Symmorphix said Tuesday it received $13 million for purchasing equipment, with Dominion Capital Management as the lead investor along with GATX Ventures and Third Coast Capital. Symmorphix, a components maker that provides amplification where needed in an optical network, plans to use the funds to buy manufacturing equipment and expand its facilities. In November, the Sunnyvale, Calif.-based company received $25 million in first round funding from Battery Ventures and Crescendo Partners.