Optical Fibre

OPTICAL FIBRE

Optical fibre can be SINGLE MODE OPTICAL FIBRE and MULTI MODE OPTICAL FIBRE. In Aksh, Optical fibre (As per ITU - T standard) are manufactured through Silica Germanium doped GLASS PREFORM (Origin Shin- Etsu: Japan) which are VAD (Vapour Axial Deposition) processed and adhere to the most stringent quality norms. The perform is then placed in a device know as a Drawing Tower, where the perform tip is heated and the optic fibre is drawn out as a string.
AKSH has a large capacity for SINGLE MODE OPTICAL FIBRES & MULTIMODE OPTICAL FIBRES (OM1, OM2& OM3).

OPTICAL FIBRE SINGLE MODE

ITU -T G652B

They are the most common Single mode fibre in the world. It is tuned to minimize the dispersion aroung the wavelength or with dispersion compensating fibre.

ITU - T G652D (Low Water Peak Single Mode Fibre)

This single mode fibre has low water peak, charactrized by the attenuation at 1383 nm being less than the attenuation at 1310 nm.

ITU - T G655 (None Zero Dispersion Shifted Fibre)

This is wide band transport fibre which has positive or negative dispersion intensity. The reason for that is to reduce the none - liner phenomenon which interferes with the adjacement wavelength in DWDM system.

ITU - T G657 (Low Bend Fibre)

It is a single mode fibre which low bend senstivity across overall bandwidth (1260 - 1625). It is deal for use of access and fibre to the home (FTTH) applications, including full spectrum CWDM.

OPTICAL FIBRE MULTI MODE

26.5/125 (OM1) & 50/125 (OM2/OM3)

Transmission speed/distances limited are 100Mbit/s up tio 2km, 1 Gbit/s for distances up to 500-600 meters, and 10 Gbit/s for distances up to 300 meters.

These are widely deployed in premises application & easily support applications ranging form Ethernet (10 Mbit/s) to Gagabit Ethernet
(1 Gbit/s) and , because of their relatively large core size, are ideal for use with LED transmitters. They support more than propagation mode, hence it is limited by modal dispersion.