Frank Coluccio Technology Forum - ASAP Message Board

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Technology Stocks : Frank Coluccio Technology Forum - ASAP

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To: Frank A. Coluccio who wrote (448)	11/24/1999 2:15:00 PM
From: Jay Lowe	of 1782

re: wet power How are such things currently handled? Are you envisioning more abundant wet power enabling soliton conditioning? I wonder if there are purpose-built battery technologies ... all that sodium is enticing, eh? NTT's team set up a 250-km dispersion-shifted optical fiber loop for the experiment. It achieved the 40-Gb/s signal by superimposing four 10-Gb/s soliton units at slightly different amplitudes, a technique that also reduces soliton-soliton interaction. Every time the transmission traveled 250 km through the loop, the signal was subjected to soliton control and narrowband filtering. The 40-GHz clock signal was extracted with an ultrahigh-speed photodetector. This signal was then used to drive the lithium-niobate modulator that performed the soliton control. Without soliton control, noise and timing jitter increase the bit error rate rapidly when transmission goes beyond 4500 km, Nakazawa said. "But when we employed soliton control, the maximum transmission distance could be extended to 70,000 km."

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