is a Optical Network?
In this general optical network tutorial
you will find basic overview of the fiber
optic technology, communication glossary,
lan/wan cables, communication devices
and the fiber optic industry trends..
Optical network is a network of the fiber
optics cables in which data travels on
the thin fibers at the speed of the light.
Today, many ISPs, corporate offices, LANS
and even home networks are connected through
the fiber optics though it’s still
very costly but it provides a high bandwidth
and data transfer capacity. Fiber optic
cables act as a backbone when they connect
different ISPs with each other and in
case of any breakdown or any kind of problem
in the backbone results in a communication
failure at very large scale. There are
a large number of the fiber optic cables
are involved in making the whole internet.
Fiber Optic Technology
Fiber optic technology is most popular
in the telecommunication industries as
well as Local Area networks. Fiber optic
cable is a bundle of various cables which
are thin and provides a large bandwidth.
The cost of the fiber optic cables is
much higher and same is the installation
of the fiber optic cables. Today, a large
number of the communication networks depend
on the fiber optics. Fiber optics is less
susceptible to the outer interference
than the metal cables. CCTV network, long
distance switches, central offices, subscriber’s
loop careers and industrial networks use
fiber optics for communication purposes.
In the near future, fiber optical cables
will repalce the conventional coaxial
and ethernet cables for the LAN networking.
Enterprise Optical Network.
Fiber optics also provides solutions
for the enterprise networking like NAS
(network attached storage) and SAN (storage
area network). A NAS is a server that
is used to data sharing in a network.
NAS allows more hard disk storage space
to be added to a network. A NAS device
does not require to be attached to the
server directly and it can be placed anywhere
in the network. A NAS can be made up of
two or more NAS and being a part of a
network, the network user can access it
from anywhere in the LAN. NAS is an efficient
way of storage and file sharing. Fiber
optics provide more efficiency and reliability
in the NAS performance by providing more
bandwidth and data capacity. SAN is a
subnet of the shared storage devices in
a LAN or a WAN. Fiber optics provide more
high speed connectivity and speed among
the SAN in a LAN or WAN.
Optical Network Devices
Fiber optic devices are in use in a number
of ways like Networking, storage, industrial,
medical, defense, broadcasting, telecommunication
Optical testers are designed for a variety
of measurements and tests with a single
Attenuators are designed for single mode
applications, multimode applications and
for attenuation settings.
Fiber Optic connectors are used to connect
a fiber with another fiber or equipment.
There are different types of connectors
are being used today such as SMA, FC and
Optical Switch is a handheld device for
calibration sets and measurements automation.
Optical Routers connects twisted pair
LONWORK notes to the fiber optic backbones
or subnets. They also re-routes the data
automatically due to power failure of
Major Optical Network Terms
Adaptor: It is a device for connecting
two or connectors.
ADSL: Asymmetric Digital Subscriber lines
is a most common form of the DSL
Amplifier: It is a device that is used
to amplify the signals without destroying
the original wave shapes.
ATM: An abbreviation for the asynchronous
Attenuation: The reduction of the optical
power as it passes through the fiber optic.
Attenuation: A device that is used to
reduce the signal power in a fiber optic.
Backbone: Backbone is a high speed telecommunication
Bandwidth: The capacity of the medium.
Base band: A simplest method of the transmission
in the LANS.
Biconic Connector: A type of the fiber
Bit: An electrical pulse that carry signals.
Bandwidth: Capability of dealing with
high speed, high capacity data transmission.
Cable: One or more fibers enclosed in
the protecting covering.
CATV: An abbreviation of the community
Antenna television of cable TV.
Coax: An abbreviation of the coaxial cable.
COMSAT: Communication satellite.
Coupler: A device that is used to distribute
the power between two or more ports.
CWDM: Course wavelength division multiplexing.
Detector: Converts fiber signals into
the electrical signals.
Duplex: The simultaneous operations of
a circuit in both directions in a communication
FDDN: Fiber data distribution network.
Fiber optic modems: Used for sending and
Fiber Storage: High speed network technology
used for storage.
MT Connector: Multi fiber connector used
to hold 24 fibers.
ODS: Optical data storage.
PHY: Known as physical layer device.
POF: Plastic optical fiber.
Port: Connection point.
PTO: Public telecommunication operators.
RFI: Radio frequency interface.
SONET: Synchronous optical network.
TDM: Time division multiplexing.
Trunk: Circuit that connects two switching
X Band: Frequency ranges between 8.0 to