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Publications (10 of 169) Show all publications
Ozolins, O., Udalcovs, A., Pang, X., Lin, R., Djupsjöbacka, A., Mårtensson, J., . . . Jacobsen, G. (2018). 112 Gbps/λ PAM4 inter-DCI with continuous-fiber Bragg grating based dispersion compensators. In: Optics InfoBase Conference Papers: . Paper presented at Photonic Networks and Devices, Networks 2018, 2 July 2018 through 5 July 2018. OSA - The Optical Society
Open this publication in new window or tab >>112 Gbps/λ PAM4 inter-DCI with continuous-fiber Bragg grating based dispersion compensators
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2018 (English)In: Optics InfoBase Conference Papers, OSA - The Optical Society , 2018Conference paper, Published paper (Refereed)
Abstract [en]

We demonstrate 56 Gbaud/λ PAM4 inter - data center interconnects over 81 km single core single mode fiber and 33.6 km 7-core single mode fiber with continuous-fiber Bragg grating based chromatic dispersion compensators covering C-band.

Place, publisher, year, edition, pages
OSA - The Optical Society, 2018
Keywords
Chromatic dispersion, Fiber Bragg gratings, Fibers, Photonic devices, Photonics, Pulse amplitude modulation, C-bands, Chromatic dispersion compensators, Continuous fibers, Data centers, Dispersion compensator, Single mode fibers
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-236422 (URN)10.1364/NETWORKS.2018.NeTh3F.3 (DOI)2-s2.0-85051272180 (Scopus ID)9781557528209 (ISBN)
Conference
Photonic Networks and Devices, Networks 2018, 2 July 2018 through 5 July 2018
Note

QC 20181025

Available from: 2018-10-26 Created: 2018-10-26 Last updated: 2018-10-26Bibliographically approved
Zhang, L., Pang, X., Ozolins, O., Udalcovs, A., Schatz, R., Westergren, U., . . . Chen, J. (2018). 15-Gbaud PAM4 Digital Mobile Fronthaul with Enhanced Differential Pulse Coding Modulation Supporting 122 LTE-A Channels with up to 4096QAM. In: 2017 European Conference on Optical Communication (ECOC): . Paper presented at 43rd European Conference on Optical Communication, ECOC 2017, Gothenburg, Sweden, 17 September 2017 through 21 September 2017 (pp. 1-3). Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>15-Gbaud PAM4 Digital Mobile Fronthaul with Enhanced Differential Pulse Coding Modulation Supporting 122 LTE-A Channels with up to 4096QAM
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2018 (English)In: 2017 European Conference on Optical Communication (ECOC), Institute of Electrical and Electronics Engineers (IEEE), 2018, p. 1-3Conference paper, Published paper (Refereed)
Abstract [en]

By employing enhanced DPCM, 15-Gbaud PAM4 digital mobile fronthaul is experimentally demonstrated to support 122 LTE-A channels with up to 4096QAM. Compared to PCM based CPRI, the supported number of channels increases 5 times and EVM is obviously improved.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-228555 (URN)10.1109/ECOC.2017.8346198 (DOI)000434969300372 ()2-s2.0-85046939372 (Scopus ID)9781538656242 (ISBN)
Conference
43rd European Conference on Optical Communication, ECOC 2017, Gothenburg, Sweden, 17 September 2017 through 21 September 2017
Funder
Swedish Foundation for Strategic Research Swedish Research CouncilGöran Gustafsson Foundation for Research in Natural Sciences and Medicine
Note

QC 20180528

Available from: 2018-05-28 Created: 2018-05-28 Last updated: 2018-08-28Bibliographically approved
Pang, X., Van Kerrebrouck, J., Ozolins, O., Lin, R., Udalcovs, A., Zhang, L., . . . Chen, J. (2018). 7×100 Gbps PAM-4 transmission over 1-km and 10-km single mode 7-core fiber using 1.5-μm SM-VCSEL. In: Optics InfoBase Conference Papers: . Paper presented at Optical Fiber Communication Conference, OFC 2018, 11 March 2017 through 15 March 2017. Optical Society of America
Open this publication in new window or tab >>7×100 Gbps PAM-4 transmission over 1-km and 10-km single mode 7-core fiber using 1.5-μm SM-VCSEL
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2018 (English)In: Optics InfoBase Conference Papers, Optical Society of America, 2018Conference paper, Published paper (Refereed)
Abstract [en]

100 Gbps/λ/core PAM-4 transmission is successfully demonstrated over 1-km and 10- km single mode 7-core fiber links, enabled by directly modulated 1.5-μm single mode VCSEL of 23 GHz modulation bandwidth with pre- and post- digital equalizations.

