What we do

OpenLightComm offers consulting services in the converged landscape of IT and Telecommunications. Our extensive experience and knowledge-base has been acquired over many years by directing and/or conducting research and development for Industry and Academia. Through participation in co-operative multinational Research we have seen that the benefits are priceless for all partners who contribute their distinct thinking and experience.

Our expertise

Our main expertise is in the following fields

Softwarised Fixed-Mobile Converged Platforms based on Open Software

Undoubtedly the Access network is the segment with the network segment with the most diverse challenges: concurrent use of the most diversified technologies while requiring a common control and management framework and the quest for commoditisation of the technology platforms are some of them.

We have proposed, evaluated and demonstrated a prototype of the HYDRA architecture which allows both fixed and wireless operators to share a common physical infrastructure. Making use of a technology-agnostic last-drop scheme, that is offering to operators the chance to provide broadband at truly low CapEx/OpEx, we are leveraging NFV to allow executing complex application with stringent latency requirement close to the end-user. Moreover, the exploitation of SDN using open-software (like OpenFlow) to control and orchestrate this platform allows the seamless operation and integration of heterogeneous access systems and networks.

Last, but not least, we have developed an extensive knowledge in modelling and developing Passive Optical Network (PON) sub-systems; a knowledge gained by participating for over 20 years in EU and national research projects.

Architectural solutions for ICT

We have developed extensive knowledge and experience in conducting research in the topics of node architectures, assessment of static and dynamic Core and Metropolitan network solutions and techno-economic evaluation of transport technologies. We have pioneered in proposing novel optical node architectures for transparent and translucent optical networks including the SERANO and the λ-S-λ/S-λ-S architectures to serve translucent optical networks. We have evaluated the performance of such architectures in terms of their blocking probability, CapEx/OpEx and complexity.

The shift of economic activity to data-intensive methods mandates the convergence of Datacentres and Telecom infrastructure. We have developed Datacentre architectural solutions where optics are deeply penetrating the interconnection fabric in a quest to minimize the role of electronic switching, which is replaced with Passive Optical Network systems. In this way a reduction to CapEx/OpEx is obtained, while alleviating the currently saturated Spine-and-Leaf architectures. Our solution is exploiting transmission and passive multiplexing avoiding the remedies associated with still immature optical packet systems.

We have proposed the CANON architecture that extends a pioneering approach on dynamic Metropolitan networks developed in the EU project DAVID, where we participated, to the case of partially meshed Core networks or National backbone networks, and have evaluated its performance for a number of national European networks. Finally, we have contributed to pioneering research projects in the topic of Elastic Optical Networks (EON).

Mutli-layer and Cross-layer Networking in Fixed Networks

Network Planning and resource optimization are the core business of network operators. Facing a multitude of different choices in making their network more efficient, operators often have to choose between the contradicting requirements of upgrading to a new technology or making the most from the available infrastructure by re-engineering the existing setup. The later an be done through avoiding duplications in the functionality provided in various network segments. Our expertise in network planning and design allows to rationalize these plans: In short, we can be a reliable partner to carry out network dimensioning, migration, performance evaluation and modelling work, both in research and development.

Physical Layer Modelling and Design of Optical Communications Systems

Despite the astonishing progress being made during the last 25 years or so, the physical layer design of optical networks is still imposing great challenges. This applies to both legacy fixed-grid WDM links as well as, and in many cases to an even greater extent, to Elastic Optical Networks where more stringent and complex trade-offs between distance, modulation format, complexity and cost do exist and where the role of fibre non-linearities is more subtle.

We have acquired an extensive experience in designing optical links and end-to-end transparent or translucent optical networks exploiting a wide variety of system technologies and network topologies including: realistic Metropolitan Networks, Core networks of major European Operators, fixed-grid (NRZ) systems, Elastic Optical Networks with a variety of modulation formats, modelling of physical layer impairments and their impact in system performance, optical node configurations offering diverse functionality to serve Optical Circuit and Packet/Slot systems. We have at our disposal physical layer simulation tools and a design methodology that has been extensively tested and validated in industry and a great number of research projects.

Assessment of Optical Technology and its Impact on System Performance

Although physical layer modelling is an important tool in assessing the merit of a given optical system’s technology, it cannot alone guarantee that conclusions can be drawn on the effectiveness of this technology. We are offering our extensive know-how in delivering the requested end-to-end performance in order to benchmark a given solution against a range of alternatives in order to identify the most cost-effective variant.

The benchmarking may range from end-to-end network functionality, to network (QoS) performance to physical layer performance or any combination of them.

Open software

In OpenLightComm we leverage open source software in our work. Our position is that open source is the embodiment of the scientific method and of the principle of peer review in software development.

As such, we are preparing several of our software systems for release.


We are currently working on the METRO-HAUL project.

