We Continue the Work of Those
Who Were the First.

  • Electrotechnics
  • Electrical Engineering
  • Light & Lighting
  • Power Engineering
  • Transportation
  • Automation
  • Communication
  • Smart Buildings
  • Industry
  • Innovation

Current issue

ELEKTRO 7/2021 was released on October 1st 2021. Its digital version will be available on November 1st 2021.

Topic: Power engineering; Electricity quality; Renewable Energy

Main article
Local specifics of South-Bohemian region regarding usage of alternative fuel cars

SVĚTLO (Light) 4-5/2021 was released 9.17.2021. Its digital version will be available 9.17.2021.

Lighting installations
Lighting reconstruction of underpass and platforms of Ústí nad Orlicí railway station

Public lighting
The lighting of park at Episcopal Residence of Ostrava-Opava in Ostrava
Outdoor lighting systems and intrusive light
Generel of public lighting 9th part
Environmental viewpoint

Lasers capable of transmitting signals at 224 gigabits per second

7. 6. 2021 | Phys.org | www.phys.org

With the massive proliferation of data-heavy services, including high-resolution video streaming and conferencing, cloud services infrastructure growth in 2021 is expected to reach a 27% CAGR. Consequently, while 400 gigabit ethernet (GbE) is currently enjoying widespread deployment, 800 GbE is poised to rapidly follow to address these bandwidth demands.

One approach to 800 GbE is to install eight 100 gigabit per second (Gbps) optical interfaces or lanes. As an alternative to reduce the hardware count, increase reliability, and lower cost, a team of researchers at Lumentum developed an optical solution that uses four 200 Gbps wavelength lanes to reach 800 GbE.

Fast ethernet

To achieve high speed, high bandwidth operations, the team developed a lumped-element (LE) electroabsorption modulator-integrated distributed feedback (EA-DFB) laser capable of 2-kilometer transmission—a transmission length requirement for many modern large data centers—of 224 Gbps signals operating over a wide temperature range. Compared to a conventional EA-DFB, the LE EA-DFB's reduced capacitance and inductance resulting from design and assembly optimizations in the EA modulator improves its power and bandwidth.

Read more at Phys.org

Image Credit: Unsplash

-jk-