BURLINGTON, Mass., Oct. 6 -- CyOptics Inc. has completed a $57 million round of funding led by Cisco Systems. The financing will go toward product development, increased expansion of the company's manufacturing facilities and customer support infrastructure, said CyOptics. CyOptics has raised more than $77 million since its opening. Teaming-up with Cisco Systems during CyOptics' latest round of funding was Intel Capital and Vitesse Semiconductor. All of CyOptics' original investors participated as well. I am proud to have this superb group of corporate investors, each a leader in its market, participate in this round of equity financing. We expect these companies to provide tremendous added value as business partners or technology advisors. said Eran Yarkoni, CyOptics president. CyOptics designs, manufactures and markets high-performance optical networking components for the Internet and telephony infrastructure.