Eliyan Corporation says it has closed a $145 million Series C at a $1 billion valuation, with the round led by Seligman Ventures and joined by two new strategic investors drawn from optical networking: Cisco Investments and Lumentum. The Santa Clara company announced the financing on July 29, 2026, and said the capital will fund an expansion beyond its electrical chiplet interconnect business into electro-optical links for AI systems. Umesh Padval, managing partner at Seligman Ventures, joins…