MOUNTAIN VIEW, Calif., March 12 -- Spectra-Physics and NP Photonics have entered into a joint product development agreement with the aim of producing a new class of highly miniaturized, optical fiber-based amplifiers for telecommunications applications. In particular, the multiyear agreement calls for the two companies to engage in joint development, manufacture and marketing of products based on NP Photonics' erbium microfiber amplifier (EMFA) technology. This involves the use of a proprietary erbium-doped glass that produces extremely high optical gain over a very short length of fiber optic cable. Spectra-Physics said it will contribute its design and volume manufacturing capabilities in semiconductor pump lasers and fiber amplifiers. The goal is to produce a unique range of low-cost EMFA products primarily targeted at the metro and access markets, where component size is of particular importance, the company said.