Kyoto Semiconductor was founded in 1980 in Kyoto specialized as optical semiconductor manufacturer. In these 40 years, our solutions have received high praise from customers around the world for reliable technical capabilities and excellent quality. We design and manufacture compound semiconductors for optical communication and optical sensing. Now that the optical semiconductor is positioned as a key technology in the 5G and IoT systems, we lead optical device solutions with best-in-class technology and Japan quality manufacturing.