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Technology Stocks : Silkroad -- Ignore unavailable to you. Want to Upgrade?

To: Frank A. Coluccio who wrote (73)	11/16/1998 12:09:00 PM
From: ahhaha	Read Replies (1) \| Respond to of 626

The lack of support infrastructure is another reason why SR can't just dump their creation on the world though egress and ingress devices shouldn't be that hard to build. As for framing or framing in multifiber QoS, at least for the foreseeable future, that shouldn't be a problem in that the bandwidth potential is so great that different feeds with different frames can be multiplexed, "4 dimensionally stacked" (uh-oh, gobble-de-gook), on one base in one fiber. QoS gets relegated to superfluous. Anent to this is the following items from the SR website: The common view of laser light is that it has only one wavelength. As scientists look closer and closer at the spectral output of the laser, they can see additional wavelengths around the core. By refining the laser-beam output to one narrow linewidth with all the output energy contained in that wavelength, the light can travel up to 10 times further down the fiber and, to serve our purposes, can incorporate more information on the beam instead of within the limited capacity on the modulated laser cavity itself. Many of the private posts I received from apparently knowledgeable people implied this aspect of SR claims was understood and it was asserted that it is common knowledge, no big deal, and easily attainable. It seems that SR's technique of external modulation and femto second photodiode speeds enables a packing density around the "core" which way exceeds all existing practical limits. Practical is to be underlined here. A further comment from the website addresses this: The undesirable modulation on the common transmission laser has been removed with the SilkRoad innovation. All of the modulation occurs external to the laser, eliminating problems such as mode hopping and chirping, which decrease signal quality and transmitter/receiver distance. By externally modulating the laser, the bandwidth is increased from 1 gigahertz to 20 gigahertz, nearly 20 times the current capacity and without compromising the integrity of the data being transmitted. Using existing, off-the-shelf products, SilkRoad technology uses a single transmission laser on a single fiber to support any fiber architecture or extant optical transmission—all without complicated software or amplification. While the laser beam SilkRoad's technology uses is similar to that used in DWDM, our innovation does not require the tuned cavity on the laser (required to provide a specific wavelength). Instead, SilkRoad's system collects the channels (typically OC48 ) before they are introduced on the modulator. Customers can then input many OC3 through OC48 type signals using only one wavelength of light, either 1310 nm or 1550 nm or both. By stacking a set of data channels in a four-dimensional optical space, this technology is modulated onto the optical beam using an external optical modulator. SilkRoad's technology encapsulates this external optical modulator, external clock frequency generation/modulation and femtosecond photodiode. So it would seem that QoS is irrelevant if you are in position to multiplex OC-x where x is not fixed and it's on one fiber. Down conversion just doesn't seem to me that difficult to engineer. Maybe the above technique is simply reversed so that signals can be separated and converted to em and sent to the traditional backbone/router circuits once off loaded from the main optical carrier. The ethernet routers are K2 bound, if the SR technology will fly, so that their retirement will have to be evolutionary after SR or SR-like technologies penetrate the long haul.