DATA SHEET
LASER DIODE
NDL7705P Series
1 500 nm OPTICAL FIBER COMMUNICATIONS
InGaAsP MQW-DFB LASER DIODE COAXIAL MODULE
DESCRIPTION
The NDL7705P Series is a 1 550 nm phase-shifted DFB (Distributed Feed-Back) laser diode module with optical
isolator. Multiple Quantum Well (MQW) structure is adopted to achieve stable dynamic single longitudinal mode
operation over wide temperature range of
40 to +85
C.
It is designed for all STM-1 and STM-4 applications.
FEATURES
• Peak emission wavelength
• Optical output power
• Wide operating temperature range
•
/4-phase-shifted DFB
• InGaAs monitor PIN-PD
• Internal optical isolator
p
= 1 550 nm
P
f
= 2.0 mW
T
C
=
40 to +85
C
PACKAGE DIMENSIONS
in millimeters
NDL7705P
Optical Fiber
SM-9/125
Length: 1 m
NDL7705P1
φ
0.9
Optical Fiber
SM-9/125
Length: 1 m
NDL7705P2
Optical Fiber
SM-9/125
Length: 1 m
φ
3.2±0.25
φ
3.2±0.25
φ
0.9
φ
3.2±0.25
φ
0.9
15
φ
7±0.2
3.4±0.8
15
15
8.2
28.1±1.0
φ
7±0.2
27.8±1.0
φ
7±0.2
27.8±1.0
2–
φ
2.2
8.2
8.2
4.6±0.8
20±1.0
4.0±0.2
0.5±0.2
2.0±0.2
φ
6±0.1
φ
6±1.0
12.7±0.2
17.0±0.2
PIN CONNECTIONS
1.0±0.1
PD
PIN CONNECTIONS
PD
PIN CONNECTIONS
7.2±0.3
3
2
P.C.D. =
φ
2
4
1
LD
Case
3
4 3
1 2
φ
1
6
2
3
4
1
φ
7±0.2
4 3
1 2
7±0.2
P.C.D. =
φ
2
P.C.D. =
φ
2
2–
φ
2.5
3
2.5±1.0
20±1.0
φ
0.45
±0.05
φ
0.45
±0.05
19.5±1.0
0.3
4–
φ
0.45
±0.05
0.3
2
PD
4
1
LD
Case
1
4
LD Case
2
The information in this document is subject to change without notice.
Document No. P12438EJ3V0DS00 (3rd edition)
Date Published September 1997 NS
Printed in Japan
The mark
shows major revised points.
©
1996
3.7±0.3
12±0.15
16.0
NDL7705P Series
ORDERING INFORMATION
Part Number
NDL7705P
NDL7705PC
NDL7705PD
NDL7705P1
NDL7705P1C
NDL7705P1D
NDL7705P2
NDL7705P2C
NDL7705P2D
Available 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
Vertical Mount Flange
Flat Mount Flange
Flange Type
No flange
ABSOLUTE MAXIMUM RATINGS (T
C
= 25
C, unless otherwise specified)
Parameter
Optical Output Power
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
P
f
I
F
V
R
I
F
V
R
T
C
T
stg
T
sld
Ratings
5.0
I
th
+50
2.0
2.0
15
Unit
mW
mA
V
mA
V
40 to +85
40 to +85
260
C
C
C
2
NDL7705P Series
ELECTRO-OPTICAL CHARACTERISTICS (T
C
=
40 to +85
C, unless otherwise specified)
Parameter
Forward Voltage
Threshold Current
Symbol
V
F
I
th
I
F
= 30 mA
T
C
= 25
C
T
C
= 85
C
Differential Efficiency form Fiber
Conditions
MIN.
0.9
15
35
0.070
0.035
0.120
0.075
2
TYP.
MAX.
