(Telecompaper) Infinera has announced an agreement to buy Coriant for a total of USD 430 millon, saying the deal will create one of the world's largest optical network equipment provider. CEO Pat DiPietro said the combined entity will benefit from Coriant's investments in software automation and open, disaggregated systems. Coriant has put USD nearly USD 1 billion into R&D over the last five years. Infinera will be acquiring a debt-free balance sheet and expects cash flows to pay back the transaction consideration within three years.