Overcoming Thermal and Optical Feedback Challenges with 1310 nm Quantum Dot Lasers

25 July 2025

Semiconductor lasers in a wavelength range around 1310 nm are widely used as light sources for intra- and inter-data center optical communications. In recent years, it has also been introduced as a light source for silicon photonic circuits called silicon photonics. In addition, a new application of silicon photonics "LiDAR" is emerging to realize autonomous driving and advanced robotics. The requirements for semiconductor lasers for these applications are high reliability in high temperature environments and high tolerance against external optical feedback. We are developing and manufacturing quantum dot lasers that can meet these demands.