Tejas optical netowrking products are based on Dense Wave Division Multiplexing ( DWDM ), Optical Transport Networks ( OTN ), Packet Transport Networks ( PTN ) and Synchronous Digital Hierarchy ( SDH ) or synchronous optical networking ( SONET ) Technology.
22.
Ciena is the first company to market with a technology called wave division multiplexing, or WDM . The technique is roughly equivalent to using a bundle of flashlights _ each with different colored light _ in place of a single flashlight to transmit data through fiber-optic networks.
23.
But the Microsoft trial is a big vote of confidence in the optical networking group at Nortel, the former Northern Telecom Ltd . Nortel is locked in battle against companies including Lucent Technologies and Ciena to become the leader in a new sort of communications technology called wave division multiplexing.
24.
But through the wonders of " dense wave division multiplexing " and lasers that transmit 10 billion blips of light per second ( soon to be 40 billion ), equipment suppliers such as Alcatel, Nortel Networks, and Lucent Technologies have enabled carriers to run the equivalent of about 10, 000 trains an hour down each track, fostering ruinous price wars for bandwidth capacity.
25.
In late 1994, during the transition of the first high-speed optical backbone from public sector control of the National Science Foundation to private companies, Ciena began working with Sprint an earlier carrier of Internet traffic to develop " high-capacity fiber optic transmission systems called dense wave division multiplexing ( DWDM ) . " The outcome of their effort was the first commercial dense wave division multiplexing system.
26.
In late 1994, during the transition of the first high-speed optical backbone from public sector control of the National Science Foundation to private companies, Ciena began working with Sprint an earlier carrier of Internet traffic to develop " high-capacity fiber optic transmission systems called dense wave division multiplexing ( DWDM ) . " The outcome of their effort was the first commercial dense wave division multiplexing system.
