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Technology Stocks : Lucent Technologies (LU) -- Ignore unavailable to you. Want to Upgrade?

To: Mr.Fun who wrote (15295)	7/6/2000 11:24:43 AM
From: The Phoenix	Respond to of 21876

Mr Fun, Thanks - yes I'm familiar with dispersion and attenuation issues and the loss of shape (degradation of the eye) in light transmission... But I had never heard of a soliton. Your explanation however leaves a lot out. How does a soliton use the fiber refraction to improve a wave? Any idea how this works? I'm familiar with raman amplification and using bidirectional light to boost signals for 40G applications.

To: Mr.Fun who wrote (15295)	7/6/2000 3:43:07 PM
From: fiberman	Respond to of 21876

Something just stinks here!!! If LU meets the numbers, or God forbid missed the numbers for the quarter, then we will see 30s for sure, IMHO. BWTFDIK!!!!

To: Mr.Fun who wrote (15295)	7/7/2000 9:56:56 PM
From: Wyätt Gwyön	Respond to of 21876

Mr. Fun, Thanks for the info on solitons and Qtera. Here is a description of solitons from Jeff Hecht's Understanding Fiber Optics: Certain optical transmitters can generate special pulses called solitons, which retain their shape as they travel through optical fibers. Technically speaking, a soliton is a special solution of a complex equation for wave propagation, the sort of thing that normally belongs to esoteric theory. However, solitons have a special property that makes them attractive for fiber-optic transmission: they conserve their shapes, although their intensity drops because of attenuation. Solitons work because two effects occur in optical fibers that serve to offset each other. One is the pulse dispersion you learned about earlier, which causes pulses containing a range of wavelengths to spread out as they travel along a fiber. The other is called self-phase modulation, which spreads the pulse out over a range of wavelengths. The two balance each other out, so once the pulse comes into equilibrium in the fiber, it retains its shape. Attenuation does weaken the pulse, but optical amplifiers can restore its strength. The self-restoring nature of solitons make them attractive for high-speed transmission over tremendous distances.

To: Mr.Fun who wrote (15295)	7/12/2000 3:38:44 PM
From: Mighty Mizzou	Respond to of 21876

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. Sounds like me pointing a little to the left to compensate for my slice in golf. LOL! Hey MF, TP asked if your fund was adding some more LU. Could you expound on this for us? After the T warning I bailed on LU but Im still a believer and looking for another entry point. TIA.