NEC's CW InGaAsP MQW DFB
LASER DIODE MODULE NX8562
FOR DWDM APPLICATIONS SERIES
(20 mW MIN)
FEATURES
•
AVAILABLE FOR DWDM WAVELENGTHS BASED ON
ITU-T RECOMMENDATIONS
(100 GHz grid) refer to the Ordering Information
•
OUTPUT POWER:
P
f
= 20 mW MIN
•
INTERNAL THERMOELECTRIC COOLER AND ISOLATOR
•
HERMETICALLY SEALED 14-PIN BUTTERFLY PACKAGE
• POLARIZATION MAINTAIN FIBER PIGTAIL
DESCRIPTION
NEC's NX8562 Series are a 1550 nm Multiple Quatum Well
(MQW) Distributed Feed-Back (DFB) laser diode with Polar-
ization Maintain Fiber (PMF). This device is designed as a
Continuous Wave (CW) light source and is ideal for optical
transmission systems in which external modulators are used.
The device is available for Dense Wavelength Division Multi-
plexing (DWDM) wavelengths based on ITU-T recommenda-
tions, enabling a wide range of applications.
ELECTRO-OPTICAL CHARACTERISTICS
(T
LD
= 25°C, T
C
= -20
PART NUMBER
SYMBOLS
T
SET
V
F
IF
I
TH
P
f
λ
p
∆v
SMSR
R
IN
ext
PARAMETERS AND CONDITIONS
Laser Set Temperature
Forward Voltage, P
f
= 20 mW
Forward Current, Pf = 20 mW
Threshold Current
Optical Output Power from Fiber,
I
F
= 167 mA, T
LD
= T
SET
Peak Emission Wavelength
1
, P
f
= 20 mW, CW,
T
LD
= T
SET
Spectral Line Width, P
f
= 10 mW, CW, 3 dB down
Side Mode Suppression Ratio, P
f
= 20 mW, CW
Relative Intensity Noise, P
f
= 20 mW, 20 MHz to 3 GHz
Polarization Extinction Ratio
2
, P
f
= 20 mW, CW
UNITS
°C
V
mA
mA
mW
nm
MHz
dB
dB/Hz
dB
to +70°C)
NX8562 Series
MIN
20
1.2
120
20
20
1527.99
ITU-T
1
1
33
20
45
-150
1611.78
2
TYP
MAX
35
1.5
167
40
Notes:
1. Available for DWDM based on ITU-T recommendations. please refer to Ordering Information.
2. Polarization state of LD is aligned parallel to the slow axis.
California Eastern Laboratories
NX8562 SERIES
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Monitor PD: T
LD
= 25°C, T
C
= -20
PART NUMBER
SYMBOLS
I
m
I
D
γ
1
Note:
1.
γ
= 10 log
PARAMETERS AND CONDITIONS
Monitor Current, P
f
= 20 mW, V
R
= 5 V
Dark Current, V
R
= 5 V
Tracking Error, I
m
= const.
P
f
20 mW
UNITS
µA
nA
dB
MIN
100
to +70°C)
NX8562 Series
TYP
MAX
2000
10
0.5
P
f
(mW)
10
P
f
T
LD
= T
C
= 25°C
T
LD
= 25°C, T
C
= -20 to +70°C
0
I
m
(at P
f
(25°C) = 20 mW)
I
m
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Thermistor and TEC: T
LD
= 25°C, T
C
= -20
PART NUMBER
SYMBOLS
R
B
I
C
V
C
PARAMETERS AND CONDITIONS
Thermistor Resistance
B Constant
Cooler Current,
∆T
= 70 - T
set
, P
f
= 20 mW
Cooler Voltage,
∆T
= 70 - T
set
, P
f
= 20 mW
UNITS
kΩ
K
A
V
MIN
9.5
3350
NX8562 Series
TYP
10.0
3450
to +70°C)
MAX
10.5
3550
1
2
ABSOLUTE MAXIMUM RATINGS
1
(T
C
= 25°C, unless otherwise specified)
SYMBOLS
I
F
V
R
I
F
V
R
T
C
T
STG
T
SLD
PARAMETERS
Forward Current of LD
Reverse Voltage of LD
Forward Current of PD
Reverse Voltage of PD
Operating Case Temperature
Storage Temperature
Lead Soldering
Temperature (10 s)
UNITS
mA
V
mA
V
°C
°C
°C
RATINGS
300
2.0
10
20
-20 to +70
-40 to +85
260
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
NX8562 SERIES
TYPICAL PERFORMANCE CURVES
(T
C
= T
SET
, unless otherwise specified)
OPTICAL OUTPUT POWER FROM FIBER
vs. FORWARD CURRENT
LONGITUDINAL MODE
0
Optical Output Power from Fiber, P
f
(mW)
1550
1560
10
30.0
25.0
Relative Intensity (dB)
-10
-20
-30
-40
20.0
15.0
10.0
-50
-60
-70
1540
5.0
0
0
40
80
120
160
200
Wavelength
λ
(nm)
Forward Current, I
F
(mA)
FORWARD CURRENT vs.
