High-reliability, High-performance 25 Gb/s Directly Modulated Uncooled Lasers for 5G Wireless Communications

Abstract

Semiconductor laser diodes are important components for fifth-generation wireless technologies. To meet 5G wireless specifications, ever increasing performance and reliability requirements of each component become necessary to guarantee uptime air service. In this paper, we present highly reliable 25G DFB uncooled lasers that exhibit low threshold current, high single-mode, high bandwidth, and excellent eye pattern for uncooled operations of -40 to 85°C. Ultra-high component reliability is demonstrated to ensure stable operations for 5G mobile communications.