4Wave Awarded Optical Multi-Filter Chip Patent

Patent Protects Key Optical Component Enabling 10-Gigabit

Ethernet Deployment on Multi-Mode Fiber

Nov 18, 2004, 00:00 ET from 4Wave Inc.

    STERLING, Va., Nov. 18 /PRNewswire/ -- 4Wave Inc. has been issued a patent
 on its innovative multi-filter chip, a product that will enable deployment of
 10-Gigabit Ethernet in metropolitan networks.
     U.S. Patent No. 6,819,871, titled "Multi-Channel Optical Filter and
 Multiplexer Formed From Stacks of Thin-Film Layers," is the 13th issued patent
 in the company's rapidly expanding intellectual property portfolio.
     This portfolio covers both the product itself -- the multi-filter chip --
 and the technology used to manufacture it.  This technology, Biased-Target
 Deposition (BTD), is a hybrid between ion beam deposition and conventional
 sputter deposition that combines the best of each technique and is uniquely
 suited to demanding applications requiring atomically engineered thin films.
     4Wave has two additional patents pending.
     "This latest patent is a major achievement for 4Wave as we move forward in
 developing the first prototypes of the multi-filter chip and look ahead to our
 commercialization strategy," said 4Wave President Sami Antrazi.
     Compared to today's products, 4Wave's multi-filter chip will be 250 times
 smaller, be far more reliable and fully compliant with IEEE standards for 10-
 Gigabit Ethernet transceivers.
     4Wave is currently developing prototypes of the multi-filter chip with
 support from a $2 million grant from the National Institute of Standards and
 Technology's Advanced Technology Program.
     A key advantage of 4Wave's multi-filter chip is that it makes it possible
 to deploy 10-Gigabit Ethernet on already installed multi-mode fiber in local
 area networks, wide area networks, and metro access.  It eliminates the need
 to install expensive, cumbersome electronics or to replace existing multi-mode
 fiber, offering a unique, cost-effective solution for the next generation of
 optical networks.
     About 4Wave Inc.
     4Wave is the premier developer of atomic layer engineering techniques
 through ion beam processing innovations used to manufacture a wide array of
 miniature optical components. 4Wave's expertise in ion beam and plasma
 processing systems, ion/electron/plasma sources, and in-situ process monitors
 for the etching and deposition of thin films has resulted in the development
 of the Biased Target Deposition (BTD) technique.  BTD is uniquely suited to
 demanding nanotechnology advancements in optical, semiconductor and magnetic
 device industries.  http://www.4waveinc.com

SOURCE 4Wave Inc.