Optical characteristics – Delta Electronics SFP Transceiver LCP-2488B4HDRx User Manual
Page 3
DELTA ELECTRONICS, INC.
3 2008/3/14
Rev. 0B
www.deltaww.com
Optical Characteristics
Transmitter
(V
CC
=3.3V
± 5%, Data Rate=2488Mb/sec, PRBS=2
23
-1 NRZ)
Parameter Symbol
Min.
Typ.
Max.
Unit
Note
Output Optical Power (Avg.)
P
-10 -3 dBm
Optical Extinction Ratio
ER
8.2
dB
Center Wavelength
λ
C
1266
1310
1360
nm
Spectral Width
σ
4 nm
Optical Rise/ Fall Time
t
r
/t
f
150/200
psec 1
Relative Intensity Noise
RIN
-120
dB/Hz
Total Jitter (Peak to Peak)
TJ
PP
50
ps
Output Eye
Compliant with GR-253 and ITU recommendation G.957
Receiver
(V
CC
=3.3V
± 5%, Data Rate=2488Mb/sec, PRBS=2
23
-1 NRZ)
Parameter Symbol
Min.
Typ.
Max.
Unit
Note
Sensitivity (Avg.)
P
S
-18
dBm 2
Input Optical Wavelength
λ
1266 1310 1360 nm
LOS-Deasserted (Avg.)
P
A
-20
dBm
LOS-Asserted (Avg.)
P
D
-45 dBm
LOS-Hysteresis P
A
-P
D
0.5 dB
Overload P
0
-3 dBm
Reflectance r
-12
dB
Notes:
1. These are unfiltered 20%~80% values
2. The sensitivity is provided at a BER of 1×10
-12
or better with an input signal consisting of 2488Mb/s,
2
23
-1 PRBS and ER=9dB.
Mean level of logical “1”
Mean level of logical “0”
A
m
pli
tud
e
Time
Optical Pulse Mask with Bessel Filter Specified in ITU-T G.957
1.25
1.00
0.75
0.25
0.00
-0.25
Mean level of logical “1”
Mean level of logical “0”
A
m
pli
tud
e
Time
Optical Pulse Mask with Bessel Filter Specified in ITU-T G.957
1.25
1.00
0.75
0.25
0.00
-0.25
Mask of the eye diagram for the optical transmit signal