UMC starts mass production of silicon photonics wafers at its Singapore operations, according to reports from Taipei Times and Seeking Alpha. The company is producing wafers designed for silicon photonics, a technology used to transmit data using light through silicon-based components. The move positions UMC to supply wafers for photonics-related manufacturing and development efforts, leveraging its existing semiconductor fabrication presence in Singapore. Both outlets describe the Singapore ramp as a transition from earlier development and pilot efforts toward higher-volume production, indicating that UMC is scaling its photonics wafer output. The coverage does not indicate a change in the company’s broader semiconductor strategy, but it frames the production start as a milestone in bringing silicon photonics fabrication capability to a manufacturing scale. The reports also reference the significance of silicon photonics for data center and high-speed communication markets, where optical interconnects are increasingly used to improve bandwidth and energy efficiency compared with purely electrical signaling.