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Technology Stocks : The *NEW* Frank Coluccio Technology Forum -- Ignore unavailable to you. Want to Upgrade?

To: axial who wrote (14748)	4/23/2006 4:15:06 PM
From: Frank A. Coluccio	Read Replies (1) \| Respond to of 46821

Understood, Jim. I appreciate the direction in which you are taking the discussion and where Peter's points hold true. Going back to your original hypothesis you did state: "1 - Any finite transmission medium can eventually become saturated with traffic." It's funny how each of our hammers seek different nails. When I read the above statement the first time I envisioned a wavelength and a medium of different sorts, i.e., an optical waveguide supporting a finite number of photons per unit of time, ultimately characterized by an arbitrary throughput rate as measured in bits per second. It could have easily been one of an endless number of metallic-based conductor paths, or flags, smoke signals, or corks making their way down a stream between villages, for that matter. It only happens by circumstance that most optical receivers are tuned for only a single frequency, or wavelength. Actually, even in photonics the wavelengths of propagated signals have the properties we usually assign to radio waves, but like I stated earlier, most systems _at _this _time are designed around a center frequency of a single wavelength, and that's it. Of course, many virtual waveguides designated as lambdas or wavelengths are defined by their own individual frequencies/wavelengths along the same fiber through wavelength division multiplexing, or WDM, just as their are many NTSC channels on a coaxial cable tv system through frequency division multiplexing, or FDM. You may recall a while back when some vendors made a pitch to introduce fiber-optic (opto-electronic) CDMA gear designed around the same principles as RF CDMA network elements. Only, such gear in the presence of a universe of SONET implementations didn't stand a chance to scale very well outside of the confines of limited metro settings and specialized communities of interest. I went on to think beyond the obvious points of your discussion, about how the transmission medium comprises only one set of considerations among many that determine how all but the simplest two-port network actually works in the real world. But it makes eminent sense to focus on the simple two-port network, first, prior to attempting to clear cut through the forest. I think I'll go back and re-read David Reed's short essay on the subject of interference. In the meantime, see if you can keep the flame lit. FAC