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Technology Stocks : Ciena (CIEN)
CIEN 208.74+4.8%Nov 10 4:00 PM EST

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To: jghutchison who wrote (9961)12/12/2000 1:13:04 AM
From: mact  Read Replies (1) of 12623
 
As the channel spacing narrows, its ability to carry the bit rate is reduced. In theory, a 1G channel spacing is limited to a 1G bit rate. The bottom line is that we are quickly approaching fundamental limits of bandwidth over fiber.

Ciena has announced that it will have a 320 channel system next year using its proprietary Bragg fiber grating technology.


perhaps we are approaching the limits bandwith per fiber but prob. not...new tech's emerging everyday...by next yr, avnx and other vendors will offer 800-1000 channel systems that will carry 2.5Gbps each...with 860 fibers per cable, bandwith will be plentiful...matter of fact, it will be in the petabit/sec range, which is close to the total internet traffic per month just a yr or two ago...avnx and other co's also working on RF sub-channels that will split the lambda another 100-1000 fold...and with tunable lasers on the horizon by altitun, new focus and several others, bandwith might get so plentiful that the need for pure optical switches might not be needed as much...also, imo fiber-bragg, thin film filters and awg tech. has limitations...i think fabry-perot inferometer techn. has advantages.

mact
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