The data center industry is increasingly looking toward photonics—the use of light to transmit data—as a potential successor to traditional copper wiring. Currently, data centers rely heavily on copper for electrical infrastructure and network connections, with a typical 100MW facility utilizing approximately 400 tonnes of the metal. Industry leaders, including Chris Sharp of Digital Reality, suggest that moving away from copper could address significant bottlenecks in data processing speeds.

By utilizing photons instead of electrons, data centers could benefit from reduced heat generation, which in turn lowers the energy required for cooling systems. Callum Littlejohns, deputy director of Cornerstone Labs, noted that this shift could lead to substantial energy savings while also increasing data capacity by allowing multiple streams to travel through a single channel.

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While the technology has been studied for years, experts like Peter O'Brien of the Tyndall Research Institute believe it is now ready for widespread commercial application, bolstered by support from companies like Nvidia. However, the transition faces hurdles. Andrew Wheeler of Hewlett Packard Labs pointed out that optical components are sensitive to heat, creating reliability concerns in environments where other hardware continues to generate high temperatures. Furthermore, the industry must overcome manufacturing cost challenges and the need for specialized training for engineers tasked with installing and maintaining delicate fiber-optic systems.

Looking ahead, some innovators are pushing for a future where data is processed entirely in the optical domain. Ofer Shapiro, CEO of Resolight.ai, argues that eliminating the need to convert data between photons and electrons would maximize energy efficiency. For now, manufacturers are focusing on scaling production, in some cases repurposing older silicon manufacturing equipment to make photonics components more cost-effective.

Source: BBC News