The US Navy has awarded RSoft Inc. a two-year, $750,000 Phase II Small Business Innovation Research contract to develop simulation software for fiber optic communications systems and networks. Based on RSoft's LinkSIM, the tool will enable users to evaluate fibers and components for the design of cost-effective optical links. The software, which will be available commercially, will analyze single- and multimode systems and will provide a higher level of design accuracy. The Navy will use it to analyze and design components and systems, including those for Gigabit Ethernet and 10 Gigabit Ethernet.