TeraBeam Message Board - Msg: 13278388

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To: moat who wrote ()	3/24/2000 7:13:00 PM
From: Leigh McBain	Read Replies (2) of 227

Some interesting posts. The beams in an optical environment are indeed smaller at the transmitter than at the receiver. The statement that anything less than 85% occlusion simply refers to the concept that if 15% of the beams path is clear there should be sufficient signal strength at the receiver to be able to maintain data flow. The different sectors within a single beam do not transmit different data, the beam is the data so you do not wind up with 15% of the transmission speed. The simple fact is that if a solid object, large enough to effectively block the entire beam, is positioned between the 2 transceiver units, there WILL be a problem. Just like if you were to fire up a generator immediately beside a radio transmitter or receiver you would have an excellent chance of the E/M interference causing that signal impaired. Most optical transmission systems also use more than one transmitter, therefor you would also have to block more than one beam to actually cause a disruption of service. At least that is certainly the case with our product. Salut, Leigh McBain Director, Product Sales/Support fSONA Communications Corporation

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