Continuum Photonics Inc. of Billerica, Mass., and Polatis Ltd. of Cambridge, UK, finalized their merger in September. They will combine their personnel and product lines to create a single business, called Polatis Inc., which will provide a full range of optical switch components and systems for the defense, data networking and telecommunications industries. The new entity will maintain offices in the US and the UK. Continuum Photonics offers products based on its DirectLight switching technology, while Polatis contributes its microactuation and sensing system.