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HFBR-779BHWZ Datasheet(PDF) 8 Page - AVAGO TECHNOLOGIES LIMITED

Part No. HFBR-779BHWZ
Description  Pluggable Parallel Fiber Optic Modules, Transmitter and Receiver
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Maker  AVAGO [AVAGO TECHNOLOGIES LIMITED]
Homepage  http://www.avagotech.com
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HFBR-779BHWZ Datasheet(HTML) 8 Page - AVAGO TECHNOLOGIES LIMITED

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Optical Characteristics
Transmitter Optical Characteristics
(TC = 0 °C to +80 °C, VCC = 3.3 V ± 5%, Typical TC = +40 °C, VCC = 3.3 V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Output Optical Power
62.5/125 µm Fiber, NA = 0.2
POUT
–8
–4
–2
dBm avg.
1
Output Optical Power – Off State
POUT DIS
–30
dBm avg.
Extinction Ratio Output Power -2 to -8 dBm
ER
6
7
dB
2
Center Wavelength
lC
830
850
860
nm
Spectral Width – rms
s
0.4
0.85
nm rms
Rise/Fall Time
tr/tf
50
100
ps
3
Inter-channel Skew
110
200
ps
4
Relative Intensity Noise
RIN
–124
dB/Hz
Jitter Contribution
Deterministic
Total
DJ
TJ
20
60
60
120
psp-p
psp-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 Amend-
ment 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 unfiltered 20-80% value measured with optical-electrical converter with 12 GHz bandwidth. To increase accuracy of measurement
owning to laser overshoot and ringing, a filtered rise/fall time measurement is adopted with a 2.5Gbps (1.875 GHz bandwidth) 4th Bessel
Thompson filter. A max spec of 100 ps for unfiltered waveform is equivalent to a max spec 215 ps 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 223 – 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.


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