Publications

[Extracted from DiVA, the publication database at KTH.]

Fan, Y.; Pang, X.; Udalcovs, A.; Natalino, C.; Zhang, L.; Spolitis, S.; Bobrovs, V.; Schatz, R.; Yu, X.; Furdek, M.; Popov, S.; Ozolins, O. (2022):
EVM Estimation for Performance Monitoring in Coherent Optical Systems: An Approach of Linear Regression.
[Conference paper] IEEE/OSA Conference on Lasers and Electro-Optics (CLEO); [Details]
Fan, Y.; Pang, X.; Udalcovs, A.; Natalino, C.; Zhang, L.; Spolitis, S.; Bobrovs, V.; Schatz, R.; Yu, X.; Furdek, M.; Popov, S.; Ozolins, O. (2022):
A Comparison of Linear Regression and Deep LearningModel for EVM Estimation in Coherent Optical Systems.
[Conference paper] Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR); [Details]
Pang, X.; Ozolins, O.; Jia, S.; Zhang, L.; Schatz, R.; Udalcovs, A.; Bobrovs, V.; Hu, H.; Morioka, T.; Sun, Y.; Chen, J.; Lourdudoss, S.; Oxenloewe, L.; Popov, S.; Yu, X. (2022):
Bridging the Terahertz Gap: Photonics-assisted Free-Space Communications from the Submillimeter-Wave to the Mid-Infrared.
Journal of Lightwave Technology : 1-1 [Details]
Pang, X.; Schatz, R.; Joharifar, M.; Udalcovs, A.; Bobrovs, V.; Zhang, L.; Yu, X.; Sun, Y.; Maisons, G.; Carras, M.; Popov, S.; Lourdudoss, S.; Ozolins, O. (2022):
Direct Modulation and Free-Space Transmissions of up to 6 Gbps Multilevel Signals With a 4.65-mu m Quantum Cascade Laser at Room Temperature.
Journal of Lightwave Technology 40: 2370-2377 [Details]
Fan, Y.; Pang, X.; Udalcovs, A.; Natalino, C.; Zhang, L.; Bobrovs, V.; Schatz, R.; Yu, X.; Furdek, M.; Popov, S.; Ozolins, O. (2022):
Feedforward Neural Network-based EVM Estimation - Impairment Tolerance in Coherent Optical Systems.
IEEE Journal of Selected Topics in Quantum Electronics : 1-1 [Details]
Ozolins, O.; Salgals, T.; Louchet, H.; Joharifar, M.; Schatz, R.; Gruen, M.; Dippon, T.; Krueger, B.; Che, D.; Matsui, Y.; Fan, Y.; Udalcovs, A.; Zhang, L.; Yu, X.; Spolitis, S.; Bobrovs, V.; Popov, S.; Pang, X. (2022):
Optical Amplification-Free 200 Gbaud On-Off Keying Link for Intra-Data Center Communications.
[Conference paper] 2022 Optical Fiber Communications Conference and Exhibition, OFC 2022, San Diego,6 March 2022 through 10 March 2022; 2022 Optical Fiber Communications Conference and Exhibition, OFC 2022 - Proceedings [Details]
Pang, X.; Dely, H.; Schatz, R.; Gacemi, D.; Joharifar, M.; Salgals, T.; Udalcovs, A.; Sun, Y.; Fan, Y.; Zhang, L.; Rodriguez, E.; Spolitis, S.; Bobrovs, V.; Yu, X.; Lourdudoss, S.; Popov, S.; Ozolins, O.; Vasanelli, A.; Sirtori, C. (2022):
11 Gb/s LWIR FSO Transmission at 9.6 mu m using a Directly-Modulated Quantum Cascade Laser and an Uncooled Quantum Cascade Detector.
