Optical Connections Magazine Spring 2023



Making fibre optic communications sustainable is vital to reducing the industry’s contribution to the reduction of global carbon emissions. The opportunities for carbon reduction across the industry are myriad, including supply chain management to component development and the switch to renewable energy, to name but a few. Peter Dykes looks at three examples of how some companies are approaching the challenge to become more sustainable, and how best to measure progress.

I t is generally accepted that the use of fibre optics is inherently more environmentally friendly than other network technologies for a variety of reasons, but we need to fully exploit the properties of the medium, argues Kelvin Hagebeuk, Marketing Manager for Test and Measurement at Yokogawa Europe. He says, “The world is facing many sustainability challenges, with climate change requiring us to make more efficient use of energy that is produced from greener sources. As a leading supplier of test equipment, Yokogawa knows that the Test and Measurement industry can help make the difference we all need to see. An example is the growing use of data from the Internet of Things, in cloud computing services, video broadcasting and conferencing, and the rise in access to mobile broadband - the Royal Society has estimated that digital technologies could be responsible for nearly 6% of greenhouse gas emissions. To avoid building more network infrastructure, which leads to more emissions in production and installation, we need to make better use of the fiber network we already have.” This, he explains, means getting more data through each ‘pipe’, using DWDM in which channels become ever more closely spaced. This makes it more difficult to separate the individual channels in the WDM analysis on an Optical Spectrum Analyzer or OSA. “To meet this need, Yokogawa has produced a new range of OSAs with

Combined with our high-speed data acquisition instruments such as the DL950 ScopeCorder, developers have a complete solution to evaluate the efficiency and performance of new and existing power technologies.” He says that developers of these systems also need a supplier that can integrate best- in-class hardware with advanced software solutions. Yokogawa’s experience of power measurements for transport and renewable sources such as wind turbines has led to the development of an integrated measurement platform that makes it easier to see results from different instruments. “This solutions experience is now benefitting power technologies used in telecommunications, helping developers improve their efficiency and performance,” he concludes. TOWARDS 100% RENEWABLE ENERGY On the subject of renewable energy, Coherent launched a major renewable electricity procurement program approximately three years ago as part of its commitment to reduce the environmental impact of its manufacturing operations. The company has sourced renewable electricity for dozens of its facilities worldwide at every level of its vertically integrated, global manufacturing base. For example, when a customer purchases a ROADM product from Coherent, all of the following manufacturing operations

unprecedented resolution, down to 5 picometers (pm), allowing optical signals in close proximity to be clearly separated and accurately measured. With a wavelength range of 1200 to 1650 nm, as well as the ability to alter the wavelength resolution from 5 pm to 2 nm, the new OSA can support a wide range of applications, from narrowband peak/notch measurements to wideband spectral measurements,” he says. But there’s more to be done. “As well as making their telecom systems more efficient by boosting data capacity, telecom operators are also looking to improve their environmental credentials by using renewable energy sources to power networks and data centres. Transport is also moving to electric power, which is increasingly generated from renewable sources and Yokogawa’s experience in providing precision measurement solutions for transport and renewable energy industries is also bringing benefits to telecoms. Yokogawa’s solutions allow our customers to expedite the development of the next generation of sustainable technology and innovation. One major challenge is that as power systems become more complex, analyzing them becomes increasingly difficult. New electric power sources such as fuel cells and high-density batteries make new demands on test and measurement equipment. Yokogawa is meeting these needs by developing Precision Power Measurement solutions.


| ISSUE 32 | Q1 2023


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