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• DFBs are the most common transmitter type in DWDM-systems.
• DWDM is a new technology; early installations just got under way in 1996.
• "DWDM is taking a hit like everyone else, " he said.
• For example, in most DWDM equipment, the standard channel spacing is 100 GHz.
• The payoff from DWDM is enormous.
• The 1, 056-km, 80 Gbit / s link is based on DWDM technology.
• DWDM circuits are the basis for all modern submarine communications cable systems and other long-haul circuits.
• These factors of smaller volume and higher performance result in DWDM systems typically being more expensive than CWDM.
• BCIX currently operates a Arista Networks and Dell Force10-based infrastructure with DWDM links between six sites:
• And Sprint Laboratories in Burlingame helped start the commercial DWDM market by working closely with Ciena on its systems.
• The major long-distance carriers began investing heavily in DWDM equipment last year to leverage their existing fiber investments.
• A 40G pipe can carry 40 different channels as a result of Dense Wave Division Multiplexing ( DWDM ) transmission.
• Today's DWDM systems use 50 GHz or even 25 GHz channel spacing for up to 160 channel operation.
• In the laboratory, researchers have produced DWDM systems that carry more than 2 terabits, or trillion bits, per second.
• Qwest Communications is exploiting DWDM technology to build a fifth coast-to-coast fiber optic network across the United States.
• Recent innovations in DWDM transport systems include pluggable and software-tunable transceiver modules capable of operating on 40 or 80 channels.
• Until 2011 the backbone network in Russia was based on DWDM technology with a capacity of 10 and 40 Gbit / s.
• This process, called dense wavelength division multiplexing, or DWDM, now allows carriers to transmit at least 16 channels per fiber.
• DWDM systems have to maintain more stable wavelength or frequency than those needed for CWDM because of the closer spacing of the wavelengths.
• Following the August 2011 trial in Russia, Huawei reported paying 100 Gbit / DWDM customers, but no 100GbE shipments on NE5000e.