PD-LD Awarded New Patent for Development in VBG Technology

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PD-LD Awarded New Patent for Development in VBG Technology Finding Increases Proficiency of VBG Elements Production

PD-LD, Inc., the worldwide leader in Volume Bragg Grating® (VBG®) technology, was recently awarded a U.S. patent for a new progression in the technology. The patent, which creates a more efficient way to produce VBG® elements, confirms the leading role of PD-LD in developing, using and promoting applications of this new and versatile technology.

U.S. Patent No. 7,477,818 protects the process of recording a master hologram onto a virgin recording wafer, comprised of a three-dimensional bulk of sensitized silica glass. The method uses a reference beam to produce a transmitted reference wave and a reconstructed object wave that interfere behind the master hologram to create a replica, thus eliminating the need to construct a new master hologram for production.

"Customers will not only benefit from a lower production cost, but a more consistent, better controlled product," said Dr. Boris Volodin, PD-LD's Chief Technical Officer. "By creating an exact replica of the master hologram, there is less chance for errors that might occur when creating a new one. This is a continuation of a series of patents that we have obtained to help streamline the manufacturing process."

This patent also discloses a variety of applications of VBG® elements, such as multiplexers and demultiplexers in communication networks, laser combiners in high power applications and sophisticated optical elements in scientific instrumentation.

"We are very pleased to add another important patent to our rich Volume Bragg Grating technology portfolio," said Dr. Vladimir Ban, PD-LD President and CEO. "This patent will make the basic methodology for producing VBG® elements much more efficient, making large volume manufacturing simpler."

More information about U.S. Patent No. 7,477,818 and PD-LD's wide range of products, services and patents can be found on the company's website, http://www.pdld.com.

About PD-LD
PD-LD, Inc., a photonic packaging company, headquartered in Pennington, N.J. is a U.S. manufacturer and assembler of pigtailed or receptacle mounted fiber coupled laser diodes, LED's, Detectors, high power pulsed lasers and bi-directional devices for the optical communications, test equipment and medical industries. Named one the fasted growing technology companies in N.J., PD-LD provides custom Volume Bragg Grating® (VBG®) elements and VBG stabilized lasers for a variety of applications including Raman Spectroscopy, High Power Lasers and Displays. For more information, visit http://www.pdld.com.

Tom DeBerardine
Executive VP of Sales
(tomd @ pd-ld.com)

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