HFBR-53A3VEMZ Datasheet, PDF (7/13 Pages) AVAGO TECHNOLOGIES LIMITED – RoHS Compliant 3.3 V 1 x 9 Fiber Optic Transceivers for Fibre Channel

HFBR-53A3VEMZ/VFMZ, 850 nm VCSEL
Transceiver Optical Characteristics (T_A = 0° C to +70° C, V_CC = 3.14 V to 3.47 V)
Parameter
Symbol
Min.
Typ.
Max.
Output Optical Power
P_OUT
-10
-4
50/125 µm, NA = 0.20 fiber
Output Optical Power
P_OUT
-10
-4
62.5/125 µm, NA = 0.275 fiber
Optical Extinction Ratio
9
Center Wavelength
Spectral Width – rms
l_C
830
850
860
σ
0.85
Optical Rise/Fall Time
t_r / t_f
0.45
RIN₁₂
-116
Deterministic Transmitter Jitter
188
Unit
dBm avg.
dBm avg.
dB
nm
nm rms
ns
dB/Hz
ps
Reference
1
2, 3, Figure 1
Receiver Optical Characteristics (T_A = 0° C to +70° C, V_CC = 3.14 V to 3.47 V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Reference
Input Optical Power
Operating Center Wavelength
Return Loss
P_IN
-16
λ_C
770
12
0
dBm avg.
4
860
nm
dB
5
Signal Detect – Asserted
P_A
-17
dBm avg.
Signal Detect – Deasserted
P_D
-30
dBm avg.
Signal Detect – Hysteresis
P_A – P_D
1.5
dB
Notes:
1. Optical Extinction Ratio is defined as the ratio of the average optical power of the transmitter in the high (“1”) state to the low (“0”) state.
This Optical Extinction Ratio is expressed in decibels (dB) by the relationship 10log(Phigh avg/Plow avg).
2. These are 20-80% values and include the effect of a fourth order filter.
3. Laser transmitter pulse response characteristics are specified by an eye diagram (Figure 1). The characteristics include rise time, fall time, pulse
overshoot, pulse undershoot, and ringing, all of which are controlled to prevent excessive degradation of the receiver sensitivity.
4. The receive sensitivity is measured using a worst case extinction ratio penalty while sampling at the center of the eye.
5. Return loss is defined as the minimum attenuation (dB) of received optical power for energy reflected back into the optical fiber.
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