Going End to End to Deliver High-Speed Data
Industrial Productivity/Manufacturing Technology
Originating Technology/ NASA Contribution
By the end of the 1990s, the optical fiber “backbone”
of the telecommunication and data-communication networks
had evolved from megabits-per-second transmission rates
to gigabits-per-second transmission rates. Despite
this boom in bandwidth, however, users at the end nodes
were still not being reached on a consistent basis.
(An end node is any device that does not behave like
a router or a managed hub or switch. Examples of end
node objects are computers, printers, serial interface
processor phones, and unmanaged hubs and switches.)
The primary reason that prevents bandwidth from reaching
the end nodes is the complex local network topology
that exists between the optical backbone and the end
nodes. This complex network topology consists of several
layers of routing and switch equipment which introduce
potential congestion points and network latency.
By breaking down the complex network topology, a true
optical connection can be achieved. Access
Optical Networks, Inc., is making this connection a reality
with guidance from NASA’s nondestructive evaluation
experts.
Partnership
Naperville, Illinois-based Access Optical is a fabless
semiconductor and optical component subsystem manufacturer.
(Fabless refers to a company that does not manufacture
its own silicon wafers and concentrates on the design
and development of semiconductor chips.) It develops
and delivers value-added, high-speed, optical-to-digital
transducers that directly connect digital computers
to local area networks (LAN) and wide area networks
(WAN), as well as metro and long haul networks. These
products provide true end-to-end optical connections
between server, database host, and LAN domains as high-speed
peripheral devices.
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Access Optical
Networks, Inc.’s end-to-end optical technology
not only allows a server to tie directly to
an optical area network, but also offloads
Internet protocol stack operations. This provides
a significant improvement in server performance
by freeing up central processing unit (CPU)
cycles, reducing system interruptions, and
eliminating memory overhead and processor latency. |
While searching for opportunities to run proof-of-concept
tests on a new router/switch optical memory storage
system, Access Optical encountered a team of nondestructive
evaluation researchers at NASA’s Glenn Research Center.
These researchers saw that the high-speed, multi-gigabit
and multi-terabit data-transfer capabilities of Access
Optical’s storage system had potential to enhance a
laser-holographic technique they use; this technique
involves neural networks to analyze patterns in holographic
images. Such data-intensive computation can be a slow
process, but the company’s technology showed promise
in speeding up the analysis and improving output.
An award from the NASA Illinois Commercialization Center—Glenn’s
link to Illinois businesses—helped initiate the partnership
between Access Optical and Glenn, so that the new technology
could be proof-tested with help from the nondestructive
evaluation team. For Access Optical, this “technology
fusion experiment” with NASA provided a specific application
on which to focus its efforts, valuable insight into
product modifications and product integration, and
the financial means to expand as a successful company.
NASA is now looking at Access Optical’s high-speed
data-processing capability for application in
other areas, especially those supporting the Vision
for Space Exploration.
Product Outcome
Now a concept turned reality, Access Optical’s Alpha-Omega
(AΩ) family of optical peripheral equipment resolves
data rate mismatches between high-speed optical carrier-grade
networks and the digital computer bus interfaces with
high-speed, high-density shared memory, and simple
bus protocols. According to the company, these resolutions
can be achieved at a cost that is 60-percent lower
than competitor solutions.
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Access Optical
Networks, Inc.’s next-generation access point
solution. |
The AΩ optical peripheral units are platform computer
interface products with interchangeable network interface
cards for optical SONET (Synchronous Optical Network
Technologies) or optical Ethernet protocol network
connections. Currently, corporate servers and computer
interfaces rely on disbursement networks, which consist
of several layers of routing and switching equipment,
to gain access to Ethernet and SONET long haul networks.
These disbursement networks add several “hop” junctures
and introduce congestion points, thus, diminishing
bandwidth. With the AΩ units, bandwidth is increased,
disbursement networks are flattened, and congestion
points are eliminated.
Access Optical’s AΩ products also perform routing functions
that allow customers to configure point-to-point and
point-to-multipoint transmissions using ring and mesh
network topologies. Such configurations translate into
peer-to-peer server, workstation, and client/server
sub-networks directly connected or seamlessly interconnected
via LAN/WAN, metro, and/or long haul networks. Consequently,
the devices provide maximum utilization of bandwidth
between computers connected via communication networks
while eliminating the need for intermediate network
equipment (e.g., routers, asynchronous transfer modes,
and cross-point switches) to aggregate data traffic
and manage intermediate communication protocols. They
use a single protocol over a broad range of megabits
and terabits that scales to meet the customer’s need
to change or grow the capacity of their network.
The AΩ technology provides maximum benefits to customers
who have high-capacity streaming data applications,
such as Wavelength Services, Storage Area Network (SAN)/Network
Attached Storage (NAS), and Internet Service Provider
(ISP) in the private sector. Other customers can use
the products to build high-reliability ring and meshed
networks that Access Optical asserts are “ultra secure.”
The company also notes that its AΩ solutions can result
in a 30- to 50-percent reduction in the customer network
architecture hierarchy, eliminating multiple vendors,
equipment, protocol integration, and reducing operations,
administration, maintenance, and provisioning (OAM&P).
Access Optical maintains that the AΩ products
will provide protocol scalability that will integrate
easily within existing communication networks, while
off-loading the computing resources vital to applications
and mission-critical functions. This is especially
important, as all communications—Earth or space—need
to have common high-speed systems that are extremely
secure and scalable.
The test bed research performed with NASA has additionally
led Access Optical to develop a second product line
called the Sigma-Epsilon (ΣΕ) Bridge. The soon-to-be-available
technology could extend a LAN’s topology to multiple
geographic sites through a direct connection to WAN
or metropolitan area network (MAN) optical transport
networks. By providing a LAN this direct optical connection,
bandwidth could be increased and transport network
costs could be reduced.
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