Place, publisher, year, edition, pages
Optical Society of America, 2018
Keywords
Optical fibers, Pulse amplitude modulation, Digital equalization, Directly modulated, Fiber links, Modulation bandwidth, Single mode, Single mode VCSEL, Optical fiber communication
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-236374 (URN)10.1364/OFC.2018.M1I.4 (DOI)2-s2.0-85047122570 (Scopus ID)9781557528209 (ISBN)
Conference
Optical Fiber Communication Conference, OFC 2018, 11 March 2017 through 15 March 2017
Note

QC 20181105

Available from: 2018-11-05 Created: 2018-11-05 Last updated: 2018-11-05Bibliographically approved
Ozolins, O., Pang, X., Udalcovs, A., Lin, R., Van Kerrebrouck, J., Gan, L., . . . Yin, X. (2018). 7×149 Gbit/s PAM4 transmission over 1 km multicore fiber for short-reach optical interconnects. In: Optics InfoBase Conference Papers: . Paper presented at CLEO: Science and Innovations, CLEO_SI 2018, 13 May 2018 through 18 May 2018. Optics Info Base, Optical Society of America
Open this publication in new window or tab >>7×149 Gbit/s PAM4 transmission over 1 km multicore fiber for short-reach optical interconnects
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2018 (English)In: Optics InfoBase Conference Papers, Optics Info Base, Optical Society of America, 2018Conference paper, Published paper (Refereed)
Abstract [en]

We transmit 80 Gbaud/λ/core PAM4 signal enabled by 1.55 μm EML over 1 km 7-core fiber. The solution achieves single-wavelength and single-fiber 1.04 Tbit/s post-FEC transmission enhancing bandwidth-density for short-reach optical interconnects.

Place, publisher, year, edition, pages
Optics Info Base, Optical Society of America, 2018
Keywords
Optical interconnects, Multicore fiber, Single fiber, Single wavelength, Pulse amplitude modulation
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-236408 (URN)10.1364/CLEO_SI.2018.SM4C.4 (DOI)2-s2.0-85048973061 (Scopus ID)9781557528209 (ISBN)
Conference
CLEO: Science and Innovations, CLEO_SI 2018, 13 May 2018 through 18 May 2018
Note

QC 20181031

Available from: 2018-10-31 Created: 2018-10-31 Last updated: 2018-10-31Bibliographically approved
Van Kerrebrouck, J., Zhang, L., Lin, R., Pang, X., Udalcovs, A., Ozolins, O., . . . Yin, X. (2018). 726.7-Gb/s 1.5-mu m Single-Mode VCSEL Discrete Multi-Tone Transmission over 2.5-km Multicore Fiber. In: 2018 Optical Fiber Communications Conference and Exposition, OFC 2018 - Proceedings: . Paper presented at 2018 Optical Fiber Communications Conference and Exposition, OFC 2018, San Diego, United States, 11 March 2018 through 15 March 2018. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>726.7-Gb/s 1.5-mu m Single-Mode VCSEL Discrete Multi-Tone Transmission over 2.5-km Multicore Fiber
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2018 (English)In: 2018 Optical Fiber Communications Conference and Exposition, OFC 2018 - Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2018Conference paper, Published paper (Refereed)
Abstract [en]

A 107Gb/s net-rate DMT optical signal was generated using a single-mode long-wavelength VCSEL with a modulation bandwidth of 23GHz. We experimentally demonstrated a total net-rate up to 726.7Gb/s at 1.5 mu m over 2.5km 7-core dispersion-uncompensated MCF.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-232647 (URN)000437286300048 ()9781943580385 (ISBN)
Conference
2018 Optical Fiber Communications Conference and Exposition, OFC 2018, San Diego, United States, 11 March 2018 through 15 March 2018
Note