[Conference paper] 2022 Optical Fiber Communications Conference and Exhibition, OFC, 2022, San Diego, 6 March 2022 through 10 March 2022; 2022 Optical Fiber Communications Conference and Exhibition, OFC 2022 - Proceedings [Details]
Pang, X.; Schatz, R.; Joharifar, M.; Udalcovs, A.; Bobrovs, V.; Zhang, L.; Yu, X.; Sun, Y.; Popov, S.; Lourdudoss, S.; Ozolins, O. (2021):
Directly modulated quantum cascade laser and its application in free-space communications.
[Conference paper] Conference on Optoelectronic Devices and Integration X, OCT 10-12, 2021, Nantong, PEOPLES R CHINA; Optoelectronic Devices And Integration X [Details]
Che, D.; Matsui, Y.; Schatz, R.; Raybon, G.; Bhatt, V.; Kwakernaak, M.; Sudo, T. (2021):
Long-Term Reliable >200-Gb/s Directly Modulated Lasers with 800GbE-Compliant DSP.
[Conference paper] 2021 Optical Fiber Communications Conference and Exhibition, OFC 2021, 6 June 2021 through 11 June 2021; 2021 Optical Fiber Communications Conference and Exhibition, OFC 2021 - Proceedings [Details]
Fan, Y.; Udalcovs, A.; Pang, X.; Natalino, C.; Schatz, R.; Furdek, M.; Popov, S.; Ozolins, O. (2021):
Deep learning assisted pre-carrier phase recovery EVM estimation for coherent transmission systems.
[Conference paper] CLEO: Science and Innovations, CLEO:S and I 2021 - Part of Conference on Lasers and Electro-Optics, CLEO 2021, 9 May 2021 through 14 May 2021; Optics InfoBase Conference Papers [Details]
Fan, Y.; Udalcovs, A.; Pang, X.; Natalino, C.; Schatz, R.; Furdek, M.; Popov, S.; Ozolins, O. (2021):
Deep Learning Assisted Pre-Carrier Phase Recovery EVM Estimation for Coherent Transmission Systems.
[Conference paper] 2021 Conference on Lasers and Electro-Optics, CLEO 2021, Virtual, Online, 9-14 May 2021; 2021 Conference on Lasers and Electro-Optics, CLEO 2021 - Proceedings [Details]
Che, D.; Matsui, Y.; Schatz, R.; Raybon, G.; Bhatt, V.; Kwakernaak, M.; Sudo, T. (2021):
Long-Term Reliable > 200-Gb/s Directly Modulated Lasers with 800GbE-Compliant DSP.
[Conference paper] Optical Fiber Communications Conference and Exhibition (OFC), JUN 06-11, 2021, ELECTR NETWORK; 2021 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC) [Details]
Pang, X.; Udalcovs, A.; Schatz, R.; Bobrovs, V.; Jacobsen, G.; Popov, S.; Ozolins, O. (2021):
Short Reach Communication Technologies for Client-Side Optics Beyond 400 Gbps.
IEEE Photonics Technology Letters 33: 1046-1049 [Details]
Spyropoulou, M.; Kanakis, G.; Jiao, Y.; Stabile, R.; Calabretta, N.; Williams, K.; Nodjiadjim, V.; Hersent, R.; Konczykowska, A.; Schatz, R.; Ozolins, O.; Joharifar, M.; Zverina, J.; Zoldak, M.; Bakopoulos, P.; Patronas, G.; Avramopoulos, H. (2021):
The path to 1Tb/s and beyond datacenter interconnect networks - technologies, components and subsystems.
[Conference paper] Conference on Metro and Data Center Optical Networks and Short-Reach Links IV, MAR 06-11, 2021, ELECTR NETWORK; METRO AND DATA CENTER OPTICAL NETWORKS AND SHORT-REACH LINKS IV [Details]
Fan, Y.; Udalcovs, A.; Natalino, C.; Pang, X.; Schatz, R.; Furdek, M.; Popov, S.; Ozolins, O. (2021):
Experimental validation of CNNs versus FFNNs for time- and energy-efficient EVM estimation in coherent optical systems.
