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LASER DIODE
NDL7408P Series
1 310 nm InGaAsP STRAINED MQW DC-PBH LASER DIODE
COAXIAL MODULE WITH SINGLE MODE FIBER
1994©
Document No. P10532EJ3V0DS00 (3rd edition)
Date Published June 1996 P
Printed in Japan
DATA SHEET
The mark •••• shows major revised points.
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 λC = 1 310 nm
•Two types of output power :1.0 mW (NDL7408PK Series)
0.2 mW (NDL7408PL Series)
•Low threshold current lth = 12 mA TYP. @TC = 25 °C
•High cut-off frequency fC = 2.0 GHz
•InGaAs monitor PIN-PD
•Wide operating temperature range: −40 to +85 °C
•Based on Bellcore TA-NWT-000983
2
NDL7408P Series
PACKAGE DIMENSIONS (in millimeters)
NDL7408P1
NDL7408P2 NDL7408P4
12.6±0.20.2
6.3±0.2
3.6±0.5
5.1±0.1
5.1±0.2
10.2±0.2
12.6±0.2
7±0.2
φ
3.81
±0.3 2.54±0.3
21.0±1.0
12.6±0.2
1.27±0.2
2.54±0.3
Optical Fiber
SM-9/125
Length: 1 m
PIN 2, 3, 6, 7
4– 0.45
PIN 1, 4, 5, 8
4–0.5
3
4
3
2
1
5
6
7
8
2
PIN CONNECTIONS
Pin No.
Function
1
2
3
4
5
6
7
8
NC
PD anode
PD cathode
NC
NC
LD cathode
LD anode
NC
Optical Fiber
SM-9/125
Length: 1 m
φ
7±0.2
φ
7±0.2
5
5.3±0.8
4.1±0.8
15
515
515
20±1.0 25.3±1.0
19.5±1.0
25.6±1.0
20±1.0 25.3±1.0
φ
6±0.1
φ
0.45±0.05
φ
0.9
P.C.D. = 2
φ
φ
P.C.D. = 2
φ
φ
7±0.2
4
1
3
2
PD
LD
CASE
Optical Fiber
SM-9/125
Length: 1 m
4.0±0.2
φ
6±1.0
12.7±0.2
17.0±0.2
7.2±0.3
4
1
3
2
PD
LD
CASE
φ
0.45±0.05
φ
2.22–
Optical Fiber
SM-9/125
Length: 1 m
0.5±0.2
0.3
0.3
2.5±1.0
φ
7±0.2
4–
φ
0.45±0.05
φ
16
2– 2.5
φ
7±0.2
12±0.15
3
2
PD
4
1
LD CASE
φ
3.2±0.25
φ
3.2±0.25
2.0±0.2
1.0±0.1
3.7±0.3
16.0
43
2
1
P.C.D. = 2
φ
43
2
1
4
321
φ
0.9
φ
0.9
φ
3.2±0.25
NDL7408P
•
3
NDL7408P Series
ORDERING INFORMATION
NDL7408
P
P1
P2
: No Flange
: Flat Mount Flange
: Ver tical Mount Flange
K
L: 1.0 mW
: 0.2 mW
No suffix
C
D
: Without Connector
: With FC-PC Connector
: With SC-PC Connector
Part Number Ranks Descript i on
NDL7408PK M 1.0 m W Without Connector
NDL7408PKC No Flange With FC-PC Connector
NDL7408PKD Wit h S C-PC Connecto r
NDL7408P1K M 1.0 m W Without Connector
NDL7408P1KC Flat Mount Flange With FC-PC Connector
NDL7408P1KD Wit h S C-PC Connector
NDL7408P2K M 1.0 m W Without Connector
NDL7408P2KC Vertic al Fl ange With FC-PC Connector
NDL7408P2KD Wit h S C-PC Connector
NDL7408P4K M 1.0 m W Without Connector
NDL7408P4KC 8-pin DIP Wit h FC-P C Connector
NDL7408P4KD Wit h S C-PC Connector
NDL7408PL N 0.2 m W Without Connector
NDL7408PLC No Flange With FC-PC Connector
NDL7408PLD Wit h S C-PC Connecto r
NDL7408P1L N 0.2 m W Without Connector
NDL7408P1LC Flat Mount Flange With FC-P C Connector
NDL7408P1LD Wit h S C-PC Connecto r
NDL7408P2L N 0.2 m W Without Connector
NDL7408P2LC Vertic al Fl ange With FC-PC Connector
NDL7408P2LD Wit h S C-PC Connecto r
NDL7408P4L N 0.2 m W Without Connector
NDL7408P4LC 8-pin DIP W i th FC-PC Connector
NDL7408P4LD Wit h S C-PC Connecto r
•
4
NDL7408P Series
ABSOLUTE MAXIMUM RATINGS (TC = 25 °
°°
°C, unless otherwise specified)
Parameter Symbol Ratings Unit
Forward Current of LD IFIth + 50 mA