QC 20180802

Available from: 2018-08-02 Created: 2018-08-02 Last updated: 2018-08-02Bibliographically approved
Van Kerrebrouck, J., Zhang, L., Lin, R., Pang, X., Udalcovs, A., Ozolins, O., . . . Yin, X. (2018). 726.7-Gb/s 1.5-μm single-mode VCSEL discrete multi-tone transmission over 2.5-km multicore fiber. In: Optics InfoBase Conference Papers: . Paper presented at Optical Fiber Communication Conference, OFC 2018, San Diego, United States, 11 March 2017 through 15 March 2017. Optics Info Base, Optical Society of America
Open this publication in new window or tab >>726.7-Gb/s 1.5-μm single-mode VCSEL discrete multi-tone transmission over 2.5-km multicore fiber
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2018 (English)In: Optics InfoBase Conference Papers, Optics Info Base, Optical Society of America, 2018Conference paper, Published paper (Refereed)
Abstract [en]

A 107Gb/s net-rate DMT optical signal was generated using a single-mode longwavelength VCSEL with a modulation bandwidth of 23GHz. We experimentally demonstrated a total net-rate up to 726.7Gb/s at 1.5μm over 2.5km 7-core dispersion-uncompensated MCF.

Place, publisher, year, edition, pages
Optics Info Base, Optical Society of America, 2018
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-228667 (URN)10.1364/OFC.2018.M1I.2 (DOI)2-s2.0-85047127923 (Scopus ID)9781557528209 (ISBN)
Conference
Optical Fiber Communication Conference, OFC 2018, San Diego, United States, 11 March 2017 through 15 March 2017
Note

QC 20180529

Available from: 2018-05-29 Created: 2018-05-29 Last updated: 2018-05-29Bibliographically approved
Pang, X., Van Kerrebrouck, J., Ozolins, O., Lin, R., Udalcovs, A., Zhang, L., . . . Chen, J. (2018). 7x100 Gbps PAM-4 Transmission over 1-km and 10-km Single Mode 7-core Fiber using 1.5-mu m SM-VCSEL. In: 2018 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC): . Paper presented at Optical Fiber Communications Conference and Exposition (OFC),San Diego, CA, MAR 11-15, 2018. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>7x100 Gbps PAM-4 Transmission over 1-km and 10-km Single Mode 7-core Fiber using 1.5-mu m SM-VCSEL
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2018 (English)In: 2018 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC), Institute of Electrical and Electronics Engineers (IEEE), 2018Conference paper, Published paper (Refereed)
Abstract [en]

100 Gbps/lambda/core PAM-4 transmission is successfully demonstrated over 1-km and 10km single mode 7-core fiber links, enabled by directly modulated 1.5-mu m single mode VCSEL of 23 GHz modulation bandwidth with pre-and post-digital equalizations.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-232644 (URN)000437286300050 ()9781943580385 (ISBN)
Conference
Optical Fiber Communications Conference and Exposition (OFC),San Diego, CA, MAR 11-15, 2018
Funder
Swedish Research CouncilSwedish Foundation for Strategic Research EU, FP7, Seventh Framework Programme, 318228EU, Horizon 2020, 688572VINNOVA, C2015/3-5
Note

QC 20180802

Available from: 2018-08-02 Created: 2018-08-02 Last updated: 2018-08-02Bibliographically approved
Pang, X., Van Kerrebrouck, J., Ozolins, O., Lin, R., Udalcovs, A., Zhang, L., . . . Chen, J. (2018). High-speed SDM interconnects with directly-modulated 1.5-μm VCSEL enabled by low-complexity signal processing techniques. In: Optics InfoBase Conference Papers: . Paper presented at Signal Processing in Photonic Communications, SPPCom 2018, 2 July 2018 through 5 July 2018. OSA - The Optical Society
Open this publication in new window or tab >>High-speed SDM interconnects with directly-modulated 1.5-μm VCSEL enabled by low-complexity signal processing techniques
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2018 (English)In: Optics InfoBase Conference Papers, OSA - The Optical Society , 2018Conference paper, Published paper (Refereed)
Abstract [en]

We report on our recent work in supporting up to 100 Gbps/λ/core transmissions with a directly modulated 1.5-μm single mode VCSEL and multicore fiber, enabled by low-compleixty pre- and post- digital equalizations.

