Maria Spyropoulou | National Technical University of Athens (original) (raw)
Papers by Maria Spyropoulou
Journal of Lightwave Technology
Users may download and print one copy of any publication from the public portal for the purpose... more Users may download and print one copy of any publication from the public portal for the purpose of private study or research. You may not further distribute the material or use it for any profit-making activity or commercial gain You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.
Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference Paper Jwa37, Mar 25, 2007
For the first time to our knowledge we perform a study related with multi-wavelength 2R regenerat... more For the first time to our knowledge we perform a study related with multi-wavelength 2R regeneration based on cross-gain modulation (XGM) operation at 40Gbps using quantum-dot semiconductor optical amplifiers (QD-SOAs).
We study single and multi-wavelength clock recovery functionality based on a fabrypérot filter fo... more We study single and multi-wavelength clock recovery functionality based on a fabrypérot filter followed by a quantum-dot SOA at 40 Gb/s and we demonstrate its performance for various pseudo-random binary sequences and operating power levels.
2 Executive Summary Recent technology development has unlocked most of the fiber capacity making ... more 2 Executive Summary Recent technology development has unlocked most of the fiber capacity making capacity an abundant resource. However, the majority of WDM (Wavelength Division Multiplexing) deployment has occurred in the form of point-to-point links with amplifiers in between if needed. Optical WDM lightpaths are static and are seen as a scarce resource. Once set up, they remain in place, essentially forever. Therefore, switching is only to transforms the raw bit rates into useful bandwidth. The prime objective ...
Journal of Lightwave Technology, 2015
Advanced Photonics & Renewable Energy, 2010
We study single and multi-wavelength clock recovery functionality based on a fabrypérot filter fo... more We study single and multi-wavelength clock recovery functionality based on a fabrypérot filter followed by a quantum-dot SOA at 40 Gb/s and we demonstrate its performance for various pseudo-random binary sequences and operating power levels.
2011 13th International Conference on Transparent Optical Networks, 2011
In this paper, an approach of a colorless ONU comprised by a Fabry-Pérot filter and a Semiconduct... more In this paper, an approach of a colorless ONU comprised by a Fabry-Pérot filter and a Semiconductor Optical Amplifier for all-optical clock recovery of the downstream signal, followed by a Mach-Zehnder modulator as the upstream modulator is experimentally demonstrated. The all-optical clock recovery performs data erasure allowing for efficient wavelength reuse of the downstream signal for upstream remodulation. Operation at a fullduplex 10Gb/s symmetrical data rate and 20 dB loss budget is demonstrated over fiber spans of 50 km with achieved power margin of ~8 dB.
37th European Conference and Exposition on Optical Communications, 2011
Wavelength shifting based on the all-optical clock recovery of a RZ-downstream with suppressed cl... more Wavelength shifting based on the all-optical clock recovery of a RZ-downstream with suppressed clock harmonic is presented, avoiding in-band Rayleigh backscattering for choosing this particular harmonic as upstream carrier, even for a low OSRR <10dB.
Optical Fiber Communication Conference, 2012
An aggregation scheme based on a D(Q)PSK/ASK comb transmission in the feeder is presented. A shar... more An aggregation scheme based on a D(Q)PSK/ASK comb transmission in the feeder is presented. A shared delay interferometer allows simple ONUs that are assisted by a ring resonator.
36th European Conference and Exhibition on Optical Communication, 2010
The feasibility of transmitting 0.87 Tbit/s dual polarization D8PSK-OTDM over 110 km is, for the ... more The feasibility of transmitting 0.87 Tbit/s dual polarization D8PSK-OTDM over 110 km is, for the first time, demonstrated along with 0.44 Tbit/s single polarization D8PSK-OTDM over 220 km in conventional 55-km span SMF+DCF link.
