The following table lists the specific optical characteristics for a 1000BASE-SX
pluggable optic.
Application 1000BASE-SX
Bit rate 1.25Gb/s +/-100ppm
Operating wavelength range
[Non Peltier cooled]
770 - 860 nm
Transmitter characteristics
Transmitter type Shortwave Laser
T
rise
/T
fall
(max, 20–80%, λ > 830 nm) 0.26 ns
T
rise
/T
fall
(max, 20–80%, λ≤830 nm) 0.21 ns
RMS spectral width (max) 0.85 nm
Average launch power (max) -1.1 dBm (Class 1M safety limit as defined
by IEEE 802.3–2000 Clause 38.7.2)
Average launch power (min) –9.5 dBm
Average launch power of OFF transmitter (max) –30 dBm
Extinction ratio (min) 9 dB
RIN (max) –117 dB/Hz
Mask of the eye diagram of the optical transmit signal see IEEE802.3
Receive Characteristics
Average receive power (max) 0 dBm
Receive sensitivity (min) at BER=1x10
-12
–17 dBm
Return loss (min) 12 dB
Stressed receive sensitivity
(measured with conformance test signal at TP3 for BER =
10–12 at the eye center)
–12.5 dBm (62.5 µm MMF)
–13.5 dBm (50 µm MMF)
The following table lists the worst-case power budget and link penalties for a
1000BASE-SX pluggable optic. Link penalties are used for link budget calculations.
Description Unit 62.5 µm
MMF
50 µm MMF
Modal bandwidth as measured at
850 nm (minimum, overfilled
launch)
MHz ×
km
160 200 400 500
Link power budget dB 7.5 7.5 7.5 7.5
Operating distance m 220 275 500 550
Channel insertion loss (a
wavelength of 830 nm is used to
calculate the values)
dB 2.38 2.60 3.37 3.56
Link power penalties (a
wavelength of 830 nm is used to
calculate the values)
dB 4.27 4.29 4.07 3.57
Technical Specifications
System specifications
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365-312-801R7.2
Issue 3, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
10-5
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