Ethernet

Ethernet - Fast-Ethernet - Gigabit-Ethernet Copper/Fiber and Fiber/Fiber media converter Stand alone and Concentration center with In-Band management Optical Ethernet infrastructure Ethernet & SDH over CWDM

LAN Extension Media Conversion

ETHERNET OVER FIBER OPTIC & LAN EXTENSION From 10FL to 1000LX, over 2 fibers or WDM and CWDM
How to choose the right technology to fit your needsAccording to the distance, the number of available fiber and the type of fiber
These typical attenuations are corresponding to brand new fiber, but they can be different from the different manufacturers and they will increase with the age of the fiber. To this attenuation we need to Attenuation Attenuation Type of fiber Wavelength used typical deduct also the loss generate by 850nm 3,5 db 2,5 dbMultimode · the connectors (0,75db) 50/125nm 1300nm 1,5 db 0,8 db 850nm 3,5 db 3,0 db Multimode · the splices (0,1db) when 2 62,5/125nm 1300nm 1,5 db 0,7 db fibers have been soldered
Monomode 9/125nm Monomode 9/125nm 1310 nm 1550 nm 0,4 db 0,3 db 0,35 db 0,22 db

FIBER OPTIC LAN

FEW THEORICAL INFORMATION : All CXR fiber optic Ethernet devices are compatible with all active equipments of the marketaccording to the standards IEEE802.3, 802.3u, 802.3z, 802.3ab.
The Ethernet over OPTICAL FIBER 10FL : this technology is less and less used for the transportation 10BaseT Ethernet, mainly use MM fiber at 850nm 100FX : 10BaseT and 100BaseT Ethernet are transported mainly by MM fiber at1310nm and SM at1310 or1550nm. 1000SX : Giga Ethernet and 10/100/1000BaseT are transported by MM fiber at 850nm upto 550m. 1000LX : Giga Ethernet and 10/100/1000BaseT are transported by SM fiber at 1310nm and 1550nm. 1000ZX : few manufacturers are using this name for Giga SM at1550nm
Usage 10Base-FL 100FX-MM850 100FX-MM 100FX-SM 100FX-SM 1000SX 1000LX-MM 1000LX-SM 1000ZX-SM Rate 10 100 100 100 100 1000 1000 1000 1000 Type of fiber Multimode 850nm Multimode 850nm Multimode 1310nm Monomode 1310nm Monomode1550nm Multimode 850nm (50/125 ou 62,5/125) Multimode 1310nm Monomode 1310nm Monomode 1550nm 5 km 5 km 80 km 10/30km 80km IEEE distance 2 km 220m 2 km 10 km 80 km 220/550m CXR distance 2km ND 2km 30/60km 100/150km 550m

TRANSMISSION and NOMBRE of FIBER: Generally bidirectional fiber optic transmissions are using a pair of fibers. Emission is done simultaneously in A->B and B->A with the samewavelength. The WDM is solution to transmit over a single fiber. Each side own an optical prism to mix out-going signal from TX and the in-going signal to RX. One side is transmitting at 1310nm and other side at 1550. Both transmissions are received without attenuation. Modem must choose as pair (exp:FOC-SM20W-13 & FOC-SM20W-15). CWDM is using 2 fibers TX/RX. An external prism multiplex over one fiberup to 4, 8 or 10 optical transmissions (TXʎ ) with different wavelength per 20nm ( or Lambda) At the other end another prism de-multiplex and extract all lambdas (RXʎ ) .

The OPTICAL MODE of TRANSMISSION and associated fiber: The Multimode fiber ( MM ) or 50/125μm or 62,5/125μm and the Single-mode fiber( SM ) or 9/125μm are characterized by the internal diameter of the fiber (50/62,5 or 9μm) andexternal 125μm but also by the attenuation of the optical signal per Km. OPTICAL BUDGET necessary to match the distance : To transmit an optical link over a distance “D”, the optical power (dB) of the both devices (Emitter—Receiver) must provide a minimum Optical Budget of: D=
Budget - x C - y E Fiber attenuation per Km
C = loss per connector E = loss per splice

WAVELENGTH AND ATTENUATIONIMPORTANT ELEMENTS TO CHOOSE A CONVERTER
When you like to choose a solution of conversion Ethernet copper to fiber or fiber to fiber you need to know the following elements:

Link Pass Through protection

• The Ethernet mode both side: copper/fiber and rate • The number and type of fiber available: • • • • •

When this protection is activated the disconnection of B UTP port is generating...