Patent Protects 'Dicing' Technology for RGB Lasers
PD-LD Inc. of Pennington, N.J., announced that the US Patent and Trademark Office recently granted it a patent pertaining to its volume Bragg grating (VBG) technology, used in applications including Raman spectroscopy, high-power lasers and displays. Patent No. 7,125,632 protects a method of mass-producing VBG elements based on separating (or “dicing”) a VBG wafer into smaller identical elements with the same properties as the starting wafer. The technology will be used primarily in RGB (red, green, blue) lasers and display applications. PD-LD was previously granted two other VGB-based patents. The company manufactures fiber-coupled laser diodes, LEDs, detectors, high-power pulsed lasers and bidirectional devices for the optical communications, test equipment and medical industries.