FORWARD VOLTAGE
OPTICAL OUTPUT POWER FROM FIBER
vs. MONITOR CURRENT
Forward Current, I
F
(mA)
100
Optical Output Power from Fiber, P
f
(mW)
120
24.0
20.0
80
16.0
60
12.0
40
8.0
20
4.0
0
0
0.4
0.8
1.2
1.6
2.0
2.4
0
0
0.2
0.8
1.2
1.6
2.0
Forward Voltage, V
F
(V)
Monitor Current, I
M
(mA)
THERMISTOR RESISTANCE vs.
AMBIENT TEMPERATURE
50
Thermistor Resistance, R (kΩ)
30
20
10
5
3
2
1
0
25
50
75
Ambient Temperature, T
A
(°C)
NX8562 SERIES
ORDERING INFORMATION
PART NUMBER
NX8562-AZ*
PACKAGE
14-Pin Butttterfly
NX8562
BA
With FC-PC Connector
Wavelength Code: Refer to Tables A and B
LB: Anode Ground
LF: Anode Floating
*NOTE:
Please refer to the last page of this data sheet, “Compliance with EU Directives” for Pb-Free RoHS Compliance Infomation.
TABLE A: DWDM Wavelength based on ITU-T Recommendations (@T
LD
= Tset)
Wavelength code
279
287
295
303
311
318
326
334
342
350
358
366
373
381
389
397
405
413
421
429
437
445
453
461
469
477
ITU-T
1
Wavelength
(nm)
1527.99
1528.77
1529.55
1530.33
1531.11
1531.89
1532.68
1533.46
1534.25
1535.03
1535.82
1536.60
1537.39
1538.18
1538.97
1539.76
1540.55
1541.34
1542.14
1542.93
1543.73
1544.52
1545.32
1546.11
1546.91
1547.71
Frequency
(THz)
196.20
196.10
196.00
195.90
195.80
195.70
195.60
195.50
195.40
195.30
195.20
195.10
195.00
194.90
194.80
194.70
194.60
194.50
194.40
194.30
194.20
194.10
194.00
193.90
193.80
193.70
Wavelength code
485
493
501
509
517
525
533
541
549
557
565
573
581
589
597
606
614
622
630
638
646
654
663
671
679
687
ITU-T
1
Wavelength
(nm)
1548.51
1549.31
1550.11
1550.91
1551.72
1552.52
1553.32
1554.13
1554.94
1555.74
1556.55
1557.36
1558.17
1558.98
1559.79
1560.60
1561.41
1562.23
1563.04
1563.86
1564.67
1565.49
1566.31
1567.13
1567.95
1568.77
Frequency
(THz)
193.60
193.50
193.40
193.30
193.20
193.10
193.00
192.90
192.80
192.70
192.60
192.50
192.40
192.30
192.20
192.10
192.00
191.90
191.80
191.70
191.60
191.50
191.40
191.30
191.20
191.10
Note:
1. The Value which omitted and computed the 3rd place below the decimal point.
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