OTTAWA, Ontario and PLEASANTON, Calif., Jan. 17 -- Trillium Photonics Inc., an optical systems company, announced it has received $29 million in second-round financing, led by Spectrum Equity Investors along with JK&B Capital, Mitsubishi Corp's US subsidiaries and continuing investor Mohr, Davidow Ventures. Trillium said it plans to use the new capital to increase its investment in product development and to expand sales, marketing and manufacturing.