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Publikasjoner (8 av 8) Visa alla publikasjoner
Xue, L., Yi, L., Zhang, L., Ozolins, O., Udalcovs, A., Pang, X. & Chen, J. (2019). 50-Gb/s Dispersion-unmanaged DMT Transmission with Injection Locked 10G-class 1.55-mu m DML. In: 2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO): . Paper presented at Conference on Lasers and Electro-Optics (CLEO), MAY 05-10, 2019, San Jose, CA. Optical Society of America
Åpne denne publikasjonen i ny fane eller vindu >>50-Gb/s Dispersion-unmanaged DMT Transmission with Injection Locked 10G-class 1.55-mu m DML
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2019 (engelsk)Inngår i: 2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), Optical Society of America, 2019Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

We demonstrate 50-Gb/s DMT signal transmission over 20-km SMF by using a 10G-class 1.55-mu m DML without optical dispersion compensation. Injection locking technique is introduced, which doubles system bandwidth and greatly suppresses DML chirp.

sted, utgiver, år, opplag, sider
Optical Society of America, 2019
Serie
Conference on Lasers and Electro-Optics, ISSN 2160-9020
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-259472 (URN)10.1364/CLEO_SI.2019.SW4O.2 (DOI)000482226302139 ()2-s2.0-85068112123 (Scopus ID)978-1-943580-57-6 (ISBN)
Konferanse
Conference on Lasers and Electro-Optics (CLEO), MAY 05-10, 2019, San Jose, CA
Merknad

QC 20190917

Tilgjengelig fra: 2019-09-17 Laget: 2019-09-17 Sist oppdatert: 2019-09-17bibliografisk kontrollert
Deniel, L., Gay, M., Perez Galacho, D., Baudot, C., Bramerie, L., Ozolins, O., . . . Marris-Morini, D. (2019). DAC-less PAM-4 generation in the O-band using a silicon Mach-Zehnder modulator. Optics Express, 27(7), 9740-9748
Åpne denne publikasjonen i ny fane eller vindu >>DAC-less PAM-4 generation in the O-band using a silicon Mach-Zehnder modulator
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2019 (engelsk)Inngår i: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 27, nr 7, s. 9740-9748Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We demonstrate 20-Gb/s 4-level pulse amplitude modulation (PAM-4) signal generation using a silicon Mach-Zehnder modulator (MZM) in the O-band. The modulator is driven by two independent binary streams. and the PAM-4 signal is thus generated directly on the chip, avoiding the use of power-hungry digital-to-analog converters (DACs). With optimized amplitude levels of the binary signals applied to the two arms of the MZM, a pre-forward error correction (FEC) bit-error rate (BER) as low as 7.6 x 10(-7) is obtained. In comparison with a commercially available LiNbO3 modulator, the penalty is only 2 dB at the KP4 FEC threshold of 2.2 x 10(-4).

sted, utgiver, år, opplag, sider
OPTICAL SOC AMER, 2019
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-252407 (URN)10.1364/OE.27.009740 (DOI)000466708200039 ()31045123 (PubMedID)2-s2.0-85064404091 (Scopus ID)
Merknad

QC 20190716

Tilgjengelig fra: 2019-07-16 Laget: 2019-07-16 Sist oppdatert: 2019-07-16bibliografisk kontrollert
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: Broadband Access Communication Technologies XIII: . Paper presented at Broadband Access Communication Technologies XIII 2019; San Francisco; United States; 4 February 2019 through 5 February 2019. SPIE - International Society for Optical Engineering, 10945, Article ID 109450E.
Åpne denne publikasjonen i ny fane eller vindu >>Key technologies to enable terabit-scale digital radio-over-fiber systems
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2019 (engelsk)Inngår i: Broadband Access Communication Technologies XIII, SPIE - International Society for Optical Engineering, 2019, Vol. 10945, artikkel-id 109450EKonferansepaper, Publicerat paper (Fagfellevurdert)
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.