Journal of Optical Communications and Networking 13: E63-E71 [Details]
Ozolins, O.; Pang, X.; Udalcovs, A.; Schatz, R.; Spolitis, S.; Bobrovs, V.; Jacobsen, G.; Popov, S. (2021):
100 Gbaud On-Off Keying/Pulse Amplitude Modulation Links in C-Band for Short-Reach Optical Interconnects.
Applied Sciences 11: [Details]
Che, D.; Matsui, Y.; Schatz, R.; Rodes, R.; Khan, F.; Kwakernaak, M.; Sudo, T. (2021):
200-Gb/s Direct Modulation of a 50-GHz Class Laser with Advanced Digital Modulations.
Journal of Lightwave Technology 39: 845-852 [Details]
Matsui, Y.; Schatz, R.; Che, D.; Khan, F.; Kwakernaak, M.; Sudo, T. (2021):
Low-chirp isolator-free 65-GHz-bandwidth directly modulated lasers.
Nature Photonics 15: 59-63 [Details]
Matsui, Y.; Schatz, R.; Che, D.; Khan, F.; Kwakernaak, M.; Sudo, T. (2021):
Recent progress of VCSEL Photonics and their applications.
[Conference paper] 2021 European Conference on Optical Communication, ECOC 2021, Bordeaux, 13 September 2021 through 16 September 2021; 2021 European Conference on Optical Communication (ECOC) [Details]
Pang, X.; Schatz, R.; Joharifar, M.; Udalcovs, A.; Bobrovs, V.; Zhang, L.; Yu, X.; Sun, Y.; Popov, S.; Lourdudoss, S.; Ozolins, O. (2021):
Up to 6 Gbps Mid-Infrared Free-Space Transmission with a Directly Modulated Quantum Cascade Laser.
[Conference paper] European Conference on Optical Communication (ECOC), SEP 13-16, 2021, Bordeaux, France; 2021 European Conference on Optical Communication, ECOC 2021 [Details]
Fan, Y.; Pang, X.; Udalcovs, A.; Natalino, C.; Schatz, R.; Furdek, M.; Popov, S.; Ozolins, O. (2021):
Laser Linewidth Tolerant EVM Estimation Approach for Intelligent Signal Quality Monitoring Relying on Feedforward Neural Networks.
[Conference paper] 2021 European Conference on Optical Communication, ECOC 2021, Bordeaux, 13 September 2021 through 16 September 2021; 2021 European Conference on Optical Communication, ECOC 2021 [Details]
Pang, X.; Ozolins, O.; Jia, S.; Zhang, L.; Schatz, R.; Udalcovs, A.; Bobrovs, V.; Hu, H.; Morioka, T.; Sun, Y.; Chen, J.; Lourdudoss, S.; Oxenlowe, L.; Popov, S.; Yu, X. (2021):
Free-Space Transmissions in the Upper- and Lower-THz Bands Assisted with Photonics.
[Conference paper] 2021 European Conference on Optical Communication, ECOC 2021, Bordeaux, France, 13 September 2021 through 16 September 2021; 2021 European Conference on Optical Communication, ECOC 2021 [Details]
Pang, X.; Udalcovs, A.; Schatz, R.; Popov, S.; Ozolins, O. (2020):
High-Speed Short Reach Optical Communications - Technological Options and Challenges.
[Conference paper] Asia Communications and Photonics Conference / International Conference on Information Photonics and Optical Communications (ACP/IPOC), OCT 24-27, 2020, Beijing, PEOPLES R CHINA; 2020 Asia Communications and Photonics Conference (ACP) and International Conference on Information Photonics and Optical Communications (IPOC) [Details]
Liu, Z.; Matsui, Y.; Schatz, R.; Khan, F.; Kwakernaak, M.; Sudo, T. (2020):
50-GHz Gain Switching and Period Doubling using an Optical Injection Locked Cavity-Enhanced DFB Laser.
