Westermo Lynx 100 - Manual (Page 11)

11 6640-2205
Optical Power Budget
The allowed link length is calculated from the optical power budget (OPB), the available optical
power for a fibre-optic link, and the attenuation of the fibre, comprising losses due to in-line
connectors, splices, optical switches and a margin for link ageing (typical 1.5 dB for 1300 nm).
The worst-case optical power budget (OPB) in dB for a fibre-optic link is determined by the differ-
ence between the transmitter’s output optical power (min) and the receiver input sensitivity (max).
For other transceivers, contact Westermo
* Output power is power coupled into a 62.5/125 µm multimode fibre
** Output power is power coupled into a 9/125 µm singlemode fibre
*** Other distances are also available, please contact Westermo
FX 1Gbit (Fibre) SM-LC80 SM-LC50 SM-LC10 MM-LC2 MM-LC550
Connector LC LC LC LC LC
Distance km *** 80 50 10 2 0.5
Fibre type µm Singlemode
9/125
Singlemode
9/125
Singlemode
9/125
Multimode
62.5/125 and
50/125
Multimode
62.5/125
And50/125
Wavelength nm 1550 1550 1310 1310 850
Transmitter
Output optical
power min/max
dBm
–2 ** –4 ** –9.5 ** –9 * -9.5
Receiver
Input sensitivity,
max dBm
–24 –24 –20 –19 -18
Optical power
budget dB
22 20 10.5 10 8.5
Zero cable length No No Yes Yes Yes
Transceiver type LC Small Form Factor Pluggable (SFP)
Laser class Class 1, IEC 825-1 Accessible Emission Limit (AEL)
FX100 Mbit
(Fibre)
Bi-di
LC2
Bi-di
LC20
SM-
LC120
SM-
LC80
SM-
LC40
SM-
LC20
MM-
LC2
Connector LC LC LC LC LC LC LC
Distance km *** 2 20 120 80 40 20 2
Fibre type µm Multimode
62.5/125
and
50/125
Single-
mode
9/125
Singel-
mode
9/125
Single-
mode
9/125
Single-
mode
9/125
Single-
mode
9/125
Multi-
mode
62.5/125
and
50/125
Wavelength nm Connector 1 1550 1550 1310 1310 1310
Tx 1310
Rx 1550
Connector 2
Tx 1550
Rx 1310
Transmitter
Output optical power
min/max dBm
–10 * –14 ** 0 –5 ** –5 ** –15 ** –19 *
Receiver
Input sensitivity,
max dBm
–28 –32 -35 –34 –34 –34 –31
Optical power budget
dB
18 18 35 29 29 19 12
Zero cable length Yes Yes No Yes Yes Yes Yes
Transceiver type LC Small Form Factor Pluggable (SFP)
Laser class Class 1, IEC 825-1 Accessible Emission Limit (AEL)