Reverse Volt age of LD VR2.0 V
Forward Current of PD IF10 mA
Reverse Voltage of PD VR20 V
Operating Case Temperature TC−40 to +85 °C
Storage Temperature Tstg −40 to +85 °C
Lead Soldering Temperature (10 s) Tsld 260 °C
ELECTRO-OPTICAL CHARACTERISTICS (TC = 25 °
°°
°C, unless otherwise specified)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
Operating Voltage Vop *1 1.1 1.3 V
Threshold Current Ith 10 25 mA
TC = +85 °C2550
Modulation Current Imod Pf = 1.0 mW @NDL7408PK Seri es 15 30 mA
Pf = 0.2 m W @NDL7408PL Series
η
d0.025 0.050 W/A
TC = +85 °C 0.018 0.035
η
d0.010 0.015
TC = +85 °C 0.005 0.010
Center Emiss i on Wavelength λC*1, RMS (−20 dB) 1 290 1 310 1 330 nm
TC = −40 to +85 °C 1 260 1 360
Temperat ure Dependenc e of
Center Emiss i on Wavelength ∆λ/∆TT
C
= −40 to +85 °C0.40.5nm/
°
C
Spectral Width σ*1, RMS (−20 dB) 1.3 2.5 nm
TC = +85 °C1.54
Cut-off Frequency fC−3 dB 2.0 GHz
Rise Time tr10 to 90 % 0.2 0.5 ns
Fall Time tf90 to 10 % 0.3 0.5 ns
Monitor Current of P D ImVRD = 5 V, *1 100 700
µ
A
Dark Current of PD IDVRD = 5 V 0.1 10 nA
Tracking E rror
γ
*2 Im = const., TC = −40 to +85 °C0.51.0dB
*1 Pf = 1.0 mW @NDL7408PK Series
Pf = 0.2 mW @NDL7408PL Series
*2
γ
= 10 log Pf
XmW
Different i al Effi ciency f rom Fiber
for NDL7408PK S eries
Different i al Effi ciency f rom Fiber
for NDL7408PL S eri es
T
C
= –40 to +85 ˚C
I
m
P
f
P
f
X
I
m
0(@ P
f
(25 ˚C)= X mW)
X = 1.0 mW @NDL7408PK Series
X = 0.2 mW @NDL7408PL Series
T
C
= 25 ˚C
XmW
6
NDL7408P Series
TYPICAL CHARACTERISTICS (TC = −
−−
−40 to +85 °
°°
°C)
Forward Current IF (mA)
Output Power from Fiber for
NDL7408PL Series Pf (mW)
500
0.1
0.2
0.3
0.4
0.5
100 150
Output Power from Fiber for
NDL7408PK Series Pf (mW)
50 100 150
1.5
1.0
0.5
0
OUTPUT POWER FROM FIBER
vs. FORWARD CURRENT FOR
NDL7408PL SERIES
OUTPUT POWER FROM FIBER
vs. FORWARD CURRENT FOR
NDL7408PK SERIES
TC = –40 ˚C
TC = +25 ˚C
TC = +70 ˚C
TC = +85 ˚C
TC = –40 ˚C
TC = +25 ˚C
TC = +70 ˚C
TC = +85 ˚C
THRESHOLD CURRENT AND OPERATION
CURRENT vs. CASE TEMPERATURE
Case Temperature TC (˚C)
Threshold Current Ith (mA)
Operation Current Iop (mA)
–60
1
2
3
5
10
20
30
50
100
–40 –20 0 20 40 60 80 100
Iop (@ Pf = 0.2/1.0 mW)
Ith
TEMPERATURE DEPENDENCE OF
DIFFERENTIAL EFFICIENCY FROM FIBER
FOR NDL7408PL SERIES
Case Temperature TC (˚C)
–60
Differential Efficiency from Fiber for
NDL7408PL Series d (W/A)
η
–40 –20 0 20 40 60 80 100
0.01
0
0.02
0.03
TEMPERATURE DEPENDENCE OF
DIFFERENTIAL EFFICIENCY FROM FIBER
FOR NDL7408PK SERIES
Case Temperature TC (˚C)
Differential Efficiency from Fiber for
NDL7408PK Series d (W/A)
0
–60
0.02
0.04
0.06
0.08
0.10
–40 –20 0 20 40 60 80 100
TEMPERATURE DEPENDENCE OF CENTER
WAVELENGTH FOR NDL7408P SERIES
Case Temperature TC (˚C)
Center Wavelength C (nm)
–60
1 260
1 280
1 300
1 320
1 340
1 360
–40 –20 0 20 40 60 80 100
ηλ
Forward Current IF (mA)
7
NDL7408P Series
TYPICAL CHARACTERISTICS (TC = 25 °
°°
°C)
LONGITUDINAL MODE FROM FIBER
FOR NDL7408P SERIES
Wavelength λ (nm)
Relative Intensity
1 300
OUTPUT POWER FROM FIBER vs.
