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Pang, X., Zhang, L., Ozolins, O., Udalcovs, A., Lin, R., Schats, R., . . . Chen, J. (2019). Key technologies to enable terabit-scale digital radio-over-fiber systems. In: Proceedings of SPIE - The International Society for Optical Engineering: . Paper presented at Broadband Access Communication Technologies XIII 2019, 4 February 2019 through 5 February 2019.
Open this publication in new window or tab >>Key technologies to enable terabit-scale digital radio-over-fiber systems
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2019 (English)In: Proceedings of SPIE - The International Society for Optical Engineering, 2019Conference paper, Published paper (Refereed)
Abstract [en]

With the approach of the 5G era, stringent requirements are imposed on the data transport solutions, including both of the supported transmission reach and the capacity. Radio-over-fiber technologies are considered to be promising candidates to cope with both aspects, owing to the low-loss and broad-bandwidth nature of the optical fibers. Meanwhile with such optical transport solutions, signals can be collected from the distributed remote radio sites and processed in a centralized manner. In this report, we target on the digital radio-over-fiber systems, and discuss about several key technologies, focusing on the aspects of coding and transmission, which could potentially enable terabit-scale data transport.

Keywords
coding, Digital radio-over-fiber, fiber optics communications, modulation, radio frequency photonics, 5G mobile communication systems, Optical fibers, Radio transmission, Radio-over-fiber, Broad bandwidths, Fiber optics communication, Key technologies, Optical transport, Radio-over-fiber technology, Stringent requirement, Digital radio
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-38232 (URN)10.1117/12.2509281 (DOI)2-s2.0-85062497561 (Scopus ID)9781510625327 (ISBN)
Conference
Broadband Access Communication Technologies XIII 2019, 4 February 2019 through 5 February 2019
Note

; Funding details: Göran Gustafssons Stiftelse för Naturvetenskaplig och Medicinsk Forskning; Funding details: Vetenskapsrådet; Funding details: VINNOVA; Funding details: Stiftelsen för Strategisk Forskning; Funding details: 752826; Funding details: State Key Laboratory of Advanced Optical Communication Systems and Networks., 2018GZKF03001; Funding details: National Natural Science Foundation of China, 61671212, 61722108, 61775137, 61331010; Funding text 1: This work was partly supported by the EU H2020 MCSA-IF Project NEWMAN (#752826), Swedish Research Council (VR), the Swedish Foundation for Strategic Research (SSF), Göran Gustafsson Foundation, the Swedish ICT-TNG, VINNOVA funded SENDATE-EXTEND and SENDATE-FICUS, National Natural Science Foundation of China (#61331010, 61722108, 61775137, 61671212), SJTU State Key Laboratory of Advanced Optical Communication System and Networks Open project 2018GZKF03001.

Available from: 2019-04-02 Created: 2019-04-02 Last updated: 2019-04-02Bibliographically approved
Jia, S., Pang, X., Ozolins, O., Yu, X., Hu, H., Yu, J., . . . Oxenloewe, L. K. (2018). 0.4 THz Photonic-Wireless Link with 106 Gbit/s Single Channel Bitrate. Journal of Lightwave Technology, 36(2), 610-616
Open this publication in new window or tab >>0.4 THz Photonic-Wireless Link with 106 Gbit/s Single Channel Bitrate
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2018 (English)In: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 36, no 2, p. 610-616Article in journal (Refereed) Published
Abstract [en]

To accommodate the demand of exponentially increased global wireless data traffic, the prospective data rates for wireless communication in the market place will soon reach 100 Gbit/s and beyond. In the lab environment, wireless transmission throughput has been elevated to the level of over 100 Gbit/s attributed to the development of photonic-assisted millimeter wave (MMW) and THz technologies. However, most of recent demonstrations with over 100 Gbit/s data rates are based on spatial or frequency division multiplexing techniques, resulting in increased system's complexity and energy consumption. Here, we experimentally demonstrate a single channel 0.4 THz photonic-wireless link achieving a net data rate of beyond 100 Gbit/s by using a single pair of THz emitter and receiver, without employing any spatial/frequency division multiplexing techniques. The high throughput up to 106 Gbit/s within a single THz channel is enabled by combining spectrally efficient modulation format, ultra-broadband THz transceiver and advanced digital signal processing (DSP) routine. Besides that, our demonstration from system-wide implementation viewpoint also features high transmission stability, and hence shows its great potential to not only decrease the system's complexity, but also meet the requirements of prospective data rates for bandwidth-hungry short-range wireless applications.

