DATA SHEET
The information in this document is subject to change without notice.
1997
Document No. P13642EJ3V0DS00 (3rd edition)
Date Published November 1998 NS CP(K)
Printed in Japan
CW LIGHT SOURCE
InGaAsP STRAINED MQW-DFB LASER DIODE MODULE
FOR D-WDM APPLICATIONS
LASER DIODE
NX8563LB Series
The mark
shows major revised points.
DESCRIPTION
The NX8563LB Series is a 1 550 nm laser diode with Polarization Maintain Fiber (PMF).
This device is designed as CW light source and ideal for D-WDM transmission systems in which external
modulators are used.
FEATURES
Output power
P
f
= 10 mW MIN.
Wavelength availability
p
= 1 540 to 1 560 nm, ITU standard based
Internal thermo-electric cooler and isolator
Hermetically sealed 14-pin butterfly package
Polarization maintain fiber pigtail
Pin No.
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
29.970.25
8.20.2
5.6
5.15
Optical Fiber (PMF)
Length: 1 m MIN.
0.75
1.0
TOP VIEW
PD
L
+
R
LD
#8
#14
#7
#1
Cooler
Thermistor
Function
Function
Thermistor
Thermistor
Bias
PD Anode
PD Cathode
Cooler Anode
Cooler Cathode
GND
GND
GND
GND, LD Anode
Signal Input
GND
GND
PACKAGE DIMENSIONS
in millimeters
PIN CONNECTIONS
20.830.13
26.040.13
7
8
1
14
8.890.13
10 MIN.
15.24
22.3
12.70.15
6.0
0.9
1.25
2.54
0.5
4 2.67
4
NX8563LB Series
ABSOLUTE MAXIMUM RATINGS (T
C
= 25
C, unless otherwise specified)
Parameter
Symbol
Ratings
Unit
Forward Current of LD
I
F
300
mA
Reverse Voltage of LD
V
R
2.0
V
Forward Current of PD
I
F
10
mA
Reverse Voltage of PD
V
R
20
V
Operating Case Temperature
T
C
-
20 to +65
C
Storage Temperature
T
stg
-
40 to +85
C
Lead Soldering Temperature (10 s)
T
sld
260
C
ELECTRO-OPTICAL CHARACTERISTICS (T
LD
= 25
C, T
C
=
-
-
-
-
20 to +65
C)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Laser Set Temperature
T
set
20
35
C
Forward Voltage
V
F
P
f
= 10 mW
0.9
1.5
V
Threshold Current
I
th
20
40
mA
Optical Output Power from Fiber
P
f
I
F
= 167 mA, T
LD
= T
set
10
mW
Threshold Output Power from Fiber
P
th
I
F
= I
th
100
W
Quantum Efficiency
0.08
0.1
W/A
Peak Emission Wavelength
p
P
f
= 10 mW, CW, T
LD
= T
set
Specified to ITU-T
*1
nm
Spectral Line Width
P
f
= 10 mW, CW, 3 dB down
1
2
MHz
Side Mode Suppression Ratio
SMSR
P
f
= 10 mW, CW
30
35
dB
FM Response
FM
P
f
= 10 mW
50
70
MHz/mA
Relative Intensity Noise
RIN
P
f
= 10 mW, 20 MHz to 3 GHz
-
150
dB/Hz
Flat frequency response
f
m
P
f
= 10 mW, +/
-
3 dB
1.8
GHz
Polarization Extinction Ratio
*2
ext
P
f
= 10 mW, CW
15
20
dB
*1 Please refer to ORDERING INFORMATION
*2 Polarization state of LD is aligned parallel to the slow axis.
5
NX8563LB Series
P
f
(mW)
0
I
m
I
m
T
LD
= T
C
= 25 C
T
LD
= 25 C, T
C
= 20 to +65 C
(@ P
f
(25 C) = 10 mW)
10
P
f
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Monitor PD: T
LD
= 25
C, T
C
=
-
-
-
-
20 to +65
C)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Monitor Current
I
m
P
f
= 10 mW, V
R
= 5 V
100
A
Dark Current
I
D
V
R
= 5 V
2
10
nA
Tracking Error
*1
I
m
= const.
0.5
dB
*1
= 10 log
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Thermistor and TEC: T
LD
= 25
C, T
C
=
-
-
-
-
20 to +65
C)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Thermistor Resistance
R
T
LD
= 25
C
9.5
10.0
10.5
k
B Constant
B
3 300
3 400
3 500
K
Cooler Current
I
C
T = 65
-
T
set
, P
f
= 10 mW
1.0
A
Cooler Voltage
V
C
T = 65
-
T
set
, P
f
= 10 mW
2.0
V
P
f
10 mW
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