HFBR-772BWZ Datasheet, PDF (9/25 Pages) AVAGO TECHNOLOGIES LIMITED – Pluggable Parallel Fiber Optic Modules, Transmitter and Receiver Low cost per Gb/s

Receiver 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
Input Optical Power Sensitivity
Input Optical Power Saturation
Operating Center Wavelength
Stressed Receiver Sensitivity
Symbol Min.
P_{IN MIN}
P_{IN MAX} –2
l_C
830
Typ.
–18.5
–1
–15.5
Max.
-16
860
-11.3
Unit
dBm avg.
dBm avg.
nm
dBm
Reference
1
2
3
Stressed Receiver Eye Opening
120
190
ps
4
Return Loss
12
19
dB
5
Signal Detect
Asserted
De-asserted
Hysteresis
P_A
-19
-17
dBm avg. 6
P_D
-31
-21
dBm avg.
P_A-P_D 0.5
2
dB
Notes:
1. Sensitivity is defined as the average input power with the worst case, minimum, Extinction Ratio necessary to produce a BER of 10^-12 at the
center of the Baud interval using a 2.5 GBd Pseudo Random Bit Sequence of length 2²³ – 1 (PRBS), or equivalent, test pattern. For this param-
eter, input power is equivalent to that provided by an ideal source, i.e., a source with RIN and switching attributes that do not degrade the
sensitivity measurement. All channels not under test are operating receiving data with an average input power up to 6 dB above PIN MIN.
2. Saturation is defined as the average input power that produces at the center of the output swing a receiver output eye width less than 120 ps
where BER < 10^-12 using a 2.5 GBd Pseudo Random Bit Sequence of length 2²³ –1 (PRBS), or equivalent, test pattern.
3. Stressed receiver sensitivity is defined as the average input power necessary to produce a BER < 10^-12 at the center of the Baud interval using
a 2.5 GBd Pseudo Random Bit Sequence of length 2²³ – 1 (PRBS), or equivalent, test pattern. For this parameter, input power is conditioned
with 2.5 dB Inter-Symbol Interference, ISI, (min), 33 ps Duty Cycle Dependent Deterministic Jitter, DCD DJ (min) and 6 dB ER (ER Penalty = 2.23
dB). All channels not under test are operating receiving data with an average input power up to 6 dB above PIN MIN.
4. Stressed receiver eye opening is defined as the receiver output eye width where BER < 10^-12 at the center of the output swing using a 2.5 GBd
Pseudo Random Bit Sequence of length 2²³ – 1 (PRBS), or equivalent, test pattern. For this parameter, input power is an average input optical
power of –10.7 dBm and conditioned with 2.5 dB ISI (min), 33 ps DCD DJ (min), 6 dB ER (ER Penalty = 2.23 dB). All channels not under test are
operating receiving data with an average input power up to 6 dB above PIN MIN.
5. Return loss is defined as the ratio, in dB, of the received optical power to the optical power reflected back down the fiber.
6. Signal Detect assertion requires all optical inputs to exhibit a minimum 6 dB Extinction Ratio at P_A = –17 dBm. All channels not under test are
operating with PRBS 23 serial encoded patterns, asynchronous with the channel under test, and an average input power up to 6 dB higher
than P_{IN MIN.}
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