NEC's1550 nm InGaAsP MQW DFB
LASER DIODE IN CAN PACKAGE NX6504 Series
FOR FIBER OPTIC COMMUNICATIONS
FEATURES
•
OPTICAL OUTPUT POWER:
P
O
= 5.0 mW
• LOW THRESHOLD CURRENT:
I
TH
= 12 mA
• HIGH SPEED:
t
r,
t
f
= 0.5 ns MAX
•
SMSR:
45 dB
•
WIDE OPERATING TEMPERATURE RANGE:
T
C
= -10 to +85°C
•
InGaAs MONITOR PIN-PD
• CAN PACKAGE:
ø5.6 mm
•
BASED ON TELCORDIA RELIABILITY
DESCRIPTION
NEC's NX6504 Series is a 1550 nm Multiple Quantum Well
(MQW) structured Distributed Feed-Back (DFB) laser diode
with InGaAs monitor PIN-PD. This device is ideal for Synchro-
nous Digital Hierarchy (SDH) system, STM-1/OC-3, STM-4/
OC-12 and ITU-T recommendations.
ELECTRO-OPTICAL CHARACTERISTICS
(T
C
= 25°C, unless otherwise specified)
PART NUMBER
SYMBOLS
V
OP
I
TH
P
TH
PARAMETERS AND CONDITIONS
Operating Voltage, P
O
= 5.0 mW, T
C
= -10 to +85°C
Threshold Current
T
C
= 85°C
Threshold Output Power, T
C
= -10 to +85°C, I
F
= I
TH
Differential Efficiency
Temperature Dependence
∆
η
d
= 10 log
of Differential Efficiency
UNITS
V
mA
mA
µW
W/A
dB
MIN
–
–
–
–
0.15
-3.0
NX6504 Series
TYP
1.0
12
35
–
0.25
-1.5
MAX
1.5
25
50
200
–
–
η
d
∆η
d
λp
SMSR
θ
⊥
θ
||
t
r
t
f
I
m
I
D
C
t
γ
η
d
(@ 85°C)
η
d
(@ 25°C)
Peak Emission Wavelength,
P
O
= 5.0 mW, RMS (-20 dB), T
C
= -10 to +85°C
Side mode Suppression Ratio
P
O
= 5.0 mW, T
C
= -10 to +85°C
Vertical Beam Angle
1
,(Refer to
Definitions)
P
O
= 5.0 mW, FAHM
2
Lateral Beam Angle
1
, P
O
= 5.0 mW, FAHM
2
Rise Time, 10 to 90%
Fall Time, 10 to 90%
Monitor Current, P
O
= 5.0 mW, V
R
= 5 V
Monitor Dark Current,
V
R
= 5 V
V
R
= 5 V, T
C
= -10 to +85°C
nm
dB
deg
deg
ns
ns
µA
nA
nA
pF
dB
1530
30
–
–
–
–
200
–
–
–
-1.0
–
45
30
25
0.05
0.2
600
0.1
–
6
–
1570
40
35
0.5
0.5
1000
10
500
20
1.0
Monitor PD Terminal Capacitance, V
R
= 5 V, f = 1 MHz
Tracking Error
3
Im = const, (@ P
O
= 5.0 mW, T
C
= 25°C)
T
C
= -10 to +85°C
Notes:
1. Applicable only to NX6504S Series.
2. FAHM: Full Angle at Half Maximum.
P
O
3. Tracking Error:
γ
(mW)
T
C
= 25°C
5.0
T
C
= -10 to +85°C
P
O
γ
=
10 log
|
P
O
5.0
|
[dB]
0
I
m
I
m
(mA)
California Eastern Laboratories
CEL [ CALIFORNIA EASTERN LABS ]
