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Scientists Overcome One of the Biggest Limits In Fiber Optic Networks
Mark.JUK writes: Researchers at the University of California in San Diego have demonstrated a way of boosting transmissions over long distance fiber optic cables and removing crosstalk interference, which would mean no more need for expensive electronic regenerators (repeaters) to keep the signal stable. The result could be faster and cheaper networks, especially on long-distance international subsea cables. The feat was achieved by employing a frequency comb, which acts a bit like a concert conductor; the person responsible for tuning multiple instruments in an orchestra to the same pitch at the beginning of a concert. The comb was used to synchronize the frequency variations of the different streams of optical information (optical carriers) and thus compensate in advance for the crosstalk interference, which could also then be removed.
As a result the team were able to boost the power of their transmission some 20 fold and push data over a "record-breaking" 12,000km (7,400 miles) long fiber optic cable. The data was still intact at the other end and all of this was achieved without using repeaters and by only needing standard amplifiers.
As a result the team were able to boost the power of their transmission some 20 fold and push data over a "record-breaking" 12,000km (7,400 miles) long fiber optic cable. The data was still intact at the other end and all of this was achieved without using repeaters and by only needing standard amplifiers.
It is the duty of the concertmaster, not the conductor, to tune an orchestra.
I thought the conductor just waved a baton in some strange patterns and got paid handsomely for that. He is so ashamed for getting paid so much for doing so little he does not dare show his face to the audience, and turns his back to them. Never knew it was his job to tune all the instruments of the entire orchestra before the concert.
sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
The conductor tunes absolutely no instruments unless he is simultaneously conducting and soloing. The individual instrumentalists tune their own instruments. The "A" is initially determined by the oboist. The conductor may instruct the oboist to play an "A" that is a bit high such as 445 for particular works but this instruction would be shared prior to the actual stage appearance.