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REDWOOD CITY, Calif. – August 26, 2014 –According to a newly published report by Dell’Oro Group, the trusted source for market information about the networking and telecommunications industries, the wavelength division multiplexer or WDM market grew 10 percent year-over-year in the second quarter reaching a new record revenue level of $2.6 billion.

The WDM market comprises both long haul and metro applications.  In the second quarter of 2014, dense wavelength division multiplexer (DWDM) long haul equipment revenue grew 18 percent year-over-year, and WDM metro equipment revenue grew 4 percent year-over-year.

“The WDM market growth isn’t slowing down,” said Jimmy Yu, Vice President of Optical Transport research at Dell’Oro Group.  “The recent second quarter growth of 10 percent marked the eighteenth consecutive quarter that the WDM market has increased.  Furthermore, as an indication of the market’s strength, twelve of those eighteen quarters grew at double-digit percentage rates.  A number of factors are driving the strong growth of WDM; the most significant of which is the global adoption and penetration of 100 Gbps wavelengths in long haul applications.  It’s also one of the reasons why DWDM long haul equipment revenue growth rates have been outpacing that of WDM metro equipment for the past two years,” added Mr. Yu.

About the Report

The Dell’Oro Group Optical Transport Quarterly Report offers complete, in-depth coverage of the market with tables covering manufacturers’ revenue, average selling prices, unit shipments (by speed including 40 Gbps, 100 Gbps, and >100Gbps).  The report tracks DWDM long haul terrestrial, WDM metro, multiservice multiplexers (SONET/SDH), optical switch, and optical packet platforms.  To purchase this report, call Julie Learmond-Criqui at +1.650.622.9400 x244 or email

About Dell’Oro Group

As the trusted source for market information about the networking and telecommunications industries, Dell’Oro Group provides in-depth, objective research and analysis that enables component manufacturers, equipment vendors, and investment firms to make fact-based, strategic decisions.  For more information, contact Dell’Oro Group at +1.650.622.9400 or visit