Keywords
Optical amplifiers, Optical attenuators, Optical filters, Optical polarization, Photonics, Radio frequency photonics, single channel, Stimulated emission, THz wireless transmission, ultrafast information processing, Wireless communication, Digital signal processing, Energy utilization, Light amplifiers, Light polarization, Millimeter waves, Modulation, Optical communication, Radio transmission, Signal processing, Wireless telecommunication systems, Single channels, Ultra-fast, Wireless communications, Wireless transmissions, Terahertz waves
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-33157 (URN)10.1109/JLT.2017.2776320 (DOI)2-s2.0-85035814757 (Scopus ID)
Available from: 2018-01-26 Created: 2018-01-26 Last updated: 2019-01-16Bibliographically approved
Oxenløwe, L. K., Jia, S., Pang, X., Ozolins, O., Yu, X., Hu, H., . . . Morioka, T. (2018). 100s gigabit/s THz communication. In: Optics InfoBase Conference Papers: . Paper presented at Conference on Lasers and Electro-Optics OSA Technical Digest (online) (Optical Society of America, 2018), paper STu3D.1 CLEO: Science and Innovations, CLEO_SI 2018, 13 May 2018 through 18 May 2018.
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2018 (English)In: Optics InfoBase Conference Papers, 2018Conference paper, Published paper (Refereed)
Abstract [en]

This paper gives an overview of recent progress on the topic of using around 0.4 THz carriers for communications. Experimental demonstrations will be described, and concepts and pros & cons of various system-platforms discussed.

Keywords
Experimental demonstrations, Recent progress, System platforms, THz communications
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-34682 (URN)10.1364/CLEO_SI.2018.STu3D.1 (DOI)2-s2.0-85048969541 (Scopus ID)9781557528209 (ISBN)
Conference
Conference on Lasers and Electro-Optics OSA Technical Digest (online) (Optical Society of America, 2018), paper STu3D.1 CLEO: Science and Innovations, CLEO_SI 2018, 13 May 2018 through 18 May 2018
Available from: 2018-08-15 Created: 2018-08-15 Last updated: 2018-08-15Bibliographically approved
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: Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF) OSA Technical Digest (online) (Optical Society of America, 2018), paper NeTh3F.3: . Paper presented at Photonic Networks and Devices 2018 Zurich Switzerland 2–5 July 2018. , Article ID NeTh3F.3.
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: Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF) OSA Technical Digest (online) (Optical Society of America, 2018), paper NeTh3F.3, 2018, article id NeTh3F.3Conference 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.

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
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-35006 (URN)10.1364/NETWORKS.2018.NeTh3F.3 (DOI)2-s2.0-85051272180 (Scopus ID)9781557528209 (ISBN)
Conference
Photonic Networks and Devices 2018 Zurich Switzerland 2–5 July 2018
Available from: 2018-08-28 Created: 2018-08-28 Last updated: 2019-02-05Bibliographically approved
Ozolins, O., Estaran, J., Udalcovs, A., Jorge, F., Mardoyan, H., Konczykowska, A., . . . Bigo, S. (2018). 140 Gbaud On-Off Keying Links in C-Band for Short-Reach Optical Interconnects. In: : . Paper presented at 2018 European Conference on Optical Communication (ECOC).
Open this publication in new window or tab >>140 Gbaud On-Off Keying Links in C-Band for Short-Reach Optical Interconnects
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2018 (English)Conference paper, Published paper (Refereed)
Abstract [en]

We demonstrate 140 Gbaud intensity modulated direct detection dispersion-uncompensated links with Mach Zehnder modulator and distributed feedback travelling-wave electro-absorption modulator over 5500 and 960 meters of standard single mode fibre, respectively, enabled by compact packaged ultra-high speed InP-based 2:1-Selector.