Place, publisher, year, edition, pages
OSA - The Optical Society, 2018
Keywords
Space division multiple access, Digital equalization, Directly modulated, High Speed, Multicore fiber, Signal processing technique, Single mode VCSEL, Signal processing
National Category
Interaction Technologies
Identifiers
urn:nbn:se:kth:diva-236444 (URN)10.1364/SPPCom.2018.SpTh2G.4 (DOI)2-s2.0-85051272122 (Scopus ID)9781557528209 (ISBN)
Conference
Signal Processing in Photonic Communications, SPPCom 2018, 2 July 2018 through 5 July 2018
Note

QC 20181022

Available from: 2018-10-22 Created: 2018-10-22 Last updated: 2018-10-22Bibliographically approved
Udalcovs, A., Pang, X., Ozolins, O., Lin, R., Gan, L., Schatz, R., . . . Jacobsen, G. (2018). MCF-enabled self-homodyne 16/64QAM transmission for SDM optical access networks. In: Optics InfoBase Conference Papers: . Paper presented at CLEO: Science and Innovations, CLEO_SI 2018, 13 May 2018 through 18 May 2018. OSA - The Optical Society
Open this publication in new window or tab >>MCF-enabled self-homodyne 16/64QAM transmission for SDM optical access networks
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2018 (English)In: Optics InfoBase Conference Papers, OSA - The Optical Society , 2018Conference paper, Published paper (Refereed)
Abstract [en]

We experimentally demonstrate a 28-Gbaud circular and square 16/64QAM transmission over a 33.6-km long seven-core fiber with the LO passed through one of the cores for self-homodyne coherent detection employing a low-complexity digital signal processing.

Place, publisher, year, edition, pages
OSA - The Optical Society, 2018
Keywords
Digital signal processing, Light transmission, Coherent detection, Optical access networks, Self-homodyne, Space division multiple access
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-236445 (URN)10.1364/CLEO_SI.2018.SM4C.5 (DOI)2-s2.0-85048990561 (Scopus ID)9781557528209 (ISBN)
Conference
CLEO: Science and Innovations, CLEO_SI 2018, 13 May 2018 through 18 May 2018
Note

QC 20181022

Available from: 2018-10-22 Created: 2018-10-22 Last updated: 2018-10-22Bibliographically approved
Zhang, L., Hong, X., Pang, X., Ozolins, O., Udalcovs, A., Schatz, R., . . . Chen, J. (2018). Nonlinearity-aware 200 Gbit/s DMT transmission for C-band short-reach optical interconnects with a single packaged electro-absorption modulated laser. Optics Letters, 43(2), 182-185
Open this publication in new window or tab >>Nonlinearity-aware 200 Gbit/s DMT transmission for C-band short-reach optical interconnects with a single packaged electro-absorption modulated laser
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2018 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 43, no 2, p. 182-185Article in journal (Refereed) Published
Abstract [en]

We experimentally demonstrate the transmission of a 200 Gbit/s discrete multitone (DMT) at the soft forward error correction limit in an intensity-modulation directdetection system with a single C-band packaged distributed feedback laser and traveling-wave electro absorption modulator (DFB-TWEAM), digital-to-analog converter and photodiode. The bit-power loaded DMT signal is transmitted over 1.6 km standard single-mode fiber with a net rate of 166.7 Gbit/s, achieving an effective electrical spectrum efficiency of 4.93 bit/s/Hz. Meanwhile, net rates of 174.2 Gbit/s and 179.5 Gbit/s are also demonstrated over 0.8 km SSMF and in an optical back-to-back case, respectively. The feature of the packaged DFB-TWEAM is presented. The nonlinearity-aware digital signal processing algorithm for channel equalization is mathematically described, which improves the signal-to-noise ratio up to 3.5 dB. 

Place, publisher, year, edition, pages
OPTICAL SOC AMER, 2018
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-221927 (URN)10.1364/OL.43.000182 (DOI)000422801600005 ()29328233 (PubMedID)2-s2.0-85040313909 (Scopus ID)
Note

QC 20180130

Available from: 2018-01-30 Created: 2018-01-30 Last updated: 2018-02-02Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-3056-4678

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