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News and comments on community broadband networks, the communities deploying them and the technologies that support them. Published by Denise Frey and Al Bonnyman.

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Thursday, November 06, 2003


New CWDM standard approved

The ITU (International Telecommunications Union) has approved the G.695 standard for coarse wavelength division multiplexing:

"[The] ITU supports CWDM because it lets metropolitan fiber networks expand capacity at a cheaper price than the incumbent technology, called Dense Wavelength Division Multiplexing (DWDM). CWDM is cheaper because it allows greater spacing between channels on a fiber-optic line and, therefore, can handle less-expensive 'uncooled lasers.' Geneva-based ITU said operators using CWDM can reduce costs by 30 percent compared with DWDM products."


Light Reading also has a good article with links on CWDM.


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