The company specializes in developing passive optical components, including wavelength selective switches, wavelength blockers, edge wavelength selective switches, and ROADM modules with integrated power monitoring and muxes/demuxes. With its liquid crystal optical processors, Xtellus offers components and modules for reconfigurable optical networks using liquid crystal technology. Founded in 2000, the company is based in Morris Plains, New Jersey, with manufacturing and development facilities in Israel and South Korea. Additionally, Xtellus operates a research and development facility in Jerusalem, Israel. As of December 17, 2009, it operates as a subsidiary of Oclaro, Inc.