Keywords
amplitude shift keying, electroabsorption, electro-optical modulation, III-V semiconductors, indium compounds, intensity modulation, optical communication equipment, optical fibre communication, optical interconnections, Mach Zehnder modulator, feedback travelling-wave electro-absorption modulator, standard single mode fibre, short-reach optical interconnects, on-off keying links, intensity modulated direct detection dispersion-uncompensated links, compact packaged ultra-high speed InP based 2:1-Selector, InP, Modulation, Bandwidth, Decision feedback equalizers, Indium phosphide, Erbium-doped fiber amplifiers, III-V semiconductor materials
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-37645 (URN)10.1109/ECOC.2018.8535208 (DOI)
Conference
2018 European Conference on Optical Communication (ECOC)
Available from: 2019-01-29 Created: 2019-01-29 Last updated: 2019-01-29Bibliographically approved
Estarán, J., Mardoyan, H., Jorge, F., Ozolins, O., Udalcovs, A., Konczykowska, A., . . . Bigo, S. (2018). 140/180/204-Gbaud OOK Transceiver for Inter- and Intra-Data Center Connectivity. Journal of Lightwave Technology
Open this publication in new window or tab >>140/180/204-Gbaud OOK Transceiver for Inter- and Intra-Data Center Connectivity
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2018 (English)In: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213Article in journal (Refereed) Epub ahead of print
Abstract [en]

We report on an on-off keying intensity-modulation and direct-detection C-band optical transceiver capable of addressing all datacenter interconnect environments at well-beyond 100Gbaud. For this, the transmitter makes use of two key InP technologies: a 2:1 double heterojunction bipolar transistor selector multiplexer and a monolithically integrated distributed-feedback laser traveling-wave electro-absorption modulator, both exceeding 100-GHz of 3-dB analog bandwidth. A pre-amplified 110-GHz PIN photodiode prior to a 100-GHz analog-to-digital converter complete the ultra-high bandwidth transceiver module; the device under study. In the experimental work, which discriminates between intra- and inter-data center scenarios (dispersion unmanaged 120, 560, 960m; and dispersion-managed 10, and 80km of standard singlemode fiber), we evaluate the bit-error rate evolution against the received optical power at 140, 180, and 204Gbaud on-off keying for different equalization configurations (adaptive linear filter with and without the help of short-memory sequence estimation) and forward error correction schemes (hard-decision codes with 7% and 20% overhead); drawing conclusions from the observed system-level limitations of the respective environments at this ultra-high baudrate, as well as from the operation margins and sensitivity metrics. From the demonstration, we highlight three results: successful operation with >6-dB sensitivity margin below the 7% error-correction at 140Gbaud over the entire 100m-80km range with only linear feed-forward equalization. Then the transmission of a 180Gbaud on-off-keying carrier over 80km considering 20% error-correction overhead. And finally, 10-km communication at 204Gbaud on-off keying with up to 6dB sensitivity margin, and regular 7%-overhead error-correction.

Keywords
Modulation, Transceivers, Indium phosphide, III-V semiconductor materials, Bandwidth, Optical fiber dispersion, Distributed feedback devices, Data center interconnects, electro-absorption modulation, InP, integrated circuits, optical fiber communication, very high-speed modulation
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-37642 (URN)10.1109/JLT.2018.2876732 (DOI)
Available from: 2019-01-29 Created: 2019-01-29 Last updated: 2019-01-29Bibliographically approved
Mardoyan, H., Jorge, F., Ozolins, O., Estaran, J. M., Udalcovs, A., Konczykowska, A., . . . Bigo, S. (2018). 204-GBaud On-Off Keying Transmitter for Inter-Data Center Communications. In: Optical Fiber Communication Conference Postdeadline Papers OSA Technical Digest (online) (Optical Society of America, 2018), paper Th4A.4: . Paper presented at Optical Fiber Communication Conference 2018 San Diego, California United States 11–15 March 2018. , Article ID Th4A.4.
Open this publication in new window or tab >>204-GBaud On-Off Keying Transmitter for Inter-Data Center Communications
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2018 (English)In: Optical Fiber Communication Conference Postdeadline Papers OSA Technical Digest (online) (Optical Society of America, 2018), paper Th4A.4, 2018, article id Th4A.4Conference paper, Published paper (Refereed)
Abstract [en]

We demonstrate 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.

