COLORADO SPRINGS, Colo. Cortina Systems Inc., known to many in the networking industry as the co-developer of the Interlaken interface with Cisco Systems Inc., has bid its way into passive-optical-networking markets with the acquisition of ImmenStar Inc. for undisclosed terms.
Founded in May 2004, ImmenStar develops chips for both Gigabit/broadband PONs and Ethernet PONs.
Since 2005, Cortina has broadened from a focus on Ethernet to provide a range of high-speed networking ICs. Two years ago, it gained traffic-management expertise with the acquisition of assets from Azanda Network Devices Inc. Last fall, Cortina acquired
Intel Corp.'s optical-components business, which included the physical-layer chips of the former Level One Communications Inc.
Zino Chair, co-founder and vice president of marketing at Cortina, said the company had been considering a move into PON chips for several months. ImmenStar's focus on both GPON and EPON and its operation in Hsinchu, China, were attractive elements, Chair said.
"Most of the design and development team for ImmenStar is in Sunnyvale, not China, so we can bring them in to headquarters easily," Chair said. "But the China operations are significant."
Chair said ImmenStar developed a unique quality-of-service and bandwidth management architecture in its MuLAN EPON chip set that has been field proven in several deployments in Asia. A dual-mode EPON/GPON chip set, Turandot, is under development.
Several communications IC companies have been bidding their way into PONs in recent months. PMC-Sierra Inc. acquired Passave Inc. last year, and Mindspeed Technologies has signed a development pact with PON OEM Terawave Communications Inc.