In-fiber optical components and subsystems vendor Southampton Photonics (SPI) has opened a specialty optical fiber manufacturing facility at Hedge End, near Southampton, UK. The plant, which represents an investment of approximately $10 million, occupies part of the company's new 30,000-square-foot premises and will primarily provide specialty fiber for use in its own products.. . .di/dt Inc. has selected Brilliant Technologies Co., a division of Macnica Inc., to sell and provide support for its DC/DC converters in Japan.