[Conference paper] 2020 Optical Fiber Communications Conference and Exhibition, OFC 2020, 8 March 2020 through 12 March 2020; 2020 Optical Fiber Communications Conference and Exhibition, OFC 2020 - Proceedings [Details]
Matsui, Y.; Schatz, R.; Che, D.; Khan, F.; Kwakernaak, M.; Sudo, T. (2020):
Isolator-Free > 67-GHz Bandwidth DFB+R Laser with Suppressed Chirp.
[Conference paper] 2020 Optical Fiber Communications Conference and Exhibition, OFC 2020, 8 March 2020 through 12 March 2020; 2020 Optical Fiber Communications Conference and Exhibition, OFC 2020 - Proceedings [Details]
Pang, X.; Udalcovs, A.; Schatz, R.; Popov, S.; Ozolins, O. (2020):
High-speed short reach optical communications - Technological options and challenges.
[Conference paper] 2020 Asia Communications and Photonics Conference, ACPC 2020/International Conference on Information Photonics and Optical Communications, IPOC 2020, 24 October 2020 through 27 October 2020; Optics InfoBase Conference Papers [Details]
Che, D.; Matsui, Y.; Schatz, R.; Rodes, R.; Khan, F.; Kwakernaak, M.; Sudo, T.; Chandrasekhar, S.; Cho, J.; Chen, X.; Winzer, P. (2020):
Direct Modulation of a 54-GHz Distributed Bragg Reflector Laser with 100-GBaud PAM-4 and 80-GBaud PAM-8.
[Conference paper] 2020 Optical Fiber Communications Conference and Exhibition, OFC 2020, 8-12 March 2020; 2020 Optical Fiber Communications Conference and Exhibition, OFC 2020 - Proceedings [Details]
Matsui, Y.; Schatz, R.; Che, D.; Khan, F.; Kwakernaak, M.; Sudo, T. (2020):
Isolator-free > 67-GHz bandwidth DFB plus R laser with suppressed chirp.
[Conference paper] 2020 optical fiber communications conference and exposition (OFC); 2020 optical fiber communications conference and exposition (OFC) [Details]
Liu, Z.; Matsui, Y.; Schatz, R.; Khan, F.; Kwakernaak, M.; Sudo, T. (2020):
50-GHz Gain Switching and Period Doubling Using an Optical Injection Locked Cavity-enhanced DFB Laser.
[Conference paper] 2020 optical fiber communications conference and exposition (OFC); 2020 optical fiber communications conference and exposition (OFC) [Details]
Ozolins, O.; Zhang, L.; Udalcovs, A.; Louchet, H.; Dippon, T.; Gruen, M.; Pang, X.; Schatz, R.; Westergren, U.; Xiao, S.; Popov, S.; Chen, J. (2020):
300 Gbps Short-Reach C-Band Optical Links.
[Conference paper] 22nd International Conference on Transparent Optical Networks (ICTON), JUL 19-23, 2020, Bari, ITALY; 2020 22nd international conference on transparent optical networks (ICTON 2020) [Details]
Ozolins, O.; Zhang, L.; Udalcovs, A.; Louchet, H.; DIppon, T.; Gruen, M.; Pang, X.; Schatz, R.; Westergren, U.; Xiao, S.; Popov, S.; Chen, J. (2020):
300+ Gbps Short-Reach Optical Communications.
[Conference paper] 2020 Conference on Lasers and Electro-Optics, CLEO 2020, 10-15 May 2020; Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS [Details]
Kolpakov, S.; Sergeyev, S.; Udalcovs, A.; Pang, X.; Ozolins, O.; Schatz, R.; Popov, S. (2020):
Polarization dynamics of coupled raman lasers.
[Conference paper] 22nd International Conference on Transparent Optical Networks, ICTON 2020, 19 July 2020 through 23 July 2020; International Conference on Transparent Optical Networks [Details]
Matsui, Y.; Schatz, R.; Che, D.; Khan, F.; Kwakernaak, M.; Sudo, T. (2020):
Isolator-free \textgreater 67-GHz bandwidth DFB+R laser with suppressed chirp.
