DATA SHEET
LASER DIODE
NDL7408P Series
1 310 nm InGaAsP STRAINED MQW DC-PBH LASER DIODE
COAXIAL MODULE WITH SINGLE MODE FIBER
DESCRIPTION
NDL7408P Series is a 1 310 nm laser diode coaxial module with single mode fiber. It has a strained Multiple
Quantum Well (st-MQW) structure and a built-in InGaAs monitor photo diode. It is recommended for junction or
access network systems. The series is available in two types of output power: 1.0 mW and 0.2 mW.
FEATURES
• Center wavelength
λ
C
= 1 310 nm
0.2 mW (NDL7408PL Series)
• Low threshold current
• High cut-off frequency
• InGaAs monitor PIN-PD
• Wide operating temperature range:
−40
to +85
°C
• Based on Bellcore TA-NWT-000983
l
th
= 12 mA TYP. @T
C
= 25
°C
f
C
= 2.0 GHz
• Two types of output power : 1.0 mW (NDL7408PK Series)
The information in this document is subject to change without notice.
Document No. P10532EJ3V0DS00 (3rd edition)
Date Published June 1996 P
Printed in Japan
The mark
•
shows major revised points.
©
1994
NDL7408P Series
•
PACKAGE DIMENSIONS (in millimeters)
NDL7408P
Optical Fiber
SM-9/125
Length: 1 m
NDL7408P1
φ
0.9
Optical Fiber
SM-9/125
Length: 1 m
φ
3.2±0.25
φ
7±0.2
φ
3.2±0.25
φ
7±0.2
15
25.3±1.0
2.0±0.2
20±1.0
4.0±0.2
φ
0.9
5
15
25.3±1.0
2–
φ
2.2
4.1±0.8
5.3±0.8
20±1.0
φ
0.45±0.05
φ
6±1.0
12.7±0.2
17.0±0.2
5
φ
0.45±0.05
φ
6±0.1
PD
PD
4 3
1 2
φ
7±0.2
4 3
1 2
1.0±0.1
3.7±0.3
7.2±0.3
P.C.D. =
φ
2
4
1
LD
CASE
3
2
P.C.D. =
φ
2
4
1
LD
CASE
3
2
NDL7408P2
Optical Fiber
SM-9/125
Length: 1 m
NDL7408P4
φ
0.9
12.6±0.2
φ
3.2±0.25
φ
7±0.2
12.6±0.2
21.0±1.0
Optical Fiber
SM-9/125
Length: 1 m
6.3±0.2
5
15
25.6±1.0
12.6±0.2
5.1±0.1
0.5±0.2
φ
7±0.2
5.1±0.2
10.2±0.2
3.6±0.5
2.5±1.0
19.5±1.0
0.3
0.3
4–
φ
0.45±0.05
0.2
3.81
±0.3
1.27±0.2
2.54±0.3
2.54±0.3
φ
1
6
2
3
4
1
P.C.D. =
φ
2
2–
φ
2.5
7±0.2
PIN CONNECTIONS
2
PD
3
4
LD
1
CASE
2
3
4
3
2
1
4–0.5
PIN 1, 4, 5, 8
5
6
7
8
Pin No.
1
2
3
4
5
6
7
8
Function
NC
PD anode
PD cathode
NC
NC
LD cathode
LD anode
NC
12±0.15
16.0
4–
φ
0.45
PIN 2, 3, 6, 7
2
NDL7408P Series
ORDERING INFORMATION
NDL7408
•
P : No Flange
P1 : Flat Mount Flange
P2 : Vertical Mount Flange
K : 1.0 mW
L : 0.2 mW
No suffix : Without Connector
C
D
Part Number
NDL7408PK
NDL7408PKC
NDL7408PKD
NDL7408P1K
NDL7408P1KC
NDL7408P1KD
NDL7408P2K
NDL7408P2KC
NDL7408P2KD
NDL7408P4K
NDL7408P4KC
NDL7408P4KD
NDL7408PL
NDL7408PLC
NDL7408PLD
NDL7408P1L
NDL7408P1LC
NDL7408P1LD
NDL7408P2L
NDL7408P2LC
NDL7408P2LD
NDL7408P4L
NDL7408P4LC
NDL7408P4LD
N
0.2 mW
8-pin DIP
N
0.2 mW
Vertical Flange
N
0.2 mW
Flat Mount Flange
N
0.2 mW
No Flange
M
1.0 mW
8-pin DIP
M
1.0 mW
Vertical Flange
M
1.0 mW
Flat Mount Flange
Ranks
M
1.0 mW
No Flange
: With FC-PC Connector
: With SC-PC Connector
Description
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
Without Connector
With FC-PC Connector
With SC-PC Connector
3
NDL7408P Series
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
I
th
+ 50
2.0
10
20
−40
to +85
−40
to +85
260
Unit
mA
V
mA
V
°C
°C
°C
ELECTRO-OPTICAL CHARACTERISTICS (T
C
= 25
°
C, unless otherwise specified)
Parameter
Operating Voltage
Threshold Current
Symbol
V
op
I
th
T
C
= +85
°C
Modulation Current
I
mod
P
f
= 1.0 mW @NDL7408PK Series
P
f
= 0.2 mW @NDL7408PL Series
Differential Efficiency from Fiber
for NDL7408PK Series
Differential Efficiency from Fiber
for NDL7408PL Series
Center Emission Wavelength
*1
Conditions
MIN.
