Have you looked at Cisco? Raptor Networks? Juniper? Allied Telesyn? Have you talked to a line provider such as Sprint or AT&T for advice? Or a systems vendor? Did you even do a Google search?
Cisco provides, for example, the 3750 line of routers from 12-48 Ethernet 10/100 ports that connect via a XENPAK module to 10Gb SMF.