sted, utgiver, år, opplag, sider
SPIE - International Society for Optical Engineering, 2019
Serie
Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X ; 10945
Emneord
coding, Digital radio-over-fiber, fiber optics communications, modulation, radio frequency photonics
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-251913 (URN)10.1117/12.2509281 (DOI)000465823300012 ()2-s2.0-85062497561 (Scopus ID)9781510625327 (ISBN)
Konferanse
Broadband Access Communication Technologies XIII 2019; San Francisco; United States; 4 February 2019 through 5 February 2019
Merknad

QC 20190523

Tilgjengelig fra: 2019-05-23 Laget: 2019-05-23 Sist oppdatert: 2019-05-23bibliografisk kontrollert
Gyger, S., Zeuner, K. D., Jöns, K. D., Elshaari, A. W., Paul, M., Popov, S., . . . Zwiller, V. (2019). Reconfigurable frequency coding of triggered single photons in the telecom C-band. Optics Express, 27(10), 14400-14406
Åpne denne publikasjonen i ny fane eller vindu >>Reconfigurable frequency coding of triggered single photons in the telecom C-band
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2019 (engelsk)Inngår i: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 27, nr 10, s. 14400-14406Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this work, we demonstrate reconfigurable frequency manipulation of quantum states of light in the telecom C-band. Triggered single photons are encoded in a superposition state of three channels using sidebands up to 53 GHz created by an off-the-shelf phase modulator. The single photons are emitted by an InAs/GaAs quantum dot grown by metal-organic vapor-phase epitaxy within the transparency window of the backbone fiber optical network. A cross-correlation measurement of the sidebands demonstrates the preservation of the single photon nature; an important prerequisite for future quantum technology applications using the existing telecommunication fiber network.

sted, utgiver, år, opplag, sider
Optical Society of America, 2019
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-253738 (URN)10.1364/OE.27.014400 (DOI)000469220500072 ()31163890 (PubMedID)2-s2.0-85065830027 (Scopus ID)
Merknad

QC 20190617

Tilgjengelig fra: 2019-06-17 Laget: 2019-06-17 Sist oppdatert: 2019-10-14bibliografisk kontrollert
Zhang, L., Udalcovs, A., Lin, R., Ozolins, O., Pang, X., Gan, L., . . . Chen, J. (2019). Toward Terabit Digital Radio over Fiber Systems: Architecture and Key Technologies. IEEE Communications Magazine, 57(4), 131-137
Åpne denne publikasjonen i ny fane eller vindu >>Toward Terabit Digital Radio over Fiber Systems: Architecture and Key Technologies
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2019 (engelsk)Inngår i: IEEE Communications Magazine, ISSN 0163-6804, E-ISSN 1558-1896, Vol. 57, nr 4, s. 131-137Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

To support massive deployment of broadband radio applications, such as 5G and high-definition videos for terrestrial televisions, large system capacity and high spectrum efficiency are highly demanded in radio over fiber (RoF) systems. In this article, we propose a terabit digital RoF system capable of providing high-speed transmission, where multicore fiber (MCF) is introduced for the access segment between the central unit and remote unit. Two key technologies that greatly enhance system capacity and spectrum efficiency, namely MCF enabled self-homodyne detection and compressed quantization, are demonstrated.

sted, utgiver, år, opplag, sider
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2019
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-252405 (URN)10.1109/MCOM.2019.1800426 (DOI)000466916300020 ()2-s2.0-85065453398 (Scopus ID)
Merknad

QC 20190716

Tilgjengelig fra: 2019-07-16 Laget: 2019-07-16 Sist oppdatert: 2019-07-16bibliografisk kontrollert
Zhang, L., Udalcovs, A., Lin, R., Ozolins, O., Pang, X., Gan, L., . . . Chen, J. (2018). Digital Radio-Over-Multicore-Fiber System with Self-Homodyne Coherent Detection and Entropy Coding for Mobile Fronthaul. In: European Conference on Optical Communication, ECOC: . Paper presented at 2018 European Conference on Optical Communication, ECOC 2018, 23 September 2018 through 27 September 2018. Institute of Electrical and Electronics Engineers Inc.
Åpne denne publikasjonen i ny fane eller vindu >>Digital Radio-Over-Multicore-Fiber System with Self-Homodyne Coherent Detection and Entropy Coding for Mobile Fronthaul
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2018 (engelsk)Inngår i: European Conference on Optical Communication, ECOC, Institute of Electrical and Electronics Engineers Inc. , 2018Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

