Optical Characteristics
Transmitter Optical Characteristics
(T
C
= 0 °C to +80 °C, V
CC
= 3.3 V ± 5%, Typical T
C
= +40 °C, V
CC
= 3.3 V)
Parameter
Output Optical Power
Output Optical Power – Off State
Extinction Ratio
Output Power -2 to -8 dBm
Center Wavelength
Spectral Width – rms
Rise/Fall Time
Inter-channel Skew
Relative Intensity Noise
Jitter Contribution
Deterministic
Total
RIN
Symbol
P
OUT
P
OUT DIS
ER
l
C
s
t
r
/t
f
Min.
–8
Typ.
–4
Max.
–2
–30
Unit
dBm avg.
dBm avg.
dB
Reference
1
6
7
2
830
850
0.4
50
110
860
0.85
100
200
–124
nm
nm rms
ps
ps
dB/Hz
3
4
DJ
TJ
20
60
60
120
ps
p-p
ps
p-p
5
6
Notes:
1. The specified optical output power, measured at the output of a short test cable, will be compliant with IEC 60825-1 Amendment 2, Class 1
Accessible Emission Limits, AEL, and the output power of the module without an attached cable will be compliant with the IEC 60825-1 Amendment
2, Class 1M AEL. See discussion in the Regulatory Compliance section.
2. Extinction Ratio is defined as the ratio of the average output optical power of the transmitter in the high (“1”) state to the low (“0”) state and is
expressed in decibels (dB) by the relationship 10log(Phigh avg/Plow avg). The transmitter is driven with a 550 MBaud, 27-1 PRBS serial encoded
pattern.
3. These are filtered rise/fall time measurements as defined in IEEE Gb Ethernet specification using a 2.488GBd (1.875 GHz bandwidth) 4th Bessel
Thompson filter. A max spec of 100ps for unfiltered waveform is equivalent to a max spec 215ps for filtered waveform.
4. Inter-channel Skew is defined for the condition of equal amplitude, zero ps skew input signals.
5. Deterministic Jitter (DJ) is defined as the combination of Duty Cycle Distortion (Pulse-Width Distortion) and Data Dependent Jitter. Deterministic
Jitter is measured at the 50% signal threshold level using a 2.5 GBd Pseudo Random Bit Sequence of length 2
23
– 1 (PRBS), or equivalent, test
pattern with zero skew between the differential data input signals.
6. Total Jitter (TJ) includes Deterministic Jitter and Random Jitter (RJ). Total Jitter is specified at a BER of 10
-12
for the same 2.5 GBd test pattern as
for DJ.
8
AVAGO [ AVAGO TECHNOLOGIES LIMITED ]
