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Iglesias Olmedo, MiguelORCID iD iconorcid.org/0000-0002-8543-4531
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Publications (10 of 15) Show all publications
Ozolins, O., Pang, X., Iglesias Olmedo, M., Kakkar, A., Udalcovs, A., Gaiarin, S., . . . Jacobsen, G. (2017). 100 GHz Externally Modulated Laser for Optical Interconnects. Journal of Lightwave Technology, 35(6), 1174-1179
Open this publication in new window or tab >>100 GHz Externally Modulated Laser for Optical Interconnects
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2017 (English)In: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 35, no 6, p. 1174-1179Article in journal (Refereed) Published
Abstract [en]

We report on a 116 Gb/s on-off keying (OOK), four pulse amplitude modulation (PAM) and 105-Gb/s 8-PAM optical transmitter using an InP-based integrated and packaged externally modulated laser for high-speed optical interconnects with up to 30 dB static extinction ratio and over 100-GHz 3-dB bandwidth with 2 dB ripple. In addition, we study the tradeoff between power penalty and equalizer length to foresee transmission distances with standard single mode fiber.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2017
Keywords
Direct detection, distributed feedback laser (DFB), electroabsorption modulator, optical interconnects
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-206702 (URN)10.1109/JLT.2017.2651947 (DOI)000399388500004 ()2-s2.0-85018964493 (Scopus ID)
Note

QC 20170509

Available from: 2017-05-09 Created: 2017-05-09 Last updated: 2018-09-19Bibliographically approved
Ozolins, O., Iglesias Olmedo, M., Pang, X., Gaiarin, S., Kakkar, A., Udalcovs, A., . . . Jacobsen, G. (2016). 100 GHz EML for high speed optical interconnect applications. In: European Conference on Optical Communication, ECOC: . Paper presented at 42nd European Conference on Optical Communication, ECOC 2016, 18 September 2016 through 22 September 2016 (pp. 127-129). Institute of Electrical and Electronics Engineers Inc.
Open this publication in new window or tab >>100 GHz EML for high speed optical interconnect applications
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2016 (English)In: European Conference on Optical Communication, ECOC, Institute of Electrical and Electronics Engineers Inc. , 2016, p. 127-129Conference paper (Refereed)
Abstract [en]

We report on a 116 Gbit/s OOK, 4PAM and 105 Gbit/s 8PAM optical transmitter using InP-based integrated EML for interconnect applications with up to 30 dB static extinction ratio and over 100 GHz 3 dB bandwidth with 2 dB ripple. © VDE VERLAG GMBH. Berlin. Offenbach.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc., 2016
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-216843 (URN)2-s2.0-85019890744 (Scopus ID)9783800742745 (ISBN)
Conference
42nd European Conference on Optical Communication, ECOC 2016, 18 September 2016 through 22 September 2016
Note

Conference code: 128551; Export Date: 24 October 2017; Conference Paper; CODEN: 85MOA. QC 20171129

Available from: 2017-11-29 Created: 2017-11-29 Last updated: 2017-11-29Bibliographically approved
da Silva, E. P., Borkowski, R., Preussler, S., Schwartau, F., Gaiarin, S., Olmedo, M. I., . . . Zibar, D. (2016). Combined Optical and Electrical Spectrum Shaping for High-Baud-Rate Nyquist-WDM Transceivers. IEEE Photonics Journal, 8(1), Article ID 7801411.
Open this publication in new window or tab >>Combined Optical and Electrical Spectrum Shaping for High-Baud-Rate Nyquist-WDM Transceivers
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2016 (English)In: IEEE Photonics Journal, ISSN 1097-5764, E-ISSN 1943-0655, Vol. 8, no 1, article id 7801411Article in journal (Refereed) Published
Abstract [en]

