Long wavelength VCSELs operating at 1300 nm and 1550 nm are in preproduction phase. "Early production deployments are expected by 2003, when the new VCSELs are proven reliable and new transceiver designs are slated to take advantage of these components," ElectroniCast Senior Analyst Saba Hailu said. "The use of long wavelength VCSELs in transceiver applications will be at 1310 nm. The current direction of 1550 nm VCSELs is to long haul and DWDM applications, most typically as a separate component in tunable products and as pump devices in amplifiers. Transceivers operating with VCSELs at 1310 nm will not create a new application space. All such applications are expected to be singlemode. They will compete with traditional low-cost Fabry-Perot edge emitters, and to uncooled DFB edge emitters. Their penetration will be in applications where single mode transceivers are already being deployed, such as in Gigabit Ethernet and Fibre Channel," Hailu said.