Product category:
Stand-Alone Instruments
News Release from: Exfo Electro-Optical Engineering
Edited by the Electronicstalk Editorial
Team on 08 March 2007
US patent protects optical network
tester
Specialist in fibre-to-the-home test and measurement systems receives US patent for pass-through measurement technique of traffic at different wavelengths
Exfo Electro-Optical Engineering has announced that an important patent related to its fibre-to-the-home (FTTH) test and measurement systems was assigned to the company on March 6, 2007 by the United States Patent and Trademark Office This patent entitled, "Method and Apparatus for Testing Optical Networks" (US patent no 7,187,861), serves as the basis of Exfo's series of passive optical network (PON) power meters designed for field-testing applications
This article was originally published on Electronicstalk on 14 Dec 2007 at 8.00am (UK)
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Chromatic dispersion can be characterised with high accuracy from a single fibre end and testing polarisation mode dispersion from a single end is also possible.
These test systems are widely used by technicians characterising FTTH PONs, particularly near the optical network terminal (ONT) at the customer premises where triple-play services need to be activated.
Exfo's patented technology enables pass-through measurements of both downstream and upstream optical power at different wavelengths, including that of "bursty" upstream signals.
Exfo is also seeking protection for this technology in a number of other countries throughout the world via corresponding pending national applications.
"Exfo was one of the first test and measurement companies to embrace FTTH technology and has brought to market an impressive number of innovative FTTH products during the past few years", says Etienne Gagnon, Exfo's Vice-President of Optical and Protocol Product Management.
"This latest innovation has really helped our customers speed up service deployment and activation for FTTH networks throughout the world".
"We felt that it was important to protect our investments in FTTH testing technologies, since we believe that we hold a dominant market share in this area".
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