Fu; et al. (CoRR, 2018)

Embedding Quantum Key Distribution into Optical Telecom Communication Systems. - R. Lin; Aleksejs Udalcovs; Oskars Ozolins; M. Tang; S. Fu; Sergei Popov; Thiago Ferreira da Silva; Guilherme B. Xavier; Jiajia Chen 001 (ICTON, 2019)

Multilevel Modulation at 100 Gbaud for Short Reach C-Band Links. - Oskars Ozolins; Xiaodan Pang; Aleksejs Udalcovs; Lu Zhang 051; Richard Schatz; Urban Westergren; Gunnar Jacobsen; Jiajia Chen 001; Sergei Popov (ICTON, 2019)

Towards 25+Gbpsλ IM-DD PON: NRZ, Duobinary, PAM4, and DMT Transmission and Optical Budget Comparison. - Aleksejs Udalcovs; Lu Zhang 051; Anders Djupsjöbacka; Shilin Xiao; Jiajia Chen 001; Sergei Popov; Oskars Ozolins (ICTON, 2019)

Integrated Dual-DFB Laser for 408 GHz Carrier Generation Enabling 131 Gbit/s Wireless Transmission over 10.7 Meters. - Shi Jia; Mu-Chieh Lo; Lu Zhang 051; Oskars Ozolins; Aleksejs Udalcovs; Deming Kong; Xiaodan Pang; Xianbin Yu; Shilin Xiao; Sergei Popov; Jiajia Chen 001; Guillermo Carpintero; et al. (OFC, 2019)

Spontaneous Raman Scattering Effects in Multicore Fibers: Impact on Coexistence of Quantum and Classical Channels. - Rui Lin 001; Lin Gan; Aleksejs Udalcovs; Oskars Ozolins; Xiaodan Pang; Li Shen 010; Sergei Popov; Ming Tang 005; Songnian Fu; Weijun Tong; Deming Liu; Thiago Ferreira da Silva; et al. (OFC, 2019)

Beyond 200 Gbps Per Lane Intensity Modulation Direct Detection (IM/DD) Transmissions for Optical Interconnects: Challenges and Recent Developments. - Xiaodan Pang; Oskars Ozolins; Lu Zhang 051; Aleksejs Udalcovs; Rui Lin 001; Richard Schatz; Urban Westergren; Shilin Xiao; Weisheng Hu; Gunnar Jacobsen; Sergei Popov; Jiajia Chen 001 (OFC, 2019)

Toward Terabit Digital Radio over Fiber Systems: Architecture and Key Technologies. - Lu Zhang 051; Aleksejs Udalcovs; Rui Lin 001; Oskars Ozolins; Xiaodan Pang; Lin Gan; Richard Schatz; Ming Tang 005; Songnian Fu; Deming Liu; Weijun Tong; Sergei Popov; et al. (IEEE Commun. Mag., 2019)

Polarization Dynamics of Coupled Raman Lasers. - Stanislav Kolpakov; Sergey V. Sergeyev; Aleksejs Udalcovs; Xiaodan Pang; Oskars Ozolins; Richard Schatz; Sergei Popov (ICTON, 2020)

300 Gbps Short-Reach C-Band Optical Links. - Oskars Ozolins; Lu Zhang 051; Aleksejs Udalcovs; Hadrien Louchet; Thomas Dippon; Markus Gruen; Xiaodan Pang; Richard Schatz; Urban Westergren; Shilin Xiao; Sergei Popov; Jiajia Chen 001 (ICTON, 2020)

Telecommunication Compatibility Evaluation for Co-existing Quantum Key Distribution in Homogenous Multicore Fiber. - Rui Lin 001; Aleksejs Udalcovs; Oskars Ozolins; Xiaodan Pang; Lin Gan; Ming Tang 005; Songnian Fu; Sergei Popov; Thiago Ferreira da Silva; Guilherme B. Xavier; Jiajia Chen 001 (IEEE Access, 2020)

Total Cost of Ownership of Digital vs. Analog Radio-Over-Fiber Architectures for 5G Fronthauling. - Aleksejs Udalcovs; Marco Levantesi; Patryk J. Urban; Darli A. A. Mello; Roberto Gaudino; Oskars Ozolins; Paolo Monti 001 (IEEE Access, 2020)

Kernel Affine Projection for Nonlinearity Tolerant Optical Short Reach Systems. - Lu Zhang 051; Jiajia Chen 001; Aleksejs Udalcovs; Xiaodan Pang; Richard Schatz; Urban Westergren; Sergei Popov; Shilin Xiao; Oskars Ozolins (IEEE Trans. Commun., 2020)