The aim of this project is to design and build a smart optical metro infrastructure able to support traffic originating from heterogeneous 5G access networks, addressing the anticipated capacity increase and its specific characteristics, e.g., mobility, low latency, low jitter etc. This infrastructure will also support a wide variety of services and use cases with special emphasis on services from various industries vertical to the ICT.

OopenLightComm is involved in node design for a filterless transport metro network, including the corresponding software control interfaces based on open s/w and the assessment of the end-to-end physical layer performance of the filterless configuration for the Metro network.

Selected publications

E. Kosmatos, D. Uzunidis, C. Matrakidis, A. Stavdas, S. Horlitz, T. Pfeiffer and A. Lord, "Building a Truly Dynamic Filterless Metro Network by Reusing a Commercial PON's Data-Plane and a Novel SDN-Enabled Control-Plane," Journal of Lightwave Technology, vol. 37, no. 24, pp. 6033-6039, 15 Dec. 2019

E. Kosmatos, C. Matrakidis, D. Uzunidis, A. Stavdas, S. Ηorlitz, T. Pfeiffer and A. Lord, "Architectural Foundation and Control-Plane Integration of a Novel Metro-Access, Cloud-Integrated, Node," European Conference on Optical Communication (ECOC), Dublin, 23-26 Sept. 2019

D. Uzunidis, C. Matrakidis and A. Stavdas, “Closed-form FWM expressions accounting for the impact of modulation format,” Optics Communications, vol. 440, pp. 132-138, 1 June 2019

D. Uzunidis, E. Kosmatos, C. Matrakidis, A. Stavdas and A. Lord, "DuFiNet: Architectural Considerations and Physical Layer Studies of an Agile and Cost-Effective Metropolitan Area Network," Journal of Lightwave Technology, vol. 37, no. 3, pp. 808-814, 1 Feb. 2019

E. Kosmetos, C. Matrakidis, A. Stavdas, S. Horlitz, T. Pfeiffer and A. Lord, "A Dynamic Transportation Platform for Metropolitan Networks Exploiting PON Technology and a Novel Control-Plane," European Conference on Optical Communication (ECOC), Rome, 2018

E. Kosmetos, C. Matrakidis, A. Stevdas and T. Orfanoudakis, "An SDN Architecture for PON Networks Enabling Unified Management Using Abstractions," European Conference on Optical Communication (ECOC), Rome, 2018

D. Uzunidis, C. Matrakidis, A. Stavdas and A. Lord, "DuFiNet: A Flexible, High-Capacity and Cost-Effective Solution for Metropolitan Area Networks," European Conference on Optical Communication (ECOC), Rome, 2018

C. Matrakidis and I. Tomkos, "On the Performance Improvement and Cost Effectiveness Resulting from the Placement of Novel Architectures of Interconnected Transponders in Elastic Optical Networks," European Conference on Optical Communication (ECOC), Gothenburg, 2017

C. Matrakidis, T. Orphanoudakis, A. Stavdas, J.P. Fernandez-Palacios Gimenez, A. Manzalini, "HYDRA: A Scalable Ultra Long Reach/High Capacity Access Network Architecture Featuring Lower Cost and Power Consumption," Journal of Lightwave Technology, vol. 33, no. 2, pp. 339-348, 15 Jan. 2015

C. Matrakidis, T. Orphanoudakis, A. Stavdas, A. Lord, "Network optimization exploiting traffic grooming techniques under fixed and elastic spectrum allocation," European Conference on Optical Communication (ECOC), 21-25 Sept. 2014

E. Kosmatos, T. Orphanoudakis, C. Matrakidis, A. Stavdas, A. Lord, "Switchless elastic rate node (SERANO) architecture for flexgrid and elastic rate networks," European Conference on Optical Communication (ECOC), 21-25 Sept. 2014

A. Stavdas, C. Matrakidis, C.(T.) Politi, T. Orphanoudakis, J. Dunne, "A novel architecture for highly virtualised software-defined optical clouds," European Conference on Optical Communication (ECOC), 22-26 Sept. 2013

A. Stavdas, A. Bianco, A. Pattavina, C. Raffaelli, C. Matrakidis, C. Piglione, C.(T.) Politi, M. Savi, R. Zanzottera, "Performance evaluation of large capacity broadcast-and-select optical crossconnects," Optical Switching and Networking, vol. 9, no. 1, pp. 13-24, Jan. 2012

A. Stavdas, T. Orphanoudakis, H.C. Leligou, K. Kanonakis, C. Matrakidis, A. Drakos, J.D. Angelopoulos, A. Lord, "Dynamic CANON: a scalable multidomain core network," IEEE Communications Magazine, vol. 46, no. 6, pp. 138-144, June 2008

A. Stavdas, S. Sygletos, M. O'Mahoney, H.L. Lee, C. Matrakidis, A. Dupas, "IST-DAVID: concept presentation and physical layer modeling of the metropolitan area network," Journal of Lightwave Technology, vol. 21, no. 2, pp. 372-383, Feb. 2003

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Unit 9707
PO Box 6945