optic complies with IEEE 802.3-2000 Clause 38. The table below describes the various
operating ranges for the 1000BASE-LX pluggable optic over each optical fiber type.
Fiber Type
Modal Bandwidth @ 1300 nm
(min. overfilled launch)
(MHz × km)
Minimum range
(meters)
10 µm SSMF
N/A
2 to 5000
The following table lists the specific optical characteristics for a 1000BASE-LX
pluggable optic.
Application
1000BASE-LX
Bit rate
1.25Gb/s +/-100ppm
Operating wavelength range
1270 - 1355 nm
Transmitter Characteristics
Transmitter type
Longwave Laser
T
rise
/T
fall
(max, 20–80%)
0.26 ns
RMS spectral width (max)
4 nm
Average launch power (max)
-3 dBm
Average launch power (min)
-11 dBm
Average launch power of OFF transmitter (max)
-30 dBm
Extinction ratio (min)
9 dB
Mask of the eye diagram of the optical transmit signal
see IEEE802.3
RIN (max)
-117 dB/Hz
Receive Characteristics
Average receive power (max)
-3 dBm
Receive sensitivity (min) at BER = 1 × 10
-12
-19 dBm
Return loss (min)
12 dB
Stressed receive sensitivity
(measured with conformance test signal at TP3 for BER = 10–12
at the eye center)
-14.4 dBm
The following table lists the worst-case power budget and link penalties for a
1000BASE-LX pluggable optic. Link penalties are used for link budget calculations.
Description
Unit
10 µm SMF
Link power budget
dB
8
Operating distance
m
5000
Channel insertion loss (a wavelength of 1270 nm is used to
calculate the values)
dB
4.57
Link power penalties (a wavelength of 1270 nm is used to
calculate the values)
dB
3.27
Product description
System specifications
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365-312-847R4.0
Issue 4, November 2006
Lucent Technologies - Proprietary
See notice on first page
2-37
