Network on the right tracks!

Take up the challenge with Salumanus.
11-12 October 2022 at Novotel Warszawa Centrum.


Join the creators of the fastest network solutions.

The 15th Dni Światła will draw inspiration from the world’s fastest rail systems. While new train prototypes in Asia can already develop speeds of up to 620 km/h, we are moving fast forward to a world of 800G transmission.

What systems should you invest in if you don’t want to lag behind? How do you optimise your network to resist price pressures? What is the trick to staying immune to global economic upheavals and supply chain disruptions? We will talk about network structure modifications and the rising trend of IPoDWDM, illustrating theories with practical case studies at every step of the way.

Over two days, the Dni Światła will create a platform for data centre and telecom experts to share their knowledge, experience and inspiration. We will also present the latest, advanced solutions in data transmission, network optimisation and scalability. This year, the formula of the event will be further expanded to feature a panel debate with industry leaders.

Our talks and workshops will address the issues faced by our sector due to the current geopolitical situation, as well as the engineering challenges that network specialists especially have to contend with. As usual, we will also make sure that our participants can relax... In the evening, we will invite them to step into the world of the Orient Express. Surrounded by the magic of the most elegant train in history, they will get a unique chance to expand their network of professional connections.


Experienced data centre and telecom experts.

Grzegorz Róż
Grzegorz Róż
Director of Network Products Department

A manager and network expert, Grzegorz specialisesin LANs and wireless connectivity. His passion is to build connections between the needs of the client, the integrator and the DCN brand.

Łukasz Sukiennik
Łukasz Sukiennik
Director of Transmission Systems Department

An xWDM enthusiast andautomation engineer, he can talk about the most intricate projects in a very accessible way. A year ago, he took over the machine room of the Transmission Systems Department at Salumanus.

Andrzej Wojnar
Andrzej Wojnar
Director of Optical Transceivers Department

A data transmission expert, who will put your network on the right track. An experienced manager with a broad background in technology, Andrzej has spent his entire professional life working in dynamic IT environments.

Łukasz Bogdanik
Product Development

A specialist in intercontinental connections, Łukasz cooperates with optical module producers all over the world, analysing technology trends and translating them into product development.

Rafał Leśny
Rafał Leśny
Technical Support

An engineer at the Network Product Department, Rafał provides Salumanus clients with assistance to make sure their data transmission doesn’t get derailed and their data streams don’t get unexpectedly side-tracked.

Jakub Kolasiak
Junior Product

Part of a generation that no longer remembers a world without networks, Jakub is a talented and ambitious enthusiast of transmission systems, as well as an IT student who has been learning with Salumanus for the last three years.

Damian Pazulak
Product Manager

Aproduct manager at the Network Product Department. Damian’s journey into LANs and wireless communication started around a year ago. At Salumanus, he manages a network product group with Wi-Fi access points and switches.

Michał Owca
Product Manager

An experienced product manager at the Optical Module Department. During the 15th Days of Light, Michał will take you on board a real Luxtorpeda in the world of optical module programming devices, i.e. the GBC Photonics Smart Recode Device.

Kacper Czarnecki
Technical Support

An engineer at the Network Product Department. An experienced implementation and servicing specialist, he has worked with networks for overten years, making sure that data transmission runs according to schedule and preventing delays.

Why is it worth it?

Step into the future of optical systems. Take your network to a brand new level of technology.



09:00 - 10:00
Ticket control! | Registration and coffee to start us off on our journey.
10:00 - 10:15
15th Dni Światła – Official opening | Welcome on our train to 800G networks!
10:15 - 10:45
Powerup! The 400G is becoming standard and the 800G is already starting test drives!
  • The 400G transmission is appearing in the network infrastructure much faster than it was in the case of previous generations of transceivers. What do the latest standards hide and how to build the optimal path for new, faster transmissions?
  • What is the contribution of the CMIS management protocol/standard to this success?
  • How to prepare the network for fast migration to the highest 400G / 800G throughput?
  • Finally, something special - the presentation of a unique module that simplifies everything!
10:45 - 11:15
DCN devices – you’re on the right track.
  • Multi-layer LAN network architecture - benefits for users and administrators.
  • How to fully exploit the technological potential of network devices?
  • Interesting deployments of DCN solutions in customer networks.
11:15 - 11:30
Sidetrack: Koohot
11:30 - 12:00
The coffee machine rolls into the main platform.
12:00 - 12:30
Manage low capacity storage. Hook up to the 400G locomotive.
  • Aggregate 10Gb, 40Gb and 16FC, 32FC services to 100G, 200G, 400G transmission.
  • What are muxponders? Benefits of building networks based on these devices.
  • What makes a muxponder so universal that we can use it in almost any DWDM network?
  • Examples of implementations in customer networks.
12:30 - 13:00
GBC Photonics SRD – a real Luxtorpeda in optical transmission development.
  • The SRD environment is the repository of everything Salumanus has created in the field of compatibility throughout its history.
  • How does a multisystem, cloud-based environment that supports modules with SFP/SFP+/ SFP28/XFP/CFP/CFP2/ CFP4/QSFP+/QSFP56/ QSFP28/QSFP-DD interfaces work?
  • Benefits of using SRD Go applications.
13:00 - 13:15
Sidetrack: Koohot
13:15 - 14:15
Lunch served in the dining car!
14.15 - 15.00
Energy crisis, growing demand for capacity, pressure on price. How to respond wisely to the challenges in the telecommunications and data centre industry?
  • The future of the telecommunications and data centre industry is depend on simplifying network architecture and eliminating unnecessary equipment. Is this enough to minimise the impact of the energy crisis?
  • What does the change in network architecture entail for large organisations such as Orange, Exatel, Group Play, Akamai?
  • What does cooperation with large Data Centres look like from the operators' point of view? What bandwidths do Data Centres realistically rely on: 100G, 400G or maybe already 800G?
15.00 - 15.30
The coffee machine rolls into the main platform.
15.30 - 16:00
It's time for Wi-Fi 6. How do we improve the efficiency and security of wireless networks?
  • First class in wireless networks. What does stand Wi-Fi 6 out?
  • The evolution of security. Why do we choose WPA 3 these days?
  • Open networks, is it a good idea? How to use Captive Portal wisely?
  • Experiences and conclusions from DCN solution implementations.
16.00 - 16.30
Station: CASE STUDY. How to make sure your data transmission systems don’t get derailed?
  • Encryption, redundancy and diagnostics.
  • Ways to counter threats in long-distance transmission.
  • From simple solutions, such as the use of a redundant fibre optic line, to advanced methods, such as active devices for fibre optic monitoring and layer one encryption.
16.30 - 16.45
Sidetrack: Koohot
16.45 - 17.15
Q&A session
Station: Integration

The conductor's whistle and off we go! We will start our journey through time and space around European capitals from the capital of art. Next, it will only be tastier and more interesting, because we will stimulate all the senses. The smell of freshly brewed coffee, the taste of hot pepper and the sweetness of the cake will take us to the middle of a busy metropolis on the Orient Express route. Guides through the world of cuisine, elegance and art will ensure you have fun.

09:00 - 10:00
Registration | morning coffee

Registration and coffee for a good start to your journey.

10:00 - 13:00
Station: Workshop. Telegraphic DWDM... or train to speed.

Network building based on DWDM technology, universal optical transceiver and L2/L3 switch.

13:00 - 13:15
Workshop summary | End of the conference
13:15 - 14:15


We work together for the success of the network.