Lecture Notes in Computer Science, 2009
Lecture Notes in Computer Science, 2007
We demonstrate the applicability of quantum-dot semiconductor-opticalamplifier based wavelength c... more We demonstrate the applicability of quantum-dot semiconductor-opticalamplifier based wavelength converters to the implementation of an ultra-high speed optical packet switching buffer. The buffer architecture consists of cascaded programmable delay stages that fully utilize the available wavelengths and thus minimize the number of wavelength converters that are required to implement the buffer. Physical layer simulations demonstrate error-free operation of the buffer with 3 cascaded Time-Slot-Interchager (TSI) stages at 160 Gbps in the 1.55um window.
Lecture Notes in Computer Science, 2009
In this paper we discussed different switch architectures. We focus mainly on optical buffering. ... more In this paper we discussed different switch architectures. We focus mainly on optical buffering. We investigate an all-optical buffer architecture comprising of cascaded stages of quantum-dot semiconductor optical amplifier-based tunable wavelength converters, at 160 Gb/s. We also propose the optical buffer with multi-wavelength converters based on quantum-dot semiconductor optical amplifiers. We present multistage switching fabrics with optical buffers, where optical buffers are based on fibre delay lines and are located in the first stage. Finally, we describe a photonic asynchronous packet switch and show that the employment of a few optical buffer stages to complement the electronic ones significantly improves the switch performance. We also propose two asynchronous optical packet switching node architectures, where an efficient contention resolution is based on controllable optical buffers and tunable wavelength converters TWCs.
Advances in Optical Amplifiers, 2011
Optical Fiber Communication Conference, 2012
M. Bougioukos1*, L. Gleeson2, P. Zakynthinos3, M. Spyropoulou1, S. Dris1, R. Magri2, M. Camera2, ... more M. Bougioukos1*, L. Gleeson2, P. Zakynthinos3, M. Spyropoulou1, S. Dris1, R. Magri2, M. Camera2, D. Klonidis3, I. Tomkos3, B. Schrenk1, P. Bakopoulos1, D. Apostolopoulos1, Ch. Kouloumentas1, D. Rogers4, A. Poustie4, G. Maxwell4, R. Stoffer5, T. Korthorst5, K.-O. Velthaus6, R. Kaiser6, L. Moerl6, K. Boustedt7 and H. Avramopoulos1 1School of Electrical &amp; Computer Engineering, National Technical University of Athens,Iroon Polytechniou Street 9, 15773, Athens, Greece 2ERICSSON Italy, Ericsson Telecomunicazioni SpA, Italy 3Athens ...
2009 International Conference on Photonics in Switching, 2009
We present analytical expressions for the frequency domain transfer function of three different S... more We present analytical expressions for the frequency domain transfer function of three different SOA-MZI wavelength conversion schemes providing insight into their modulation bandwidth and speed capabilities for NRZ signal wavelength conversion applications.
2009 IEEE/LEOS Summer Topical Meeting, 2009
For the first time, we derive the frequency-domain transfer function of SOA-based MZI configurati... more For the first time, we derive the frequency-domain transfer function of SOA-based MZI configurations based on small-signal gain analysis using simplified analytical expressions for the SOAs response, providing qualitative insight for various non-linear optical applications.
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2009
Abstract. This chapter presents recent developments in optical signal processing techniques and d... more Abstract. This chapter presents recent developments in optical signal processing techniques and digital logic. The first section focuses on techniques to obtain key functionalities as signal regeneration and wavelength conversion exploiting nonlinear effects in high nonlinear fibres and semiconductor optical amplifiers. The second section covers techniques for clock recovery and retiming at high-speed transmission up to 320 Gb/s. In addition a technique to obtain OTDM demultiplexing based on cross-phase modulation is ...
Optical Metro Networks and Short-Haul Systems Ii, 2010
A regenerative optical grooming switch for interconnecting 100 Gbit/s networks with lower bit-rat... more A regenerative optical grooming switch for interconnecting 100 Gbit/s networks with lower bit-rate networks and switching functionality in time, space and wavelength domain is demonstrated. Lab and field demonstrations show the feasibility of the new concept. Q-factors above 20 dB are reported.