We discuss the benefits and limitations of optical time-division multiplexing (OTDM) techniques based on the optical generation of a periodic train of sinc pulses for wavelength-division multiplexing (WDM) transmission at high baud rates. It is shown how the modulated OTDM spectrum bandwidth is related to the optical comb parameters and the pulse shaping of the modulating waveforms in the electrical domain. Such dependence may result in broadening of the modulated spectra, which can degrade the performance of Nyquist-WDM systems due to interchannel crosstalk penalties. However, it is shown and experimentally demonstrated that the same technique of optical pulse train generation can be allied with digital pulse shaping to improve the confinement of the modulated spectrum toward the Nyquist limit independently of the number of OTDM tributaries used. To investigate the benefits of the proposed approach, we demonstrate the first WDM Nyquist-OTDM signal generation based on the periodic train of sinc pulses and electrical spectrum shaping. Straight line transmission of five 112.5-Gbd Nyquist-OTDM dual-polarization quadrature phase-shift keying (QPSK) channels is demonstrated over a dispersion uncompensated link up to 640 km, with full-field coherent detection at the receiver. It is shown that such a design strategy effectively improves the spectral confinement of the modulated OTDM signal, providing a minimum intercarrier crosstalk penalty of 1.5 dB in baud-rate-spaced Nyquist-WDM systems.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2016
Keywords
Coherent communications, Nyquist-OTDM
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-187851 (URN)10.1109/JPHOT.2016.2523978 (DOI)000375479300047 ()2-s2.0-84962649397 (Scopus ID)
Note

QC 20160531

Available from: 2016-05-31 Created: 2016-05-30 Last updated: 2017-11-30Bibliographically approved
Pang, X., Ozolins, O., Gaiarin, S., Iglesias Olmedo, M., Schatz, R., Westergren, U., . . . Jacobsen, G. (2016). Evaluation of high-speed EML-based IM/DD links with PAM modulations and low-complexity equalization. In: European Conference on Optical Communication, ECOC: . Paper presented at 42nd European Conference on Optical Communication, ECOC 2016, 18 September 2016 through 22 September 2016 (pp. 872-874). Institute of Electrical and Electronics Engineers Inc.
Open this publication in new window or tab >>Evaluation of high-speed EML-based IM/DD links with PAM modulations and low-complexity equalization
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2016 (English)In: European Conference on Optical Communication, ECOC, Institute of Electrical and Electronics Engineers Inc. , 2016, p. 872-874Conference paper (Refereed)
Abstract [en]

We experimentally evaluated up to 96 Gb/s/λ PAM IM/DD transmissions with an EML and digital equalizations. Symbol-spaced FFE/DFEs with fewer than 10 taps are shown being sufficient for a high and stable performance over a 4 km SMF link. .

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc., 2016
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-216880 (URN)2-s2.0-85019930388 (Scopus ID)9783800742745 (ISBN)
Conference
42nd European Conference on Optical Communication, ECOC 2016, 18 September 2016 through 22 September 2016
Note

Conference code: 128551; Export Date: 24 October 2017; Conference Paper; CODEN: 85MOA. QC 20171107

Available from: 2017-11-07 Created: 2017-11-07 Last updated: 2017-11-07Bibliographically approved
Kakkar, A., Olmedo, M. I., Ozolins, O., Navarro, J. R., Pang, X., Schatz, R., . . . Popov, S. (2016). Overcoming EEPN in Coherent Transmission Systems. In: 2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO): . Paper presented at Conference on Lasers and Electro-Optics (CLEO), JUN 05-10, 2016, San Jose, CA. IEEE conference proceedings
Open this publication in new window or tab >>Overcoming EEPN in Coherent Transmission Systems
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2016 (English)In: 2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), IEEE conference proceedings, 2016Conference paper, Published paper (Refereed)
Abstract [en]

We for the first time experimentally demonstrate a simple technique to overcome EEPN. Performance recovery from above FEC to <1 dB penalty for 28 Gbd 16-QAM over 520 km with high LO linewidth is achieved.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2016
Series
Conference on Lasers and Electro-Optics, ISSN 2160-9020
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-201284 (URN)000391286402479 ()2-s2.0-85010682957 (Scopus ID)978-1-9435-8011-8 (ISBN)
Conference
Conference on Lasers and Electro-Optics (CLEO), JUN 05-10, 2016, San Jose, CA
Note