LD MONITOR CURRENT
Output Power from Fiber P
f
(mW)
0.501 310 1 320
LD Monitor Current I
m
(mA)
0.5
1
1.5
1.0 1.5
NDL7408PK Series
NDL7408PL Series
FORWARD CURRENT vs.
FORWARD VOLTAGE FOR
NDL7408P SERIES
Forward Voltage V
F
(V)
Forward Current I
F
(mA)
0
10
20
30
40
50
12
FREQUENCY RESPONSE (P
f
= 0.2 / 1.0 (mW))
Modulation Frequency f (GHz)
Relative Intensity (dB)
10
–12
–9
–6
–3
0
3
6
9
2345
8
NDL7408P Series
1.3
µ
µµ
µ
m FABRY-PEROT DC-PBH LASER DIODE FAMILY
Features
Package
φ
5.6 m m Small Can NDL7001 With monit or photo diode
φ
5.6 m m Small Can with Lens NDL7001L With monit or photo diode
4-pin Coaxial Module with SMF NDL7401P Series
NDL7408P Series Without TEC
With monit or photo diode
REFERENCE
Docum ent Nam e Docum ent No.
NEC semiconductor device reliability/qualit y c ontrol syst em LEI-1201
Quality grades on NEC semic onductor devic es IEI -1209
Semi conductor devi ce m ount i ng technology manual C10535E
Guide to quality assurance for semic onductor devic es MEI-1202
Semi conductor select i on gui de X10679E
Part Number Remarks
NDL7408P Series
CAUTION
Within this device there exists GaAs (Gallium Arsenide) material which is a harmful
substance if ingested. Please do not under any circumstances break the hermetic seal.
INVISIBLE LASER RADIATION
AVOID DIRECT EXPOSURE TO BEAM
OUTPUT POWER mw MAX
WAVELENGTH nm
CLASS IIIb LASER PRODUCT
SEMICONDUCTOR LASER
AVOID EXPOSURE-Invisible
Laser Radiation is emitted from
this aperture
NEC Building, 7-1, Shiba 5-chome,
Minato-ku, Tokyo 108-01, Japan
Type number:
Manufactured:
Serial number:
This product conforms to FDA
regulations as applicable
to standards 21 CFR Chapter 1,
Subchapter J.
The export of this product from Japan is prohibited without governmental license. To export or re-export this product from
a country other than Japan may also be prohibited without a license from that country. Please call an NEC sales
representative.
No part of this document may be copied or reproduced in any form or by any means without the prior written
consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this
document.
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual
property rights of third parties by or arising from use of a device described herein or any other liability arising
from use of such device. No license, either express, implied or otherwise, is granted under any patents,
copyrights or other intellectual property rights of NEC Corporation or others.
While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices,
the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or
property arising from a defect in an NEC semiconductor device, customer must incorporate sufficient safety
measures in its design, such as redundancy, fire-containment, and anti-failure features.
NEC devices are classified into the following three quality grades:
"Standard", "Special", and "Specific". The Specific quality grade applies only to devices developed based on
a customer designated "quality assurance program" for a specific application. The recommended applications
of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each
device before using it in a particular application.
Standard: Computers, office equipment, communications equipment, test and measurement equipment,
audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment and industrial robots
Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed
for life support)
Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems or medical equipment for life support, etc.
The quality grade of NEC devices in "Standard" unless otherwise specified in NEC's Data Sheets or Data Books.
If customers intend to use NEC devices for applications other than those specified for Standard quality grade,
they should contact NEC Sales Representative in advance.
Anti-radioactive design is not implemented in this product.
M4 94. 11
