Search Menu
Photonics Media Photonics Marketplace Photonics Spectra BioPhotonics EuroPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook

Sunburst Masking Technique for 'Chirp' Gratings Patented

Facebook Twitter LinkedIn Email Comments
CHATSWORTH, Calif., April 15 -- Sabeus Photonics Inc., the technology leader in the design and manufacture of high-concept optical components, acknowledged it has been granted a US patent for a high-concept manufacturing technology that makes possible the cost-effective production of high-precision, wideband, in-fiber dispersion compensation filters. Such filters are of critical importance in the optical communications network, where they are used to counteract the loss of integrity in signals traveling through an optical fiber.

Sabeus also announced it has closed its C Round of funding totaling $21 million .

The Sabeus patent describes a "sunburst" masking methodology, using a variant of a circular phase mask with radially inscribed patterns, that can be used in a volume manufacturing environment to continuously write very short-period gratings (Bragg gratings) of varying periods and refractive indexes into lengths of fiber substantially in excess of 1 meter in length. The patent discloses significant refinements to earlier techniques that make its use in such environments particularly attractive, Sabeus said.

The patent, U.S. 6,344,298, describes a variety of different schemes for fabricating the masks, each of which has utility in achieving a particular performance characteristic in the completed filter.
Apr 2002
CommunicationsindustrialNews & Features

view all
Search more than 4000 manufacturers and suppliers of photonics products and services worldwide:

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2021 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, [email protected]

Photonics Media, Laurin Publishing
x We deliver – right to your inbox. Subscribe FREE to our newsletters.
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.