[Conference paper] Optical Fiber Communication Conference, OFC 2020; San Diego; United States; 8 March 2017 through 12 March 2017; Optical Fiber Communication Conference, OFC 2020 [Details]
Liu, Z.; Matsui, Y.; Schatz, R.; Khan, F.; Kwakernaak, M.; Sudo, T. (2020):
50-GHz gain switching and period doubling using an optical injection locked cavity-enhanced DFB laser.
[Conference paper] Optical Fiber Communication Conference, OFC 2020; San Diego; United States; 8 March 2017 through 12 March 2017; Optical Fiber Communication Conference, OFC 2020 [Details]
Pang, X.; Ozolins, O.; Zhang, L.; Schatz, R.; Udalcovs, A.; Yu, X.; Jacobsen, G.; Popov, S.; Chen, J.; Lourdudoss, S. (2020):
Free-Space Communications Enabled by Quantum Cascade Lasers.
Physica Status Solidi (a) applications and materials science : [Details]
Che, D.; Matsui, Y.; Schatz, R.; Rodes, R.; Khan, F.; Kwakernaak, M.; Sudo, T.; Chandrasekhar, S.; Cho, J.; Chen, X.; Winzer, P. (2020):
Direct modulation of a 54-GHz distributed Bragg reflector laser with 100-Gbaud PAM-4 and 80-Gbaud PAM-8.
[Conference paper] Optical Fiber Communication Conference, OFC 2020, San Diego, USA, 8-12 March 2017; Optical Fiber Communication Conference, OFC 2020 [Details]
Panajotov, K.; Schatz, R. (2020):
Coupled-Cavity VCSEL with an Integrated Electro-Absorption Modulator - Small- and Large-Signal Modulation Analysis.
Applied Sciences 10: [Details]
Kolpakov, S.; Sergeyev, S.; Udalcovs, A.; Pang, X.; Ozolins, O.; Schatz, R.; Popov, S. (2020):
Optical rogue waves in coupled fiber Raman lasers.
Optics Letters 45: 4726-4729 [Details]
Omanakuttan, G.; Sun, Y.; Reuterskiöld-Hedlund, C.; Junesand, C.; Schatz, R.; Lourdudoss, S.; Pillard, V.; Lelarge, F.; Browne, J.; Justice, J.; Corbett, B. (2020):
Surface emitting 1.5 mu m multi-quantum well LED on epitaxial lateral overgrowth InP/Si.
Optical Materials Express 10: 1714-1723 [Details]
Spyropoulou, M.; Kanakis, G.; Jiao, Y.; Stabile, R.; Calabretta, N.; Williams, K.; Dupuy, J.; Konczykowska, A.; Schatz, R.; Ozolins, O.; Zverina, J.; Zoldak, M.; Bakopoulos, P.; Patronas, G.; Avramopoulos, H. (2020):
Towards 1.6T datacentre interconnect technologies - the TWILIGHT perspective.
JOURNAL OF PHYSICS-PHOTONICS 2: [Details]
Zhang, L.; Chen, J.; Udalcovs, A.; Pang, X.; Schatz, R.; Westergren, U.; Popov, S.; Xiao, S.; Ozolins, O. (2020):
Kernel Affine Projection for Nonlinearity Tolerant Optical Short Reach Systems.
IEEE Transactions on Communications 68: 6403-6412 [Details]
Pang, X.; Hu, W.; Jacobsen, G.; Popov, S.; Chen, J.; Ozolins, O.; Lin, R.; Zhang, L.; Udalcovs, A.; Xue, L.; Schatz, R.; Westergren, U.; Xiao, S. (2020):
200 Gbps & x002F;Lane IM & x002F;DD Technologies for Short Reach Optical Interconnects.
Journal of Lightwave Technology 38: 492-503 [Details]
Liu, Z.; Matsui, Y.; Schatz, R.; Khan, F.; Kwakernaak, M.; Sudo, T. (2020):
50-GHz Repetition Gain Switching Using a Cavity-Enhanced DFB Laser Assisted by Optical Injection Locking.
