In Brief

NOVATO, CA: Porchivina & Associates PR, a hi-tech communications agency, has added three new clients to its Marin County practice: Iolon, a designer and manufacturer of tunable optical components for single mode fiber optic networks; The Optical Internetworking Forum, a nonprofit that helps to advance the standards and methods of optical networks; and 3DMetrics, a start-up that specializes in precision 3D imaging and measurement technology of live subjects.