Westermo Lynx 100 User 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)