Journal of Lightwave Technology 38: 1844-1850 [Details]
Che, D.; Matsui, Y.; Chen, X.; Schatz, R.; Iannone, P. (2020):
400-Gb/s direct modulation using a DFB plus R laser.
Optics Letters 45: 3337-3339 [Details]
Rosa, P.; Rizzelli, G.; Pang, X.; Ozolins, O.; Udalcovs, A.; Tan, M.; Jaworski, M.; Marciniak, M.; Sergeyev, S.; Schatz, R.; Jacobsen, G.; Popov, S.; Ania-Castanon, J. (2020):
Unrepeatered 240-km 64-QAM Transmission Using Distributed Raman Amplification over SMF Fiber.
Applied Sciences 10: [Details]
Zhang, L.; Chen, J.; Udalcovs, A.; Louchet, H.; Dippon, T.; Gruen, M.; Pang, X.; Schatz, R.; Westergren, U.; Popov, S.; Xiao, S.; Ozolins, O. (2019):
Lattice pilot aided DMT transmission for optical interconnects achieving 5.82-bits/Hz per lane.
[Conference paper] 45th European Conference on Optical Communication, ECOC 2019, 22 September 2019 through 26 September 2019; IET Conference Publications [Details]
Ozolins, O.; Zhang, L.; Udalcovs, A.; Louchet, H.; Dippon, T.; Gruen, M.; Pang, X.; Schatz, R.; Westergren, U.; Xiao, S.; Popov, S.; Chen, J. (2019):
100 Gbaud PAM4 link without EDFA and post-equalization for optical interconnects.
[Conference paper] 45th European Conference on Optical Communication, ECOC 2019; Dublin; Ireland; 22-26 September 2019; IET Conference Publications [Details]
Pang, X.; Ozolins, O.; Zhang, L.; Udalcovs, A.; Lin, R.; Schatz, R.; Westergren, U.; Xiao, S.; Hu, W.; Jacobsen, G.; Popov, S.; Chen, J. (2019):
Beyond 200 Gbps per Lane Intensity Modulation Direct Detection (IM/DD) Transmissions for Optical Interconnects - Challenges and Recent Developments.
[Conference paper] 2019 Optical Fiber Communications Conference and Exhibition, OFC 2019; San Diego; United States; 3 March 2019 through 7 March 2019; 2019 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC) [Details]
Zhang, L.; Van Kerrebrouck, J.; Lin, R.; Pang, X.; Udalcovs, A.; Ozolins, O.; Spiga, S.; Amann, M.; Van Steenberge, G.; Gan, L.; Tang, M.; Fu, S.; Schatz, R.; Popov, S.; Liu, D.; Tong, W.; Xiao, S.; Torfs, G.; Chen, J.; Bauwelinck, J.; Yin, X. (2019):
Nonlinearity Tolerant High-Speed DMT Transmission With 1.5-mu m Single-Mode VCSEL and Multi-Core Fibers for Optical Interconnects.
Journal of Lightwave Technology 37: 380-388 [Details]
Van Kerrebrouck, J.; Pang, X.; Ozolins, O.; Lin, R.; Udalcovs, A.; Zhang, L.; Li, H.; Spiga, S.; Amann, M.; Gan, L.; Tang, M.; Fu, S.; Schatz, R.; Jacobsen, G.; Popov, S.; Liu, D.; Tong, W.; Torfs, G.; Bauwelinck, J.; Chen, J.; Yin, X. (2019):
High-Speed PAM4-Based Optical SDM Interconnects With Directly Modulated Long-Wavelength VCSEL.
Journal of Lightwave Technology 37: 356-362 [Details]

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