The Company

DIAMOND the fiber meeting


About us

Diamond USA's focus relates exclusively to interconnect solutions within the fiber optics industry. We understand that quality and reliability are a crucial and integral part of overall system performance and longevity. Diamond USA is a senior player and has established a world-class reputation within the fiber optics arena.

Diamond USA’s Billerica, MA production facility has grown tremendously since its inception in 1992. We employ state-of-the art methods and techniques to ensure high quality and performance products. Our production facility utilizes Diamond’s patented "Active Core Alignment" process, which minimizes fiber core offset. Value-added services are also offered, such as connectorization of active or passive optical components, photonic modules and fiber management assemblies.

Diamond USA continues its commitment to provide our customers with the best products and services available in the industry. In order to meet the ever changing needs of our customers, exploration of state-of-the art technologies and development of cutting edge products are continuously pursued.


Diamond has grown from modest beginnings, having been established in 1958 as a machinist of ultra-hard materials and a manufacturer of industrial jewels, record player styluses, and other high-precision components. The experience gained in these endeavours formed the basis of the company's expertise in precision machining and volume production, expertise which has been systematically expanded and perfected over the years.

Market leader

The demand for diversification led Diamond into the exciting, growth-intensive field of fiber optics, where the company quickly established an internationally-recognized reputation as an innovator. Diamond is the world's leading manufacturer of high-precision fiber optic products, and successfully serves several markets in numerous countries worldwide.


Diamond products meet the highest demands of our customers and have won loyal acceptance from users around the world. Our status as the preferred supplier at numerous leading manufacturers attests to the soundness of this strategy. In addition to our broad array of standard products, Diamond is also renowned as a dynamic, innovative partner, able to develop custom-tailored solutions in response to customer demands.

Quality management

The quality of our products and processes are overseen by a quality management system complying with ISO 9001 and ISO 14001. These certifications have been attained in order to make Diamond a more effective and competitive partner to our customers.


Since the dawn of mankind, nature has provided models to help explain complex phenomena and relationships. Observation of the principles of nature, and the pursuit of their underlying causes, forms the basis for discovery and innovation. Sometimes, those innovations are even more fascinating than what nature itself has created. Optical fiber technology provides a good example. By taking advantage of the properties of glass, it has become possible to efficiently transport unprecendented amounts of information through hair-thin fibers. Information which has helped make our lives simpler, safer and more enjoyable.