These companies are involved in the development, manufacture, and sale of fiber optic communications products. Annual spending on fiber and optical components is expected to reach $23 billion by 2003 while optical equipment sales are expected to grow to $45 billion in 2004. Several subgroups have been broken down because the demand for bandwidth is simply growing too rapidly to ignore. You might be interested in the components of the Philadelphia Fiber Optics Index. Please look into the DWDM List, the Fiber Optics Components List, Fiber Testing and Measurement List, the Fiber Optics Cable Producers List, the Fiber SANS List, the Photonic Switch List the iTM Internet Traffic Management List and the Gigabit Ethernet List. You may also want to check our other lists associated with Broadband Communications which can be found on the Cable Modem Related Stocks List, the DSL or Digital Subscriber Lines List, the Satellite Communications Systems List and the Interactive TV List.