QC 20170215

Available from: 2017-02-15 Created: 2017-02-15 Last updated: 2017-11-02Bibliographically approved
Olmedo, M. I., Pang, X., Piels, M., Schatz, R., Jacobsen, G., Popov, S., . . . Zibar, D. (2015). Carrier recovery techniques for semiconductor laser frequency noise for 28 Gbd DP-16QAM. In: Optical Fiber Communication Conference, OFC 2015: . Paper presented at Optical Fiber Communication Conference, OFC 2015, 22 March 2015 through 26 March 2015. IEEE
Open this publication in new window or tab >>Carrier recovery techniques for semiconductor laser frequency noise for 28 Gbd DP-16QAM
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2015 (English)In: Optical Fiber Communication Conference, OFC 2015, IEEE , 2015Conference paper, Published paper (Refereed)
Abstract [en]

We report on the first experimental comparison of DD-PLL, two-stage feed forward, and two variations of extended Kalman filtering for tracking semiconductor laser frequency noise. We identify which carrier phase recovery technique works best depending on the carrier induced frequency noise profile.

Place, publisher, year, edition, pages
IEEE, 2015
Keywords
Optical communication, Optical fiber communication, Optical fibers, Carrier induced, Carrier phase recovery, Carrier recovery, Experimental comparison, Extended Kalman filtering, Feed forward, Frequency noise, Semiconductor laser frequency, Semiconductor lasers
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-177235 (URN)000370976400162 ()2-s2.0-84930921546 (Scopus ID)9781557529374 (ISBN)
Conference
Optical Fiber Communication Conference, OFC 2015, 22 March 2015 through 26 March 2015
Note

QC 20151125

Available from: 2015-11-25 Created: 2015-11-17 Last updated: 2017-11-08Bibliographically approved
Iglesias Olmedo, M., Pang, X., Schatz, R., Zibar, D., Tafur Monroy, I., Jacobsen, G. & Popov, S. (2015). Digital signal processing approaches for semiconductor phase noise tolerant coherent transmission systems. In: Proceedings of SPIE - The International Society for Optical Engineering: . Paper presented at Optical Metro Networks and Short-Haul Systems VII; San Francisco; United States; 10 February 2015 through 12 February 2015.
Open this publication in new window or tab >>Digital signal processing approaches for semiconductor phase noise tolerant coherent transmission systems
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2015 (English)In: Proceedings of SPIE - The International Society for Optical Engineering, 2015Conference paper, Published paper (Refereed)
Abstract [en]

We discuss about digital signal processing approaches that can enable coherent links based on semiconductor lasers. A state-of-the art analysis on different carrier-phase recovery (CPR) techniques is presented. We show that these techniques are based on the assumption of lorentzian linewidth, which does not hold for monolithically integrated semiconductor lasers. We investigate the impact of such lineshape on both 3 and 20 dB linewidth and experimentally conduct a systematic study for 56-GBaud DP-QPSK and 28-GBaud DP-16QAM systems using a decision directed phase look loop algorithm. We show how carrier induced frequency noise has no impact on linewidth but a significant impact on system performance; which rises the question on whether 3-dB linewidth should be used as performance estimator for semiconductor lasers.

Keywords
Coherent communications, Optical communications, Phase noise, Digital signal processing, Frequency estimation, Linewidth, Metropolitan area networks, Monolithic integrated circuits, Optical communication, Signal processing, Carrier phase recovery, Coherent communication, Coherent transmission systems, Decision-directed, Monolithically integrated, Performance estimator, Semiconductor phase, Systematic study, Semiconductor lasers
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-167403 (URN)10.1117/12.2078408 (DOI)000354523400009 ()2-s2.0-84923917428 (Scopus ID)9781628414783 (ISBN)
Conference
Optical Metro Networks and Short-Haul Systems VII; San Francisco; United States; 10 February 2015 through 12 February 2015
Note

QC 20150608

Available from: 2015-05-29 Created: 2015-05-22 Last updated: 2017-11-08Bibliographically approved
Piels, M., Olmedo, M. I., Xue, W., Pang, X., Schaffer, C., Schatz, R., . . . Zibar, D. (2015). Laser Rate Equation-Based Filtering for Carrier Recovery in Characterization and Communication. Journal of Lightwave Technology, 33(15), 3271-3279
Open this publication in new window or tab >>Laser Rate Equation-Based Filtering for Carrier Recovery in Characterization and Communication
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2015 (English)In: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 33, no 15, p. 3271-3279Article in journal (Refereed) Published
Abstract [en]

