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The VH4000 Virtual Hub (or ''VHub'') leverages several new technologies
from Aurora to dramatically change the way MSOs deploy hub facilities in their
networks by eliminating most capital expenditures normally associated with advanced
services rollouts. Comprised of field hardened dense wave division multiplexing
(DWDM) optical passives, node-installed EDFAs, optical switches, and other
special-purpose modules, the VHub allows MSOs to configure hub sites within a
compact strand- or pedestal-mounted housing.
A single VHub can feed 16 to 24 unique optical signals to areas of
10,000 to 20,000 households, and requires no external cooling or ventilation. With
this platform, MSOs can quickly and easily deliver services such as VoD, VoIP, high
speed data and network DVR, without the need to acquire property, construct
controlled facilities or deploy distributed servers and switching devices. A single
master facility can feed a large number of VHubs in surrounding communities, providing
significant cost savings.
The Aurora NC4000 series Optical Node Chassis provides a rugged and
environmentally stable enclosure for the optical components of the VHub. The NC4000
is available with a PC4001 expansion chassis module that allows installation of up
to 12 different optical networking modules, and single or dual redundant power supplies
are available for the chassis.
Some of the modules that can be used to configure the Virtual Hub
Platform include the following:
The OS42S1S Optical Switch allows signals to be fed over diverse routes,
providing a highly reliable network infrastructure. The switch features a switching
time of less than 10 milliseconds. (Learn more.)
FA4500 series EDFAs (with nominal output power levels of 12, 14, or 17 dBm)
allow amplification of optical broadcast and narrowcast signals, as needed, for extending
reach or overcoming passive optical splitting and combining losses to create
broadcast/narrowcast feeds for 16 to 24 downstream nodes.
(Learn more.) Models with dual high-level outputs
(nominally 19 or 21 dBm per output, depending on the model) are also available.
The OP4138 Optical 1550nm Broadcast Splitter with 1310/1550 Diplex Filters
is ideally suited for FTTH applications, providing a combined optical splitter for 1550nm
broadcast signals together with 1310/1550 diplex filters. This compact design, with MPO
connectors, eliminates most fiber jumpers and associated losses which are normally created
by broadcast splitting and/or 1310/1550 mux/demux functions.
(Learn more.)
The OP4538 Narrowcast Demultiplexer with Broadcast/Narrowcast Combiner
is the heart of the Virtual Hub platform. This device creates eight unique optical
service carriers from a single broadcast and a single DWDM narrowcast input, carrying
up to 40 DWDM ITU-grid optical channels and passing the remaining DWDM channels to an
optical output port for cascading of multiple OP4538 modules. Occupying just two slots
in the 12-slot NC4000 series chassis, as many as three modules can be installed in a
single node housing, providing up to 24 unique broadcast/narrowcast signals to downstream
nodes. Like all of Aurora’s field-deployable products, the OP4538 is rugged, reliable and
designed to operate over the temperature range from -40° to +85°C. Although the
OP4538 is a passive device, it can be detected remotely via Aurora’s integrated management
platform. (Learn more.)
OP41SxS series Optical Splitters provide 8-, 16-, or 32-way balanced outputs.
These compact designs, with 8-port Elite MPO connectors for the split outputs, feature
very low insertion loss and high port-to-port uniformity in dual operating wavelength windows.
(Learn more.)
The OE4130S Monitoring and Control Module permits monitoring and management
of the VH4000 Virtual Hub from Aurora’s Opti-Trace EMS software.
(Learn more.)
Features
• Service 20,000 households from a single Virtual Hub housing, serving up to
24 nodes with only seven fibers (including both redundant routes for
broadcast/narrowcast and return fibers) when used in conjunction with
Aurora’s DWDM return path transponders
• Supports up to 12 modules, including any combination of the FA4517 EDFA,
the OP4538 Optical Narrowcast Demux with BC/NC Combiner, the
OS42S1S Optical Switch (providing redundancy and route diversity with
switching times less than 10 milliseconds) and the OE4130 monitoring
and control module, as well as traditional transceivers and digital
transponders
• Low power consumption
• Fully monitored and controllable via the Aurora Element Management
System (EMS)
• Fundamentally changes the economics associated with offering and
upgrading services to both metropolitan and small, isolated markets by
eliminating costly CAPEX items (real estate, facility construction, HVAC and
back-up generator) and reducing time to market
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