WILMINGTON, Mass., Dec. 7 -- kSARIA Corp., manufacturer of fiber optic components assembly systems, said it has raised $20 million in second-round venture funding. The latest investment follows an initial $15 million in venture funding nearly a year ago. kSARIA's second financing round was led by Advent International in Boston, joined by kSARIA's first-round investors: North Bridge Venture Partners, US Venture Partners, Boulder Ventures Ltd. and Spinner Asset Management LLC. 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