PRELIMINARY DATASHEET
NEC's 1310 nm InGaAsP MQW DFB
LASER DIODE IN CAN PACKAGE
FOR 155 Mb/s AND 622 Mb/s APPLICATIONS
NX6306
Series
DESCRIPTION
FEATURES
• OPTICAL OUTPUT POWER:
PO = 5.0 mW
• LOW THRESHOLD CURRENT:
ITH = 10 mA @ TC = 25°C
• HIGH SPEED:
tr = 0.5 ns MAX
tf = 0.5 ns MAX
NEC's NX6306 Series is a 1310 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) systems and ITU-T recommen-
dations.
• SMSR:
45 dB @ TYP
APPLICATIONS
• 156 Mb/s: OC-3 (SR, IR-1, LR-1)
• WIDE OPERATING TEMPERATURE RANGE:
TC = -40 to +85°C
• InGaAs MONITOR PIN-PD
• 622 Mb/s: OC-12 (SR, IR-1, LR-1)
• CAN PACKAGE:
ø5.6 mm
• BASED ON TELCORDIA RELIABILITY
ELECTRO-OPTICAL CHARACTERISTICS (TC = 25°C, unless otherwise specified)
PART NUMBER
NX6306 Series
SYMBOLS
PARAMETERS AND CONDITIONS
UNITS
MIN
TYP
MAX
VOP
ITH
Operating Voltage, PO = 5.0 mW, TC = -40 to +85°C
V
–
1.1
1.6
Threshold Current
mA
mA
–
–
10
30
20
40
TC = 85°C
PTH
Threshold Output Power, TC = -40 to +85°C, IF = ITH
µW
–
100
200
ηd
Differential Efficiency (Flat glass type: NX6306S Series)
(Aspherical lens type: NX6306G Series)
W/A
0.2
0.2
0.35
0.3
–
–
ηd (@ 85°C)
ηd (@ 25°C)
∆ηd
λp
Temperature Dependence
of Differential Efficiency
dB
-3.0
-2.5
–
∆ηd = 10 log
Peak Emission Wavelength,
PO = 5.0 mW, RMS (-20 dB), TC = -40 to +85°C
nm
1280
–
1335
SMSR
Side mode Suppression Ratio
PO = 5.0 mW, RMS (-20 dB), TC = -40 to +85°C
dB
deg
deg
ns
30
–
45
35
30
–
–
40
θ⊥
θ||
tr
Vertical Beam Angle1, PO = 5.0 mW, FAHM2
Lateral Beam Angle1, PO = 5.0 mW, FAHM2
Rise Time, 10 to 90%
–
35
–
0.5
0.5
1000
tf
Fall Time, 90 to 10%
ns
–
–
Im
ID
Monitor Current, PO = 5.0 mW, VR = 5 V
µA
200
600
Monitor Dark Current,
VR = 5 V
VR = 5 V, TC = -40 to +85°C
nA
nA
–
–
0.1
–
10
500
Ct
Monitor PD Terminal Capacitance, VR = 5 V, f = 1 MHz
pF
dB
–
6
–
20
γ
Tracking Error3 Im = const, (@ PO = 5.0 mW, TC = 25°C)
TC = -40 to +85°C
-1.0
1.0
Notes:
1. Applicable only to NX6306S Series.
2. FAHM: Full Angle at Half Maximum.
3. Tracking Error: γ
P
O
(mW)
P
5.0
O
γ =
|10 log
|
[dB]
T
C = 25°C
5.0
TC = -40 to +85°C
P
O
I
m
0
Im
(mA)
California Eastern Laboratories
