NEC's 1550 nm InGaAsP
MQW-DFB TOSA FOR LONG HAUL
2.5 Gb/s APPLICATIONS
NX8511UD
FEATURES
PEAK EMISSION WAVELENGTH:
p
= 1 550 nm
OPTICAL OUTPUT POWER:
P
f
= 2.0 mW
WIDE OPERATING TEMPERATURE RANGE:
T
C
= -20 to +85C
SIDE MODE SUPPRESSION RATIO:
SMSR = 40 dB
INGAAS MONITOR PIN-PD
INTERNAL OPTICAL ISOLATOR
BASED ON TELCORDIA RELIABILITY
NEC's NX8511UD is a 1 550 nm Multiple Quantum Well
(MQW) structured Distributed Feed-Back (DFB) laser diode
TOSA (transmitter optical sub-assembly) with InGaAs monitor
PIN-PD in a receptacle type package designed for SFF/SFP
transceiver with LC duplex receptacle.
This device is ideal for Synchronous Digital Hierarchy (SDH)
system, long haul STM-16 (L-16.2), ITU-T recommendations,
and SONET OC-48 (LR-2).
DESCRIPTION
California Eastern Laboratories
PRELIMINARY DATA SHEET
5.0 mm
NX8511UD
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Optical Output Power from Fiber
P
f
5.0
mW
Forward Current of LD
I
F
150
mA
Reverse Voltage of LD
V
R
2.0
V
Forward Current of PD
I
F
2.0
mA
Reverse Voltage of PD
V
R
15
V
Operating Case Temperature
T
C
-20 to +85
C
Storage Temperature
T
stg
-40 to +85
C
Lead Soldering Temperature
T
sld
350 (3 sec.)
C
Relative Humidity (noncondensing)
RH
85
%
ELECTRO-OPTICAL CHARACTERISTICS
(T
C
= -20 to +85C, unless otherwise speci ed)
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Optical Output Power from Fiber
P
f
CW
2.0
mW
Operating Voltage
V
op
P
f
= 2.0 mW
1.1
1.6
V
Threshold Current
I
th
T
C
= 25C
10
20
mA
50
Threshold Output Power
P
th
I
F
= I
th
100
W
Differential Ef ciency
d
P
f
= 2.0 mW, T
C
= 25C
0.07
0.1
W/A
P
f
= 2.0 mW
0.04
Peak Emission Wavelength
p
CW, P
f
= 2.0 mW
1 530
1 550
1 570
nm
Side Mode Suppression Ratio
SMSR
P
f
= 2.0 mW
30
40
dB
Rise Time
t
r
20-80%, P
pk
= 2.0 mW, I
F
= I
th
100
ps
Fall Time
t
f
80-20%, P
pk
= 2.0 mW, I
F
= I
th
150
ps
Monitor Current
I
m
V
R
= 1.5 V, P
f
= 1.0 mW
100
500
1 000
A
Monitor Dark Current
I
D
V
R
= 1.5 V, T
C
= 25C
0.1
50
nA
V
R
= 1.5 V
10
500
Tracking Error
I
m
= const.
-1.0
1.0
dB
Connector Repeatability
-
With master pigtail
-1.0
1.0
dB
Life Support Applications
These NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably be expected
to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and agree to fully indemnify
CEL for all damages resulting from such improper use or sale.
A Business Partner of NEC Compound Semiconductor Devices, Ltd.
05/03/2004
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