Photop Technologies Inc., a maker of fiber optics, crystal materials, and optics and projection products, announced it is acquiring Optimal Coatech Corp. Ltd. (OPDM), a Guangzhou, China-based maker of optical thin-film filters. Its products include wavelength division multiplex (WDM), FTTx and infrared-cut filters. John Ling, CEO of Photop, said the acquisition will enable it to increase its photonics component and module manufacturing and will further its strategy of growth through acquisitions. Photop is based in Fuzhou, China, with a US office (Photop USA) in Sunnyvale, Calif. For more information, visit: www.photoptech.com