Loukas Paraschis

Infinera (United States)

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Alan E. Willner

University of Southern California

Morteza Ziyadi

Novo Nordisk (United States)

S. J. Ben Yoo

University of California, Davis

Carsten Langrock

Stanford University

A. Mohajerin-Ariaei

University of Southern California

Louis Christen

Northrop Grumman (United States)

Ahmed Almaiman

King Saud University

Moshe Tur

Tel Aviv University

Ori Gerstel

Cisco Systems (Israel)

M. M. Fejer

Stanford University

Cooperative Institutions

University of Southern California

Infinera (United States)

Stanford University

University of California, Davis

Southern California University for Professional Studies

Engineering Systems (United States)

Cisco Systems (China)

Technical University of Denmark

Institute of Electrical and Electronics Engineers

Columbia University

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Operational Solutions for an Open DWDM layer

O. Gerstel Roberto Cassata Loukas Paraschis Walid Wakim

We discuss operational considerations of implementing alien wavelengths over an open DWDM network, using advanced DWDM system capabilities. We demonstrate feasibility of this solution using a commercial management tool and DWDM system.

10.1364/nfoec.2009.nthf1

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Citations (9)

Innovations in Network Monetization and Optimization

Frontiers in Optics (2014)

Mazen Khaddam Loukas Paraschis

The increasingly maturing SDN and NFV innovations offer an important opportunity for service providers to better monetize their networks, by improving the time-to-market, and SLAs guarantees for premium services, as well as the network utilization of volume-based service delivery. This paper outlines the main benefits SDN and NFV can bring to network service delivery, especially for business services, motivating the adoption of SDN and NFV in the network architecture.

Monetization

Network Functions Virtualization

10.1364/fio.2014.ftu1b.1

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CD/PMD-Insensitive optical performance monitoring of OSNR degradation in an 80-Gb/s pol-muxed RZ-DPSK system

Jeng-Yuan Yang Lin Zhang Yang Yue Vahid R. Arbab Anjali Agarwal

We experimentally demonstrate an OSNR monitoring technique for 80-Gb/s polarization-multiplexed RZ-DPSK utilizing narrowband optical filter and RF spectrum analysis. Maximum RF power increment of 19.7 dB, insensitive to CD and PMD, is measured for monitoring of OSNR up to 27 dB.

Narrowband

Degradation

Optical power

10.1109/leos.2008.4688731

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<title>Physical properties of photopolymer recording for nonvolatile volume holographic storage</title>

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (1999)

Loukas Paraschis Yasuyuki Sugiyama Lambertus Hesselink

We evaluate the physical properties of volume holographic recording in photopolymer that allow for high performance nonvolatile digital data storage. We identified efficient volume grating formation for photoinitiated cationic-ring- opening polymerization that utilizes unrestricted monomer diffusive transport contributions in the grating development process during and after exposure.

Holographic Data Storage

Optical storage

Cationic polymerization

Optical recording

10.1117/12.354830

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A 10-Gbit/s EML link using detuned narrowband optical filtering

Optics Express (2007)

P. Ebrahimi Richard Jones Y. Wang Lijie Yan T. Mader

In this paper, the effects of asymmetric narrowband optical filtering are investigated in a 10-Gbit/s optical communication link using integrated electro-absorption modulated lasers (EML). We investigate the effect of EML chirp on link performance as well as the optimal filter bandwidth and wavelength detuning. We show that both the phase response and the spectral narrowing of the filter will enable a longer distance transmission by interacting with the EML transient chirp and compensating for the fiber chromatic dispersion. Experimentally, an 8.75-GHz filter is shown to improve the link distance by 40 km from 65 to 105 km, when transmitting over standard single mode fiber.