Journal of Lightwave Technology
Users may download and print one copy of any publication from the public portal for the purpose... more Users may download and print one copy of any publication from the public portal for the purpose of private study or research. You may not further distribute the material or use it for any profit-making activity or commercial gain You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.
Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference Paper Jwa37, Mar 25, 2007
For the first time to our knowledge we perform a study related with multi-wavelength 2R regenerat... more For the first time to our knowledge we perform a study related with multi-wavelength 2R regeneration based on cross-gain modulation (XGM) operation at 40Gbps using quantum-dot semiconductor optical amplifiers (QD-SOAs).
We study single and multi-wavelength clock recovery functionality based on a fabrypérot filter fo... more We study single and multi-wavelength clock recovery functionality based on a fabrypérot filter followed by a quantum-dot SOA at 40 Gb/s and we demonstrate its performance for various pseudo-random binary sequences and operating power levels.
2 Executive Summary Recent technology development has unlocked most of the fiber capacity making ... more 2 Executive Summary Recent technology development has unlocked most of the fiber capacity making capacity an abundant resource. However, the majority of WDM (Wavelength Division Multiplexing) deployment has occurred in the form of point-to-point links with amplifiers in between if needed. Optical WDM lightpaths are static and are seen as a scarce resource. Once set up, they remain in place, essentially forever. Therefore, switching is only to transforms the raw bit rates into useful bandwidth. The prime objective ...
Journal of Lightwave Technology, 2015
Advanced Photonics & Renewable Energy, 2010
We study single and multi-wavelength clock recovery functionality based on a fabrypérot filter fo... more We study single and multi-wavelength clock recovery functionality based on a fabrypérot filter followed by a quantum-dot SOA at 40 Gb/s and we demonstrate its performance for various pseudo-random binary sequences and operating power levels.
2011 13th International Conference on Transparent Optical Networks, 2011
In this paper, an approach of a colorless ONU comprised by a Fabry-Pérot filter and a Semiconduct... more In this paper, an approach of a colorless ONU comprised by a Fabry-Pérot filter and a Semiconductor Optical Amplifier for all-optical clock recovery of the downstream signal, followed by a Mach-Zehnder modulator as the upstream modulator is experimentally demonstrated. The all-optical clock recovery performs data erasure allowing for efficient wavelength reuse of the downstream signal for upstream remodulation. Operation at a fullduplex 10Gb/s symmetrical data rate and 20 dB loss budget is demonstrated over fiber spans of 50 km with achieved power margin of ~8 dB.
37th European Conference and Exposition on Optical Communications, 2011
Wavelength shifting based on the all-optical clock recovery of a RZ-downstream with suppressed cl... more Wavelength shifting based on the all-optical clock recovery of a RZ-downstream with suppressed clock harmonic is presented, avoiding in-band Rayleigh backscattering for choosing this particular harmonic as upstream carrier, even for a low OSRR <10dB.
Optical Fiber Communication Conference, 2012
An aggregation scheme based on a D(Q)PSK/ASK comb transmission in the feeder is presented. A shar... more An aggregation scheme based on a D(Q)PSK/ASK comb transmission in the feeder is presented. A shared delay interferometer allows simple ONUs that are assisted by a ring resonator.
36th European Conference and Exhibition on Optical Communication, 2010
The feasibility of transmitting 0.87 Tbit/s dual polarization D8PSK-OTDM over 110 km is, for the ... more The feasibility of transmitting 0.87 Tbit/s dual polarization D8PSK-OTDM over 110 km is, for the first time, demonstrated along with 0.44 Tbit/s single polarization D8PSK-OTDM over 220 km in conventional 55-km span SMF+DCF link.
