Coset, Inc.

Coset is a pioneering optical parts manufacturer, leading the industry with cutting-edge 400GBE plus transceiver-ready solutions for over 20 years. Our commitment to innovation is evident in our diverse product line, including TOSA/ROSA products and high-power lasers. With state-of-the-art manufacturing facilities in Gwangju, South Korea, we deliver top-quality semiconductor diode chips and optical transmission parts with unmatched reliability. At Coset, technology and customer service are paramount.

Our dedicated teams ensure efficient and cost-effective solutions tailored to our clients' needs, backed by over two decades of experience. From initial design to final delivery, our rigorous quality control processes guarantee excellence at every step. Partner with Coset for industry-leading optical solutions and exceptional customer care. Contact us today to experience the Coset advantage.