Difference between Optic Modem
and Media Converter
Fiber Optic Modem
Fiber Optic Modem,
also known single-port optic multiplexer, is a point-to-point type terminal
equipment which uses a pair of optic fibers to achieve the transmission of E1
or V.35 or 10base-T. Fiber modem has the function of modulation and
demodulation. Fiber modem is local network relay transmission equipment,
suitable for base station transmission fiber terminal equipment and leased-line
equipment.
Fiber modem is
similar to the baseband MODEM (digital modem). The only difference from
baseband MODEM is that it access fiber line, the optical signal. The
multi-ports optic transceiver generally called multiplexer. For multi-port
optical multiplexer is normally be directly called “multiplexer”, single-port
multiplexer is generally used on the client, similar to commonly used WAN line
(circuit) networking with the baseband MODEM, and also named for “fiber modem”,
“optical modem”.
Fiber Media
Converter
Fiber Media
Converter is a simple networking device making the connection between two
dissimilar media types become possible. Media converter types range from small
standalone devices and PC card converters to high port-density chassis systems
that offer many advanced features for network management.
Fiber media
converters can connect different local area network (LAN) media, modifying
duplex and speed settings. Switching media converters can connect legacy
10BASE-T network segments to more recent 100BASE-TX or 100BASE-FX Fast Ethernet
infrastructure. For example, existing half-duplex hubs can be connected to
100BASE-TX Fast Ethernet network segments over 100BASE-FX fiber.
When expanding the reach of the LAN to span multiple locations, media
converters are useful in connecting multiple LANs to form one large campus area
network that spans over a limited geographic area. As premises networks are
primarily copper-based, media converters can extend the reach of the LAN over
single-mode fiber up to 160 kilometers with 1550 nm optics.
Wavelength-division multiplexing (WDM) technology in the LAN is
especially beneficial in situations where fiber is in limited supply or
expensive to provision. As well as conventional dual strand fiber converters,
with separate receive and transmit ports, there are also single strand fiber
converters, which can extend full-duplex data transmission up to 120 kilometers
over one optical fiber.
Other benefits of media conversion include providing a gradual migration
path from copper to fiber. Fiber connections can reduce electromagnetic
interference. Also fiber media converters pose as a cheap solution for those
who want to buy switches for use with fiber but do not have the funds to afford
them, they can buy ordinary switches and use fiber media converters to use with
their fiber network.
Main Difference between
Media Converter And Optical Modem
The difference between the media converter and optical modem is that the
media converter is to convert the optical signal in the LAN, simply a signal
conversion, no interface protocol conversion. While, fiber modem for WAN is the
optical signal conversion and interface protocol conversion, protocol converter
has two types of E1 to V.35 and E1 to Ethernet.
In fact, as the developing of network technology, the concept of media
converter and fiber modem has become increasingly blurred, which are basically
can be unified for the same equipment. Media converter becomes the scientific
name of fiber modem.
This link will help you more http://arindamcctvaccesscontrol.blogspot.com/2017/05/media-converter-best-for-surveillance.html
Few things need to know, There
are two primary types of fiber optic cable, single mode fiber (SMF) and multimode fiber (MMF). The former has a very thin core about
5-10 microns in diameter, which is about 10 percent of the latter. Generally,
single-mode optical fibers used in telecommunications operate at 1310nm or
1550nm wavelength while multimode fiber at 850nm and 1300nm. However,
sometimes, the subdivision of the two types is different due to various fiber
optic cable manufacturers. single mode optical fiber cable is used for
longer distances such as 100km compared with multimode fiber under 2km due to
the smaller diameter of the fiber core. Therefore, single mode optical fibers
are typically used outside between buildings in cable TV, internet, and
telephone signals transmission while multimode fibers are used within buildings
in backbone applications such as computer network linking.
Normally, fiber optic
cable speed rates at 10 Gbps, 40 Gbps and even 100 Gbps.
Generally,
one fiber optic cable is made up of incredibly thin strands of glass or plastic
known as optical fibers (called “core”) surrounded by an insulated casing
(called “cladding). Each strand is a little thicker than a human hair and can
carry much data like 25,000 telephone calls. Therefore, an entire fiber optic
cable can easily carry as much data as you can imagine.
