MEFC
has most advanced draw towers for producing optical
fibers. Our Optical Fibers are drawn from best quality
performs. MEFC Optical fibers meet the latest international
standards ITU-T, EIA/TIA, IEC, BellCore. Fibers with
customized lengths and desired fiber characteristics
can be supplied to our customers.
» 50/125um Multi Mode
» 62.5/125um Multi Mode
» Dispersion Un-shifted Single
Mode
» Non Zero Dispersion Shifted
Single Mode
Optical
fibers are normally classified into two types, Single
Mode Optical Fibers and Multi Mode Optical fibers,
according to the number of modes the fiber carries.
Further, Single mode optical fibers are classified
into 3 categories by International Telecommunication
Union (ITU). These fibers are differentiated by the
Chromatic dispersion.
a.
G.652 - Dispersion Un-shifted Single Mode Fiber, also
called as Standard Single Mode Fiber.
b. G-653- Dispersion Shifted Single Mode Fiber.
c. G.655- Non-Zero Dispersion Shifted Single Mode
Fiber.
Since
the invention of Single Mode fibers in early 1970s,
Standard Single Mode Fibers were widely deployed in
Telecom networks with Single Channel transmission
at 1310nm. During 1990s Dispersion Shifted Single
Mode Fiber was introduced to utilize low attenuation
properties of fiber at 1550nm there by increasing
the transmission distance without repeaters. With
the availability of WDM technology, 1550nm transmission
at higher bit rates was effected due to nearly Zero
dispersion value at 1550nm. In order to achieve higher
bit rate transmission and WDM transmission, Non-Zero
Dispersion Shifted Single Mode Fiber was invented
and is being deployed by Telecom carriers.Multi Mode
Fibers are available in Graded index and Step index
type. Graded index type Multi Mode fibers are in use
due to reduced modal dispersion and higher bandwidth.
50/125 m and 62.5/125 m are widely deployed Multi
Mode fibers in Local Area Network (LAN). Recent developments
and ratification of Gigabit Ethernet Standards for
transmission at Gigabit speeds in LANs has brought
the need for new type of Laser Optimized 50/125 m
Multi Mode fiber with high bandwidth required by Gigabit
Ethernet standard.
While
choosing right type of Optical fiber for the networks,
in general, the following factors shall be considered:
>
Present capacity requirements
> Future demand and requirements
> Active and Passive component costs
Details
about optical fiber
|