We formulate a semiconductor laser rate equation-based approach to carrier recovery in a Bayesian filtering framework. Filter stability and the effect of model inaccuracies (unknown or unuseable rate equation coefficients) are discussed. Two potential application areas are explored: Laser characterization and carrier recovery in coherent communication. Two rate equation-based Bayesian filters, the particle filter and extended Kalman filter, are used in conjunction with a coherent receiver to measure frequency noise spectrum of a photonic crystal cavity laser with less than 20 nW of fiber-coupled output power. The extended Kalman filter is also used to recover a 28-GBd DP-16 QAM signal where a decision-directed phase-locked loop fails.

Keywords
Coherent communication, diode lasers, optical communication, phase estimation, phase noise, quadrature amplitude modulation, semiconductor lasers
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-172685 (URN)10.1109/JLT.2015.2430373 (DOI)000358574700016 ()2-s2.0-84934759688 (Scopus ID)
Note

QC 20150901

Available from: 2015-09-01 Created: 2015-08-27 Last updated: 2017-12-04Bibliographically approved
Navarro, J. R., Olmedo, M. I., Kakkar, A., Pang, X., Ozolins, O., Schatz, R., . . . Zibar, D. (2015). Phase noise tolerant carrier recovery scheme for 28 Gbaud circular 16QAM. In: European Conference on Optical Communication, ECOC: . Paper presented at 41st European Conference on Optical Communication, ECOC 2015, 27 September 2015 through 1 October 2015. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Phase noise tolerant carrier recovery scheme for 28 Gbaud circular 16QAM
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2015 (English)In: European Conference on Optical Communication, ECOC, Institute of Electrical and Electronics Engineers (IEEE), 2015Conference paper, Published paper (Refereed)
Abstract [en]

We propose a novel carrier phase recovery scheme for circular 16QAM coherent transmission systems. Experimental results show low penalties (<1.4 dB) even for linewidths where square 16QAM exhibits irretrievable (above the FEC limit) error floor.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2015
Keywords
Quadrature amplitude modulation, Carrier phase recovery, Carrier recovery, Coherent transmission systems, Error floor, Optical communication
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-186811 (URN)10.1109/ECOC.2015.7341657 (DOI)000377373100048 ()2-s2.0-84957837128 (Scopus ID)9788460817413 (ISBN)
Conference
41st European Conference on Optical Communication, ECOC 2015, 27 September 2015 through 1 October 2015
Note

QC 20160601

Available from: 2016-06-01 Created: 2016-05-13 Last updated: 2017-11-08Bibliographically approved
Piels, M., Olmedo, M. I., Pang, X., Schatz, R., Jacobsen, G., Popov, S. & Zibar, D. (2015). Rate equation-based phase recovery for semiconductor laser coherent transmitters. In: Optical Fiber Communication Conference, OFC 2015: . Paper presented at Optical Fiber Communication Conference, OFC 2015, 22 March 2015 through 26 March 2015. OSA - The Optical Society
Open this publication in new window or tab >>Rate equation-based phase recovery for semiconductor laser coherent transmitters
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2015 (English)In: Optical Fiber Communication Conference, OFC 2015, OSA - The Optical Society , 2015Conference paper, Published paper (Refereed)
Abstract [en]

We present a novel carrier recovery technique for coherent systems with semiconductor lasers that incorporates the laser dynamics. A sensitivity improvement of 8dB over a decisiondirected phase-locked loop is achieved experimentally for 28GBd DP-16QAM.

Place, publisher, year, edition, pages
OSA - The Optical Society, 2015
Keywords
Optical communication, Optical fiber communication, Optical fibers, Phase locked loops, Carrier recovery, Coherent system, Decision-directed, Laser dynamics, Phase recovery, Rate equations, Sensitivity improvements, Semiconductor lasers
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-177236 (URN)000370976400453 ()2-s2.0-84930889096 (Scopus ID)9781557529374 (ISBN)
Conference
Optical Fiber Communication Conference, OFC 2015, 22 March 2015 through 26 March 2015
Note

QC 20151124

Available from: 2015-11-24 Created: 2015-11-17 Last updated: 2017-11-08Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-8543-4531

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