Tue 21-09-2004	Ibsen Photonics
	Ibsen Photonics has been awarded patent for innovative gratings with unique efficiency and reliability properties - Fusion bonded gratings create high-efficiency, polarization controllable gratings with highly protected surfaces. Read more here

- Fusion bonded gratings create high-efficiency, polarization controllable gratings with highly protected surfaces.

Ibsen Photonics, a leading supplier of holographic Phase masks, transmission diffraction gratings and OEM spectrometer modules based on diffraction gratings, today announced that it has been granted United States Patent # 6,762,880, titled "Grating Structures and Methods of Making the Grating Structures".

This technology enables pure fused silica transmission grating designs with beneficial optical properties. Design possibilities include polarization and temperature independence combined with highly robust grating surfaces.

"The beauty of these gratings lies in their simplicity - everything comes together by simplifying rather than complicating the processes. A whole range of applications - including telecom - can draw benefits from this new grating design and manufacturing methods" says Johan Holm, primary inventor and grating process manager at Ibsen.

Bjarke Rose, Spectrometer Module Product manager at Ibsen, expands: "Ibsen has a unique profile working with diffraction gratings as well as spectrometer modules. This vertical integration allows us to both identify and develop unique and advantageous gratings and pass their benefits on to our module customers".

A prime aspect of the invention described in the patent is very deep (high-aspect ratio) gratings for diffraction efficiency and polarization control, while a second aspect - fusion bonded grating structures - offers temperature independence and surface robustness.