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Technology Stocks : The *NEW* Frank Coluccio Technology Forum
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To: ftth who started this subject9/14/2000 11:23:30 PM
From: Frank A. Coluccio  Read Replies (1) of 46821
 
There is an interesting White Paper on the Optical Solutions Inc web page that compares Passive Optical Networks with Point-to-Point Optical Access Architectures.

opticalsolutions.com

It requires that you register for it, but the turnaround time is immediate.

Here's an excerpt:

Which Solution is Superior?

It is clear from the above examples that the PON example is superior in several
respects. The physical equipment volume and cost is lower by an order of magnitude.

A complete solution exists relieving the service provider of the hidden costs and risks
of assuming system integration responsibility. ALL services, not just data, are provided in
a manner consistent with the vast majority of homes. The notion of a network
demarcation point is maintained meeting technical, logistical and regulatory requirements.

In spite of these advantages, some service providers have argued that the point-to-point
system is superior because greater capacity to the end user is possible with the
dedicated fiber and individual subscribers can have their opto/electronics upgraded.

The greater capacity is illusionary. All network architectures incorporate points of
concentration. In the case of the PON, it happens on the optical access. After that point,
the system is designed so that there are no concentration points in the voice/data
electronics in the node. In the case of the point-to-point Ethernet, there is no
concentration in optical access. In the example, the Ethernet equipment will concentrate
48 100 Mbps interfaces onto a single 1000 Mbps interface.

Overall, the system concentration is about the same as the PON. The PON is actually better positioned to provide superior capacity downstream toward the subscriber, because the cost of higher-capacity optical transmitters is amortized across a number of users.

The ability to upgrade individual subscribers is built into the PON example by inclusion
of extra fibers. The number of extra fibers can be tailored by the service provider to
meet anticipated demand. These fibers can be used to provide a point-to-point service.
A better use is to implement a “fifth” PON in a PON cabinet that is used to deliver the
next generation of service to specific users served by a PON cabinet. The figure on the
following page illustrates this notion."
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