Advanced Photonix, Inc. (API) is engaged in the development and manufacture of optoelectronic devices and sub-systems and systems. The Company serves a range of global original equipment manufacturers (OEMs) in a range of industries. API supports its customers from the initial concept and design phase of the product, through testing to full-scale production. API is a test and measurement company that packages optoelectronic semiconductors into high-speed optical receivers (HSOR products), custom optoelectronic subsystems (Optosolutions products) and Terahertz instrumentation (THz products), serving a range of global markets. API has two manufacturing facilities located in Camarillo, California and Ann Arbor, Michigan. Its products serve customers in a range of markets, such as test and measurement, telecommunications, military and medical in North America, Asia, Europe and Australia.