TYP.
1.1
10
25
15
MAX.
1.3
25
50
30
mA
Unit
V
mA
η
d
T
C
= +85
°C
0.025
0.018
0.010
T
C
= +85
°C
0.005
1 290
1 260
0.050
0.035
0.015
0.010
1 310
1 330
1 360
0.4
0.5
W/A
η
d
λ
C
*1,
RMS (−20 dB)
T
C
=
−40
to +85
°C
nm
Temperature Dependence of
Center Emission Wavelength
Spectral Width
∆λ/∆T
σ
T
C
=
−40
to +85
°C
nm/°C
*1,
RMS (−20 dB)
T
C
= +85
°C
1.3
1.5
2.0
0.2
0.3
100
700
0.1
0.5
2.5
4
nm
Cut-off Frequency
Rise Time
Fall Time
Monitor Current of PD
Dark Current of PD
Tracking Error
f
C
t
r
t
f
I
m
I
D
−3
dB
10 to 90 %
90 to 10 %
V
RD
= 5 V,
*1
V
RD
= 5 V
I
m
= const., T
C
=
−40
to +85
°C
GHz
0.5
0.5
ns
ns
µ
A
10
1.0
nA
dB
γ
*2
*1
P
f
= 1.0 mW @NDL7408PK Series
P
f
= 0.2 mW @NDL7408PL Series
*2
γ
= 10 log
P
f
XmW
XmW
P
f
T
C
= 25 ˚C
T
C
= –40 to +85 ˚C
X
P
f
0
4
I
m
(@ P
f
(25 ˚C)= X mW)
X = 1.0 mW @NDL7408PK Series
X = 0.2 mW @NDL7408PL Series
I
m
NDL7408P Series
TYPICAL CHARACTERISTICS (T
C
=
−
40 to +85
°
C)
OUTPUT POWER FROM FIBER
vs. FORWARD CURRENT FOR
NDL7408PL SERIES
0.5
Output Power from Fiber for
NDL7408PL Series P
f
(mW)
T
C
= –40 ˚C
Output Power from Fiber for
NDL7408PK Series P
f
(mW)
T
C
= +25 ˚C
0.4
0.3
T
C
= +70 ˚C
T
C
= +85 ˚C
1.5
T
C
= –40 ˚C
T
C
= +25 ˚C
1.0
T
C
= +70 ˚C
T
C
= +85 ˚C
OUTPUT POWER FROM FIBER
vs. FORWARD CURRENT FOR
NDL7408PK SERIES
0.2
0.5
0.1
0
50
100
150
0
50
100
150
Forward Current I
F
(mA)
Forward Current I
F
(mA)
THRESHOLD CURRENT AND OPERATION
CURRENT vs. CASE TEMPERATURE
100
Center Wavelength
λ
C
(nm)
Threshold Current I
th
(mA)
Operation Current I
op
(mA)
50
30
20
10
5
3
2
1
–60 –40 –20
0
20
40
60
80
100
I
op
(@ P
f
= 0.2/1.0 mW)
I
th
1 360
TEMPERATURE DEPENDENCE OF CENTER
WAVELENGTH FOR NDL7408P SERIES
1 340
1 320
1 300
1 280
1 260
–60 –40
–20
0
20
40
60
80
100
Case Temperature T
C
(˚C)
TEMPERATURE DEPENDENCE OF
DIFFERENTIAL EFFICIENCY FROM FIBER
FOR NDL7408PL SERIES
0.03
Differential Efficiency from Fiber for
NDL7408PL Series
η
d (W/A)
Differential Efficiency from Fiber for
NDL7408PK Series
η
d (W/A)
0.10
Case Temperature T
C
(˚C)
TEMPERATURE DEPENDENCE OF
DIFFERENTIAL EFFICIENCY FROM FIBER
FOR NDL7408PK SERIES
0.08
0.02
0.06
0.04
0.01
0.02
0
–60 –40 –20
0
–60 –40 –20
0
20
40
60
80
100
0
20
40
60
80
100
Case Temperature T
C
(˚C)
Case Temperature T
C
(˚C)
6
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