January 12, 2006 Copenhagen, Denmark -- Ibsen Photonics, a supplier of holographic phase masks, transmission diffraction gratings, and optical spectrometer modules based on diffraction gratings, has been granted United States Patent #6,978,062, titled "Wavelength Division Multiplexed Device."

The company says the technology in the patent is based on using multiple transmission gratings to provide high dispersion, while at the same time taking advantage of the beam-folding properties of transmission gratings to create compact module designs.

"Our optical module products - for example, our FBG sensor system interrogators and DWDM optical channel monitors - are uniquely high performance and simultaneously compact," comments Bjarke Rose, spectrometer module product manager at Ibsen. "Our internally produced fused silica transmission gratings are instrumental, as they exhibit exceptional angular tolerance."

"This is a prime example of how our strategy of combining world-leading grating technology with innovative optical design capabilities allows us to offer optical spectrometer modules with great performance, on points that, by traditional thinking, require trade-offs," concludes Torben Jacobsen, Ibsen's president and CEO.