Keywords
amplitude shift keying, electroabsorption, electro-optical modulation, III-V semiconductors, indium compounds, light absorption, optical transmitters, travelling-wave electro-absorption laser-modulator, travelling-wave electroabsorption laser-modulator, interdata center communications, high-speed InP-based 2:1 selector, on-off keying transmitter, InP, Indium phosphide, III-V semiconductor materials, Bandwidth, DH-HEMTs, Optical filters, Adaptive optics
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-35252 (URN)10.1364/OFC.2018.Th4A.4 (DOI)2-s2.0-85047130701 (Scopus ID)978-1-943580-39-2 (ISBN)
Conference
Optical Fiber Communication Conference 2018 San Diego, California United States 11–15 March 2018
Available from: 2018-10-15 Created: 2018-10-15 Last updated: 2019-01-07Bibliographically approved
Pang, X., Kerrebrouck, J. V., 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: Optical Fiber Communication Conference OSA Technical Digest (online) (Optical Society of America, 2018), paper M1I.4: . Paper presented at 2018 Optical Fiber Communications Conference and Exposition, OFC 2018; San Diego; United States; 11 March 2018 through 15 March 2018.
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: Optical Fiber Communication Conference OSA Technical Digest (online) (Optical Society of America, 2018), paper M1I.4, 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.

Keywords
laser cavity resonators, optical communication equipment, optical fibre communication, optical information processing, optical modulation, pulse amplitude modulation, surface emitting lasers, single mode VCSEL, modulation bandwidth, 100 Gbps/λ/core PAM-4 transmission, single mode sever-core fiber links, post-digital equalizations, pre-digital equalizations, bandwidth 23.0 GHz, Vertical cavity surface emitting lasers, Optical fibers, Optical fiber communication, Optical fiber dispersion, Adaptive optics, Optical fiber cables, Decision feedback equalizers
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-35246 (URN)10.1364/OFC.2018.M1I.4 (DOI)2-s2.0-85047122570 (Scopus ID)978-1-943580-38-5 (ISBN)
Conference
2018 Optical Fiber Communications Conference and Exposition, OFC 2018; San Diego; United States; 11 March 2018 through 15 March 2018
Available from: 2018-10-15 Created: 2018-10-15 Last updated: 2019-03-28Bibliographically 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: Conference on Lasers and Electro-Optics OSA Technical Digest (online) (Optical Society of America, 2018), paper SM4C.4: . Paper presented at CLEO: Science and Innovations 2018 San Jose, California United States 13–18 May 2018.
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: Conference on Lasers and Electro-Optics OSA Technical Digest (online) (Optical Society of America, 2018), paper SM4C.4, 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.

Keywords
Optical interconnects, Multicore fiber, Single fiber, Single wavelength, Pulse amplitude modulation
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-34685 (URN)10.1364/CLEO_SI.2018.SM4C.4 (DOI)2-s2.0-85048973061 (Scopus ID)9781557528209 (ISBN)
Conference
CLEO: Science and Innovations 2018 San Jose, California United States 13–18 May 2018
Available from: 2018-08-14 Created: 2018-08-14 Last updated: 2019-02-05Bibliographically approved
Kerrebrouck, J. V., 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: : . Paper presented at ptical Fiber Communication Conference OSA Technical Digest (online) (Optical Society of America, 2018), paper M1I.2. , Article ID M1I.2.
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)Conference 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 23 GHz. We experimentally demonstrated a total net-rate up to 726.7Gb/s at 1.5μm over 2.5km 7-core dispersion-uncompensated MCF.

Keywords
amplitude shift keying, differential phase shift keying, optical fibre communication, optical modulation, net-rate DMT optical signal, long-wavelength VCSEL, 7-core dispersion-uncompensated MCF, multicore fiber, single-mode VCSEL discrete multitone transmission, bandwidth 23.0 GHz, Vertical cavity surface emitting lasers, Optical fibers, Optical attenuators, Optical filters, Optical fiber dispersion, Optical amplifiers
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-34336 (URN)10.1364/OFC.2018.M1I.2 (DOI)2-s2.0-85050025098 (Scopus ID)978-1-943580-38-5 (ISBN)
Conference
ptical Fiber Communication Conference OSA Technical Digest (online) (Optical Society of America, 2018), paper M1I.2
Available from: 2018-08-07 Created: 2018-08-07 Last updated: 2019-03-28Bibliographically approved
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-9839-7488

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