We experimentally demonstrate a 28-Gbaud 16-QAM self-homodyne digital radio-over-33.6km-7-core-fiber system with entropy coding for mobile fronthaul, achieving error-free carrier aggregation of 330 100-MHz 4096-QAM 5G-new-radio channels and 921 100-MHz QPSK 5G-new-radio channels with CPRI-equivalent data rate up to 3.73-Tbit/s.

sted, utgiver, år, opplag, sider
Institute of Electrical and Electronics Engineers Inc., 2018
Emneord
5G mobile communication systems, Entropy, Homodyne detection, Optical communication, Coherent detection, Data rates, Entropy coding, Fiber systems, Free carriers, Multicore fiber, Radio channels, Self-homodyne, Digital radio
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-252257 (URN)10.1109/ECOC.2018.8535281 (DOI)2-s2.0-85062566010 (Scopus ID)9781538648629 (ISBN)
Konferanse
2018 European Conference on Optical Communication, ECOC 2018, 23 September 2018 through 27 September 2018
Merknad

QC20190610

Tilgjengelig fra: 2019-06-10 Laget: 2019-06-10 Sist oppdatert: 2019-11-12bibliografisk kontrollert
Udalcovs, A., Schatz, R., Monti, P., Ozolins, O., Pang, X., Navarro, J. R. G., . . . Jacobsen, G. (2017). Quantifying spectral and energy efficiency limitations of WDM networks due to crosstalk in optical nodes. In: Optics InfoBase Conference Papers: . Paper presented at Asia Communications and Photonics Conference, ACPC 2017, 10 November 2017 through 13 November 2017. OSA - The Optical Society
Åpne denne publikasjonen i ny fane eller vindu >>Quantifying spectral and energy efficiency limitations of WDM networks due to crosstalk in optical nodes
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2017 (engelsk)Inngår i: Optics InfoBase Conference Papers, OSA - The Optical Society , 2017Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

We demonstrate the significant impact of crosstalk between add and drop ports at optical nodes on energy-efficiency per Hertz in WDM networks employing 32/64 Gbd DP-16QAM transmission, especially when the isolation is reduced to 30dB.

sted, utgiver, år, opplag, sider
OSA - The Optical Society, 2017
Emneord
Crosstalk, Photonics, Efficiency limitations, WDM networks, Energy efficiency
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-227817 (URN)10.1364/ACPC.2017.M3C.3 (DOI)2-s2.0-85041640725 (Scopus ID)9781557528209 (ISBN)
Konferanse
Asia Communications and Photonics Conference, ACPC 2017, 10 November 2017 through 13 November 2017
Merknad

QC 20180528

Tilgjengelig fra: 2018-05-28 Laget: 2018-05-28 Sist oppdatert: 2018-10-19bibliografisk kontrollert
Pang, X., Rodrigo Navarro, J., Kakkar, A., Olmedo, M. I., Ozolins, O., Schatz, R., . . . Jacobsen, G. (2016). Advanced Modulations and DSP Enabling High-speed Coherent Communication Using Large Linewidth Lasers. In: 2016 PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM (PIERS): . Paper presented at Progress in Electromagnetic Research Symposium (PIERS), AUG 08-11, 2016, Shanghai, PEOPLES R CHINA (pp. 4849-4849). IEEE
Åpne denne publikasjonen i ny fane eller vindu >>Advanced Modulations and DSP Enabling High-speed Coherent Communication Using Large Linewidth Lasers
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2016 (engelsk)Inngår i: 2016 PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM (PIERS), IEEE , 2016, s. 4849-4849Konferansepaper, Publicerat paper (Fagfellevurdert)
sted, utgiver, år, opplag, sider
IEEE, 2016
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-207936 (URN)000400013904126 ()978-1-5090-6093-1 (ISBN)
Konferanse
Progress in Electromagnetic Research Symposium (PIERS), AUG 08-11, 2016, Shanghai, PEOPLES R CHINA
Merknad

QC 20170529

Tilgjengelig fra: 2017-05-29 Laget: 2017-05-29 Sist oppdatert: 2017-11-10bibliografisk kontrollert
Organisasjoner
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0001-9839-7488