PASADENA, Calif., April 25 -- Tunable Photonics Corp. has closed its Series A round of financing with a total of $7 million in venture capital financing. Blueprint Ventures of San Francisco and Forrest, Binkley and Brown of Newport Beach, Calif., each invested $3 million, with The United Co. of Bristol, Va., providing $1 million. Tunable Photonics produces components for fiber optic communications. Its products include a wavelength locker and wavelength mapper for widely tunable lasers, which are expected to displace fixed wavelength lasers in the dense wavelength division multiplexing market, the company said.