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Technology Stocks : MRV Communications (MRVC) opinions?
MRVC 9.975-0.1%Aug 15 5:00 PM EST
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To: Frank A. Coluccio who wrote (11205)11/9/1998 10:04:00 AM
From: Terence Kennedy  Read Replies (1) of 42804
 
> I wouldn't be too taken about the single fiber strand aspect, however, because most
> responsible telecomm managers always want a back door to protect against route
> and element failures (ol' man back-hoe). Most architectures that permit restorative
> capabilities through seamless self-healing techniques usually are based on at least
> two diverse and redundant physical layer paths.

While that is true, those paths are currently a transmit+receive pair in one
direction ("east") and a second transmit+receive pair in the opposite direction
("west"). The bidirectional single-fiber hardware allows these transmit-
receive pairs to be placed on a single fiber.

In some topology implementations the far ends of an east or west pair are
connected to different equipment, and for those topologies some additional
equipment would be needed to split the transmit and receive and recombine
them with different signals. There are some advantages to doing this in the
optical domain.

However, as I said before, the initial benefits of this type of system will
be on the long-haul runs where pulling additional fiber is less cost-effective
than adding this hardware. In the metro area, additional fiber will likely be
more cost-effective than this equipment, at least in the near term.

Unfortunately, that means that initial deployments will encounter additional
issues not seen in metro environments - interactions with long fiber
runs and so forth. Also, since these will likely be with larger carriers,
there's the concern about migrating major fiber runs to this brand-new technology.
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