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Technology Stocks : Corning Incorporated (GLW)
GLW 86.30-2.0%Dec 16 3:59 PM EST
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To: jack bittner who wrote (641)7/23/2000 8:11:00 AM
From: Wyätt Gwyön  Read Replies (2) of 2260
 
And I think when NT's Qtera group perfects solitonic transmission, a huge chunk of components will be obsolete.

Jack, I was wondering where you got your info on Qtera using solitons. At least one person was given the impression by Qtera engineers that Qtera is not into solitons. You might want to come up with some hard data before predicting the end of pumps. BTW, do you know who the leader in Raman is?

Message 14001520

To: Gary who wrote (15293)
From: Mr.Fun Thursday, Jul 6, 2000 11:13 AM ET
Reply #15295 of 15513

The Qtera engineers told me at OFC that they were not using solitons, rather that they were using raman amplification to achieve their distance between regeneration.
FYI Solitons are an alternative way to extend the distance between regeneration. The reason that signals need regeneration is as an optical pulse travels over a physical fiber the pulse changes shape, typically the leading edge travels slightly faster than the trailing edge due to refraction in the fiber. After 1000Km or so, the pulse becomes considerably more difficult to read and may bleed over into the previous pulse. Soliton technology resolves this by transmitting a pulse that is already distorted, but in a way that the natural refraction of the fiber brings the pulse into sharper focus rather than distorting further. As you can imagine, this is very difficult technology to implement. Research in soliton technology has gone on for more than a decade and there are still no commercial products.
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