2020_JOCN_Constellation_Dataset. - Yuchuan Fan; Aleksejs Udalcovs; Xiaodan Pang; Carlos Natalino; Marija Furdek; Sergei Popov; Oskars Ozolins (IEEE DataPort, 2020)

Laser Linewidth Tolerant EVM Estimation Approach for Intelligent Signal Quality Monitoring Relying on Feedforward Neural Networks. - Yuchuan Fan; Xiaodan Pang; Aleksejs Udalcovs; Carlos Natalino; Richard Schatz; Marija Furdek; Sergei Popov; Oskars Ozolins (ECOC, 2021)

Free-Space Transmissions in the Upper- and Lower-THz Bands Assisted with Photonics. - Xiaodan Pang; Oskars Ozolins; Shi Jia; Lu Zhang 051; Richard Schatz; Aleksejs Udalcovs; Vjaceslavs Bobrovs; Hao Hu 009; Toshio Morioka; Yan-Ting Sun; Jiajia Chen 001; Sebastian Lourdudoss; et al. (ECOC, 2021)

Up to 6 Gbps Mid-Infrared Free-Space Transmission with a Directly Modulated Quantum Cascade Laser. - Xiaodan Pang; Richard Schatz; Mahdieh Joharifar; Aleksejs Udalcovs; Vjaceslavs Bobrovs; Lu Zhang 051; Xianbin Yu; Yan-Ting Sun; Sergei Popov; Sebastian Lourdudoss; Oskars Ozolins (ECOC, 2021)

Spectrum Anomaly Detection for Optical Network Monitoring Using Deep Unsupervised Learning. - Carlos Natalino; Aleksejs Udalcovs; Lena Wosinska; Oskars Ozolins; Marija Furdek (IEEE Commun. Lett., 2021)

Experimental validation of CNNs versus FFNNs for time- and energy-efficient EVM estimation in coherent optical systems. - Yuchuan Fan; Aleksejs Udalcovs; Carlos Natalino; Xiaodan Pang; Richard Schatz; Marija Furdek; Sergei Popov; Oskars Ozolins (JOCN, 2021)

Fast signal quality monitoring for coherent communications enabled by CNN-based EVM estimation. - Yuchuan Fan; Aleksejs Udalcovs; Xiaodan Pang; Carlos Natalino; Marija Furdek; Sergei Popov; Oskars Ozolins (JOCN, 2021)

Optical Amplification-Free 200 Gbaud On-Off Keying Link for Intra-Data Center Communications. - Oskars Ozolins; Toms Salgals; Hadrien Louchet; Mahdieh Joharifar; Richard Schatz; Markus Gruen; Thomas Dippon; Benjamin Krüger 001; Di Che; Yasuhiro Matsui; Yuchuan Fan; Aleksejs Udalcovs; et al. (OFC, 2022)

11 Gb/s LWIR FSO Transmission at 9.6 µm using a Directly-Modulated Quantum Cascade Laser and an Uncooled Quantum Cascade Detector. - Xiaodan Pang; Hamza Dely; Richard Schatz; Djamal Gacemi; Mahdieh Joharifar; Toms Salgals; Aleksejs Udalcovs; Yan-Ting Sun; Yuchuan Fan; Lu Zhang 051; Etienne Rodriguez; Sandis Spolitis; et al. (OFC, 2022)

High Baudrate Short-Reach Communication. - Oskars Ozolins; Toms Salgals; Hadrien Louchet; Mahdieh Joharifar; Richard Schatz; Di Che; Yasuhiro Matsui; Markus Gruen; Thomas Dippon; Fabio Pittalà; Benjamin Krüger 001; Yuchuan Fan; et al. (OECC/PSC, 2022)

FPGA-Implemented Fractal Decoder with Forward Error Correction in Short-Reach Optical Interconnects. - Svitlana Matsenko; Oleksiy Borysenko; Sandis Spolitis; Aleksejs Udalcovs; Lilita Gegere; Aleksandr Krotov; Oskars Ozolins; Vjaceslavs Bobrovs (Entropy, 2022)

Constellation diagrams for spectrum anomaly detection in optical networks. - Carlos Natalino; Aleksejs Udalcovs; Lena Wosinska; Oskars Ozolins; Marija Furdek (IEEE DataPort, 2022)

106.25 Gbaud 4-Level Pulse Amplitude Modulation Links Supporting (2x)100Gigabit Ethernet on Single Lambda. - Oskars Ozolins; Armands Ostrovskis; Toms Salgals; Benjamin Krüger 001; Fabio Pittalà; Mahdieh Joharifar; Richard Schatz; Di Che; Yasuhiro Matsui; Thomas Dippon; Yuchuan Fan; Aleksejs Udalcovs; et al. (OFC, 2023)