1.3
Unit
V
mA
50
W/A
d
d
p
T
C
= 25
C
T
C
= 85
C
Temperature Dependence of
Differential Efficiency from Fiber
Peak Emission Wavelength
Side Mode Suppression Ratio
Rise Time
Fall Time
Monitor Current
Monitor Dark Current
Tracking Error
Relative Intensity Noise
d
= 10 log
P
f
= 1 mW
P
f
= 1 mW
I
b
= 0.9
I
th
I
b
= 0.9
I
th
d
(85
C)
d
(25
C)
3
dB
1 570
nm
dB
0.5
0.5
ns
ns
1 530
30
1 550
SMSR
t
r
t
f
I
m
I
D
*1
V
R
= 5 V, P
f
= 2 mW
V
R
= 5 V, T
C
= 25
C
I
m
= const. (P
f
= 2 mW, T
C
= 25
C)
Ref =
14 dB, P
f
= 1 mW
300
0.1
2 500
5
1.0
140
130
A
nA
dB
dB/Hz
RIN
*1
= 10 log
P
f
2.0 mW
(mW)
2
P
f
P
f
T
C
= 25 ˚C
T
C
= –40 to +85 ˚C
0
I
m
(@ P
f
(25 ˚C) = 2 mW)
I
m
3
NDL7705P Series
TYPICAL CHARACTERISTICS (T
C
= 25
C, unless otherwise specified)
OPTICAL OUTPUT POWER vs.
FORWARD CURRENT
˚C
˚C
5˚
C
4.0
4.0
OPTICAL OUTPUT POWER vs.
MONITOR CURRENT
T
C
= –40 ˚C
+25 ˚C
3.0
+85 ˚C
2.0
40
+ 25
Optical Output Power P
f
(mW)
+8
2.0
1.0
T
C
3.0
Optical Output Power P
f
(mW)
100
=–
1.0
0
20
40
60
80
0.0
0.4
0.8
1.2
1.6
2.0
Forward Current I
F
(mA)
Monitor Current I
m
(mA)
OPERATING CURRENT AND THRESHOLD
CURRENT vs. CASE TEMPERATURE
100
50
FORWARD CURRENT vs.
FORWARD VOLTAGE
Operating Current I
op
(mA),
Threshold Current I
th
(mA)
Forward Current I
F
(mA)
40
60
80
100
I
op
@P
f
= 2 mW
40
30
10
I
th
20
10
1
–60 –40
–20
0
20
0
0.5
1.0
1.5
2.0
2.5
Case Temperature T
C
(˚C)
Forward Voltage V
F
(V)
TEMPERATURE DEPENEDENCE OF
DIFFERENTIAL EFFICIENCY FROM FIBER
Differential Efficiency from Fiber
η
d
(W/A)
0.18
1 560
TEMPERATURE DEPENDENCE OF
PEAK EMISSION WAVELENGTH
Peak Emission Wavelength
λ
p
(nm)
1 555
0.12
1 550
0.06
1 545
0.00
–60 –40
–20
0
20
40
60
80
100
1 540
–60 –40
–20
0
20
40
60
80
100
Case Temperature T
C
(˚C)
Case Temperature T
C
(˚C)
4
NDL7705P Series
LONGITUDINAL MODE FROM FIBER
10
0
Relative Intensity (dB)
EYE DIAGRAM
–10
–20
–30
–40
–50
–60
–70
1 540.4
1 550.4
Wavelength
λ
(nm)
1 560.4
Time Base (500 ps/div.)
622 Mb/s-NRZ, Ref = –14 dB,
2 V
p-p
(6 dB ATT), I
b
= I
th
× 0.9
Relative Intensity
ERROR RATE CHARACTERISTICS
10
–6
10
–7
Bit Error Rate
T
C
= –40 ˚C,
Ref = –14 dB,
622 Mbps-NRZ,
2 V
p-p
,
I
b
= I
th
× 0.9
10
–6
10
–7
10
–8
10
–9
10
–10
T
C
= 25 ˚C,
Ref = –14 dB,
622 Mbps-NRZ,
2 V
p-p
,
I
b
= I
th
× 0.9
10
–6
10
–7
10
–8
10
–9
10
–10
T
C
= 85 ˚C,
Ref = –14 dB,
622 Mbps-NRZ,
2 V
p-p
,
I
b
= I
th
× 0.9
10
–8
10
–9
10
–10
10
–11
back to back
10
–11
back to back
10
–11
back to back
after 200 km
after 200 km
after 200 km
10
–12
10
–12
10
–12
–40 –39 –38 –37 –36 –35 –34 –33
–40 –39 –38 –37 –36 –35 –34 –33
–40 –39 –38 –37 –36 –35 –34 –33
Average Received Power P (dBm)
5
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