DATA SHEET
LASER DIODE
NX7460LE
1 480 nm EDFA APPLICATION
InGaAsP STRAINED MQW DC-PBH LASER DIODE MODULE
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
15.24
2.54
4–
φ
2.67
22.3
PACKAGE DIMENSIONS
in millimeters
#7
Thermistor
TOP VIEW
#1
Case
8.89±0.13 13.3
–0.0
1.25
4.0±0.15
+1.0
+
–
#14
7
8
1
14
12.7±0.15
6.0
LD
#8
PD
0.5
20.83±0.13
26.04±0.13
Optical Fiber (SMF)
Length: 1 m MIN.
Pin No.
1
2
3
4
5
6
7
PIN CONNECTIONS
Function
Cooler Anode
Thermistor
PD Anode
PD Cathode
Case Ground
NC
NC
Pin No.
Function
8
NC
9
NC
10
LD Anode,
Case Ground
11
LD Cathode
12
NC
13
Case Ground
14
Cooler Cathod
0.30
8.2±0.2
5.6
1.0
29.97±0.25
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. P14127EJ2V0DS00 (2nd edition)
Date Published September 1999 NS CP(K)
Printed in Japan
The mark
•
shows major revised points.
5.15
Cooler
0.9
©
1999
NX7460LE
ORDERING INFORMATION
Part Number
NX7460LE
NX7460LE-BA
NX7460LE-CA
Available Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
ABSOLUTE MAXIMUM RATINGS (T
C
= 25 °C, unless otherwise specified)
Parameter
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)
Symbol
I
F
V
R
I
F
V
R
T
C
T
stg
T
sld
Ratings
700
2.0
10
20
–20 to +65
–40 to +85
260
Unit
mA
V
mA
V
°C
°C
°C
ELECTRO-OPTICAL CHARACTERISTICS (T
LD
= 25 °C, T
C
= 0 to +65 °C)
Parameter
Threshold Current
Forward Voltage
Optical Output Power from Fiber
Center Wavelength
Spectrum Width
Isolation
Symbol
I
th
V
F
P
f
λ
C
σ
I
S
CW
I
F
= 550 mA
I
F
= 550 mA
I
F
= 550 mA, RMS (–20 dB)
I
F
= 550 mA, RMS (–20 dB)
1 470 nm to 1 490 nm
20
120
1 470
Conditions
MIN.
TYP.
25
2.2
140
1 480
4.0
1 490
8.0
MAX.
35
2.7
Unit
mA
V
mW
nm
nm
dB
2
Data Sheet P14127EJ2V0DS00
NX7460LE
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Monitor PD: T
LD
= 25 °C, T
C
= 0 to +65 °C)
Parameter
Monitor Current
Monitor Dark Current
Tracking Error
Symbol
I
m
I
D
γ
*1
Conditions
V
R
= 5 V, I
F
= 550 mA
V
R
= 5 V
I
m
= const.
MIN.
500
TYP.
1 000
2.0
MAX.
1 500
10
0.5
Unit
µ
A
nA
dB
*1
γ
= 10 log
P
f
120 mW
P
f
(mW)
T
LD
= T
C
= 25 ˚C
X
P
f
T
LD
= 25 ˚C
T
C
= 0 to +65 ˚C
0
I
m
(@P
f
(25 ˚C) = 120 mW)
I
m
ELECTRO-OPTICAL CHARACTERISTICS
(Applicable to Thermistor and TEC: T
LD
= 25 °C, T
C
= 0 to +65 °C)
Parameter
Thermistor Resistance
B Constant
Cooler Current
Cooler Voltage
Cooling Capacity
Symbol
R
B
I
C
V
C
T
LD
= 25 °C
Conditions
MIN.
9.5
3 300
TYP.
10.0
3 400
1.0
3.5
40
MAX.
10.5
3 500
1.25
4.3
Unit
kΩ
K
A
V
K
∆
T = 40 K
∆
T = 40 K
I
C
= 1.25 A, I
F
= 660 mA
∆
T
*1
*1
∆
T = T
C
– T
LD
Data Sheet P14127EJ2V0DS00
3
NX7460LE
TYPICAL CHARACTERISTICS (T
C
= 25 °C)
OPTICAL OUTPUT POWER FROM FIBER vs.
FORWARD CURRENT
Optical Output Powr from Fiber P
f
(mW)
150
LONGITUDINAL MODE
100
50
0
300
Forward Current I
F
(mA)
600
Relative Intensity (10 dB/div.)
1 430
1 480
Wavelength
λ
(nm)
1 530
Remark
The graphs indicate nominal characteristics.
4
Data Sheet P14127EJ2V0DS00
NX7460LE
LD FAMILY FOR DENSE WDM APPLICATION
Absolute Maximum Ratings
Part Number
T
C
(°C)
T
stg
(°C)
Typical Characteristics
I
th
(mA)
TYP.
NDL7540PA
−20
to +65
−40
to +85
40
P
f
(mW)
MIN.
90
λ
C
(nm)
TYP.
1 480
1 480 nm pump LD
module
NX7460LE
0 to +65
−40
to +85
25
120
1 480
1 480 nm pump LD
module
NX8501 Series
NX8561JD
NX7660JC
*1
*1
Description
Package
BFY
BFY
0 to +65
0 to +65
−20
to +65
−20
to +70
−20
to +65
−20
to +65
−40
to +85
−40
to +85
−40
to +85
−40
to +85
−40
to +85
−40
to +85
20
20
15
7
2
3
5
0.5
1 510
1 510
1 625
1 550
*2
Telemetry
Telemetry
Telemetry
2.5 G EA modulator
integrated module
1 550 CW LD module
1 550 CW LD module
Coaxial
DIP
DIP
BFY
NDL7910P
NX8562LB
NX8563LB
20
20
20
10
1 550
*2
*3
BFY
BFY
ITU-T
*1
Under development
*2
Wavelength selectable for ITU-T standards upon request
*3
Wavelength selectable for ITU-T standards
Data Sheet P14127EJ2V0DS00
5
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