Lecture Notes in Computer Science, 2009
Lecture Notes in Computer Science, 2007
We demonstrate the applicability of quantum-dot semiconductor-opticalamplifier based wavelength c... more We demonstrate the applicability of quantum-dot semiconductor-opticalamplifier based wavelength converters to the implementation of an ultra-high speed optical packet switching buffer. The buffer architecture consists of cascaded programmable delay stages that fully utilize the available wavelengths and thus minimize the number of wavelength converters that are required to implement the buffer. Physical layer simulations demonstrate error-free operation of the buffer with 3 cascaded Time-Slot-Interchager (TSI) stages at 160 Gbps in the 1.55um window.
Lecture Notes in Computer Science, 2009
In this paper we discussed different switch architectures. We focus mainly on optical buffering. ... more In this paper we discussed different switch architectures. We focus mainly on optical buffering. We investigate an all-optical buffer architecture comprising of cascaded stages of quantum-dot semiconductor optical amplifier-based tunable wavelength converters, at 160 Gb/s. We also propose the optical buffer with multi-wavelength converters based on quantum-dot semiconductor optical amplifiers. We present multistage switching fabrics with optical buffers, where optical buffers are based on fibre delay lines and are located in the first stage. Finally, we describe a photonic asynchronous packet switch and show that the employment of a few optical buffer stages to complement the electronic ones significantly improves the switch performance. We also propose two asynchronous optical packet switching node architectures, where an efficient contention resolution is based on controllable optical buffers and tunable wavelength converters TWCs.
Advances in Optical Amplifiers, 2011
Optical Fiber Communication Conference, 2012
M. Bougioukos1*, L. Gleeson2, P. Zakynthinos3, M. Spyropoulou1, S. Dris1, R. Magri2, M. Camera2, ... more M. Bougioukos1*, L. Gleeson2, P. Zakynthinos3, M. Spyropoulou1, S. Dris1, R. Magri2, M. Camera2, D. Klonidis3, I. Tomkos3, B. Schrenk1, P. Bakopoulos1, D. Apostolopoulos1, Ch. Kouloumentas1, D. Rogers4, A. Poustie4, G. Maxwell4, R. Stoffer5, T. Korthorst5, K.-O. Velthaus6, R. Kaiser6, L. Moerl6, K. Boustedt7 and H. Avramopoulos1 1School of Electrical &amp; Computer Engineering, National Technical University of Athens,Iroon Polytechniou Street 9, 15773, Athens, Greece 2ERICSSON Italy, Ericsson Telecomunicazioni SpA, Italy 3Athens ...
2009 International Conference on Photonics in Switching, 2009
We present analytical expressions for the frequency domain transfer function of three different S... more We present analytical expressions for the frequency domain transfer function of three different SOA-MZI wavelength conversion schemes providing insight into their modulation bandwidth and speed capabilities for NRZ signal wavelength conversion applications.
2009 IEEE/LEOS Summer Topical Meeting, 2009
For the first time, we derive the frequency-domain transfer function of SOA-based MZI configurati... more For the first time, we derive the frequency-domain transfer function of SOA-based MZI configurations based on small-signal gain analysis using simplified analytical expressions for the SOAs response, providing qualitative insight for various non-linear optical applications.
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2009
Abstract. This chapter presents recent developments in optical signal processing techniques and d... more Abstract. This chapter presents recent developments in optical signal processing techniques and digital logic. The first section focuses on techniques to obtain key functionalities as signal regeneration and wavelength conversion exploiting nonlinear effects in high nonlinear fibres and semiconductor optical amplifiers. The second section covers techniques for clock recovery and retiming at high-speed transmission up to 320 Gb/s. In addition a technique to obtain OTDM demultiplexing based on cross-phase modulation is ...
Optical Metro Networks and Short-Haul Systems Ii, 2010
A regenerative optical grooming switch for interconnecting 100 Gbit/s networks with lower bit-rat... more A regenerative optical grooming switch for interconnecting 100 Gbit/s networks with lower bit-rate networks and switching functionality in time, space and wavelength domain is demonstrated. Lab and field demonstrations show the feasibility of the new concept. Q-factors above 20 dB are reported.