BRUSSELS (Reuters) - EU antitrust regulators are set to clear without conditions Nokia's $2.3 billion acquisition of U.S. optical semiconductors and networking equipment maker Infinera ( INFN ), people with direct knowledge of the matter said on Friday.

Nokia announced the deal in June last year, a move that would make it the second largest vendor in the optical networking market with a 20% share, behind Huawei, which is benefiting from the minimal presence of Western companies in China.