DATA SHEET
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1999
Document No. P14127EJ2V0DS00 (2nd edition)
Date Published September 1999 NS CP(K)
Printed in Japan
LASER DIODE
NX7460LE
1 480 nm EDFA APPLICATION
InGaAsP STRAINED MQW DC-PBH LASER DIODE MODULE
The mark
shows major revised points.
DESCRIPTION
The NX7460LE is a 1 480 nm pumping laser diode module with optical isolator for an EDFA (Er Doped optical
Fiber Amplifier) that can expand the transmission span and compensate optical losses. It has a strained Multiple
Quantum Well (st-MQW) DC-PBH laser diode that features high output power, high efficiency, and stable
fundamental mode.
FEATURES
InGaAsP strained MQW DC-PBH laser diode
High output power
P
f
= 120 mW MIN. @ I
F
= 550 mA CW
Internal optical isolator, thermoelectric cooler and InGaAs monitor photo diode
Hermetically sealed 14-pin butterfly package
Single mode fiber pigtail
Wide operating temperature range
T
C
= 0 to +65 C
29.970.25
8.20.2
5.6
5.15
Optical Fiber (SMF)
Length: 1 m MIN.
0.30
1.0
TOP VIEW
26.040.13
15.24
12.70.15
Case
PD
LD
#7
#8
#1
#14
Thermistor
Cooler
+
PIN CONNECTIONS
Function
Cooler Anode
Thermistor
PD Anode
PD Cathode
Case Ground
NC
NC
Pin No.
1
2
3
4
5
6
7
Function
NC
NC
LD Anode,
Case Ground
LD Cathode
NC
Case Ground
Cooler Cathod
Pin No.
8
9
10
11
12
13
14
PACKAGE DIMENSIONS
in millimeters
20.830.13
7
8
1
14
8.890.13
13.3
22.3
6.0
0.9
1.25
2.54
0.5
4 2.67
4.00.15
+1.0 0.0
Data Sheet P14127EJ2V0DS00
2
NX7460LE
ORDERING INFORMATION
Part Number
Available Connector
NX7460LE
Without Connector
NX7460LE-BA
With FC-PC Connector
NX7460LE-CA
With SC-PC Connector
ABSOLUTE MAXIMUM RATINGS (T
C
= 25 C, unless otherwise specified)
Parameter
Symbol
Ratings
Unit
Forward Current of LD
I
F
700
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
= 0 to +65 C)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Threshold Current
I
th
CW
25
35
mA
Forward Voltage
V
F
I
F
= 550 mA
2.2
2.7
V
Optical Output Power from Fiber
P
f
I
F
= 550 mA
120
140
mW
Center Wavelength
C
I
F
= 550 mA, RMS (20 dB)
1 470
1 480
1 490
nm
Spectrum Width
I
F
= 550 mA, RMS (20 dB)
4.0
8.0
nm
Isolation
I
S
1 470 nm to 1 490 nm
20
dB
Data Sheet P14127EJ2V0DS00
3
NX7460LE
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Monitor PD: T
LD
= 25 C, T
C
= 0 to +65 C)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Monitor Current
I
m
V
R
= 5 V, I
F
= 550 mA
500
1 000
1 500
A
Monitor Dark Current
I
D
V
R
= 5 V
2.0
10
nA
Tracking Error
*1
I
m
= const.
0.5
dB
*1
= 10 log
0
I
m
I
m
T
LD
= T
C
= 25 C
(@P
f
(25 C) = 120 mW)
T
LD
= 25 C
T
C
= 0 to +65 C
P
f
(mW)
X
P
f
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Thermistor and TEC: T
LD
= 25 C, T
C
= 0 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 = 40 K
1.0
1.25
A
Cooler Voltage
V
C
T = 40 K
3.5
4.3
V
Cooling Capacity
T
*1
I
C
= 1.25 A, I
F
= 660 mA
40
K
*1
T = T
C
T
LD
P
f
120 mW
Data Sheet P14127EJ2V0DS00
4
NX7460LE
TYPICAL CHARACTERISTICS (T
C
= 25 C)
1 480
1 530
1 430
Relative Intensity (10 dB/div.)
LONGITUDINAL MODE
Wavelength
(nm)
150
100
50
0
300
600
Forward Current I
F
(mA)
Optical Output Powr from Fiber P
f
(mW)
OPTICAL OUTPUT POWER FROM FIBER vs.
FORWARD CURRENT
Remark The graphs indicate nominal characteristics.
Data Sheet P14127EJ2V0DS00
5
NX7460LE
LD FAMILY FOR DENSE WDM APPLICATION
Absolute Maximum Ratings
Typical Characteristics
Part Number
T
C
(
C)
T
stg
(
C)
I
th
(mA)
P
f
(mW)
C
(nm)
Description
Package
TYP.
MIN.
TYP.
NDL7540PA
-
20 to +65
-
40 to +85
40
90
1 480
1 480 nm pump LD
module
BFY
NX7460LE
0 to +65
-
40 to +85
25
120
1 480
1 480 nm pump LD
module
BFY
NX8501 Series
0 to +65
-
40 to +85
20
2
1 510
Telemetry
Coaxial
NX8561JD
*1
0 to +65
-
40 to +85
20
3
1 510
Telemetry
DIP
NX7660JC
*1
-
20 to +65
-
40 to +85
15
5
1 625
Telemetry
DIP
NDL7910P
-
20 to +70
-
40 to +85
7
0.5
1 550
*2
2.5 G EA modulator
integrated module
BFY
NX8562LB
-
20 to +65
-
40 to +85
20
20
1 550
*2
1 550 CW LD module
BFY
NX8563LB
-
20 to +65
-
40 to +85
20
10
ITU-T
*3
1 550 CW LD module
BFY
*1 Under development
*2 Wavelength selectable for ITU-T standards upon request
*3 Wavelength selectable for ITU-T standards
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