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Cisco MDS 9148S Multilayer Switch Hardware Installation Guide
OL-20185-01
Chapter 1 Technical Specifications
Note When shorter distances of single-mode fiber are used, it might be necessary to insert an inline optical
attenuator in the link to avoid overloading the receiver.
Table 1-12 Optical Specifications for Cisco CWDM SFP Transceivers
Parameter
Symbo
l Min. Typical Max. Units Notes
Transmitter central
wavelength
λ
c
(x-4) (x+1) (x+7) nm Available
center
wavelengths:
1470, 1490,
1510, 1530,
1550, 1570,
1590, 1610 nm
Wavelength
temperature
dependence
0.08 0.1 nm/°
C
Side-mode
suppression ratio
SMSR 30 dB
Transmitter optical
output power
P
out
0.0 5.0 dBm Average power
coupled into
single-mode
fiber
Receiver optical
input power (BER
<10
-12
with PRBS
2
-7
–1)
P
in
-28.0 -7.0 dBm @ 2.12 Gbps,
140°F (60°C)
case temp.
Receiver optical
input wavelength
λ
in
1450 1620 Nm
Transmitter
extinction ratio
OMI 9 dB
Dispersion penalty
at 60 km
2dB
Dispersion penalty
at 100 km
2 db @ 1.25 Gbps
3 dB @ 2.12 Gbps
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