Redfern Integrated Optics, Inc. (RIO) develops and manufactures light sources and subsystems based on its proprietary planar external cavity laser technology (PLANEXTM), which delivers unique price-performance advantages in multiple markets. RIO's product lines include 1550nm single frequency narrow linewidth lasers and modules with very low noise, unparalleled wavelength stability, low cost, small size, low power dissipation, and Telecom grade lifetime reliability.