ExceLight Communications, Inc., is a wholly owned subsidiary of Sumitomo Electric Industries (SEI), Ltd. SEI is a member of the 400-year-old family of Sumitomo companies. SEI was established in 1897 to manufacture copper wire and has become one of the world's leading forces in the research and development of high-technology products and systems for the communications , electronics, energy, automotive, and materials industries. SEI oversees more than 200 subsidiaries and affiliated companies worldwide.

ExceLight is a provider of optical components and modules to the telecom, CATV, broadband, and data communications markets. Formerly the electro-optic products group of Sumitomo Electric Lightwave (SEL), ExceLight was established in August 2000. SEL is another subsidiary of SEI, established in 1983 in Research Triangle Park, NC, and is a TL9000 / ISO9001-certified industry leader in the manufacturing of innovative optical fiber and optical cable, cost-effective ribbon-configured solutions, cable assemblies, fiber management systems, fusion technology, and FutureFLEX^® Air-Blown Fiber Cabling Systems.

ExceLight offers a comprehensive array of transceivers, transmitters, receivers, lasers, photodiodes, GaAs integrated circuits, and passive components. Sumitomo Electric's world-class research and manufacturing capabilities in optical technology continue to expand and strengthen the product portfolio while maintaining industry-leading levels of reliability. The well-established global presence of SEI allows us to provide integrated support to customer facilities throughout the world.

ExceLight meets the evolving demands of the North American broadband communications market with a wider range of products, greater flexibility in meeting customer requirements, improved customer service, and high levels of technical support for all of the products offered.