Narrowband

Chirp

10.1364/oe.15.010597

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Optical Clock Recovery and 3R Regeneration for 10-Gb/s NRZ Signal to Achieve 10 000-hop Cascadability and 1 000 000-km Transmission

IEEE Photonics Technology Letters (2006)

M. Funabashi Zuqing Zhu Zhongqi Pan Loukas Paraschis S. J. Ben Yoo

This letter experimentally demonstrates all-optical clock recovery and optical 3R regeneration for a 10-Gb/s nonreturn-to-zero (NRZ) format. The 3R regenerator has achieved 10 000-hop cascadability and 1 000 000-km transmission for a pseudorandom bit sequence (PRBS) of 2 ⁷ -1. A semiconductor-optical-amplifier-based Mach-Zehnder interferometer (SOA-MZI) as an NRZ to pseudoreturn-to-zero converter and a Fabry-Perot filter perform the all-optical clock recovery from an NRZ signal. A pair of SOA-MZIs combined with a synchronous modulator provides the 2R regeneration and retiming functions. The cascadability of the 3R regenerator is investigated in a recirculating loop transmission experiment by eye diagram, bit-error rate, and Q-factor measurements. Transmission with the 3R regenerator shows significant performance improvement over that without 3R regeneration. A 100-hop cascadability is also demonstrated for PRBS 2 ³¹ -1, enabling 10 000-km error-free transmission with a low power penalty of 1.2 dB

Clock Recovery

Signal regeneration

Retiming

Pseudorandom binary sequence

10.1109/lpt.2006.883247

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Citations (12)

Statistical analysis of polymer grating distortions in volume holographic digital storage

Nonlinear Optics '98. Materials, Fundamentals and Applications Topical Meeting (Cat. No.98CH36244) (2002)

Loukas Paraschis L. Hesselink

We discuss the statistical properties of the polymer grating strength fluctuations due to postrecording distortions in holographic digital data storage (HDDS). The present study further provides a formalism for incorporating signal noise in the analysis of a HDDS system, and for evaluating, in a unified framework, the system performance characteristics.

Holographic Data Storage

Statistical Analysis

Formalism (music)

10.1109/nlo.1998.710182

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Demonstration of Optical 3R Regenerator for 10 Gb/s NRZ signal in Reconfigurable Recirculating Loop Transmission

International Conference on Photonics in Switching (2006)

M. Funabashi Zuqing Zhu Zhongqi Pan Loukas Paraschis S. J. Ben Yoo

This paper demonstrates optical 3R regeneration for a 10 Gb/s nonreturn-to-zero (NRZ) data format. Semiconductor optical amplifier based Mach-Zehnder interferometer (SOA-MZI) wavelength converters, synchronous modulator, and Fabry-Perot filter (FPF) are used for 3R regenearation including all-optical clock recovery. Recirculating loop transmission experiments compare transmission performances with different 3R regenation spacings. Transmission with the 3R regenerator shows significant performance improvement over that without 3R regeneration in terms of eye diagram, Q-factor, and transmission distance. Q-factors around 20 dB are obtained up to a transmission distance of 5000 km when the 3R regeneration spacing is 100 or 500 km.

SIGNAL (programming language)

Clock Recovery

Signal regeneration

10.1109/ps.2006.4350126

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Bandwidth Scalable, Coherent Transmitter Based on Parallel Spectral Slice Waveform Generation

David J. Geisler Nicolas K. Fontaine Ryan P. Scott Tingting He Loukas Paraschis

We present a bandwidth scalable optical transmitter for creating high bandwidth optical signals using parallel low speed electronics. Proof-of-concept 20 GHz spectral width, 100 ns, 10 Gb/s DPSK and 20 Gb/s QPSK waveforms are generated.

10.1364/cleo_si.2011.cthh1

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Evaluation of the Applications of Tunable Lasers in Metropolitan Networks

Loukas Paraschis Ori Gerstel R. Ramaswami

We evaluate the system applications of tunable lasers. Automated wavelength provisioning could be important in mesh, core WDM networks, but remains limited in the emerging multi-service metropolitan networks by the pre-deployment cost. In inventory applications, however, tunability allows savings, particularly in high volume operations, and highperformance 10 Gb/s designs, which enable the introduction of the technology in metro core networks. We also relate our conclusions to the value of the emerging pluggable WDM modules, which offer an attractive alternative, especially to multi-service metro access system applications.

Provisioning

Metropolitan area network

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