DATA SHEET
LASER DIODE
NX8501 Series
1 510 nm OPTICAL FIBER COMMUNICATIONS
InGaAsP STRAINED MQW DC-PBH LASER DIODE MODULE
DESCRIPTION
The NX8501 Series is a 1 510 nm phase-shifted DFB (Distributed Feed-Back) laser diode with single mode fiber.
The Multiple Quantum Well (MQW) structure is adopted to achieve stable dynamic single longitudinal mode operation
over wide temperature range of 0 to +65
°C.
It is designed for on-line monitoring of dense WDM fiber-optic networks.
FEATURES
•
•
•
•
•
•
Peak wavelength
Output power
Low threshold current
Wide operating temperature range
InGaAs monitor PIN-PD
Based on Bellcore TA-NWT-000983
λ
p
= 1 510 nm
P
f
= 2.0 mW
I
th
= 20 mA @ T
C
= 25
°C
T
C
= 0 to +65
°C
PACKAGE DIMENSIONS
in millimeters
NX8501AC
Optical Fiber
SM-9/125
Length: 1 m
3.2±0.25
0.9
Optical Fiber
SM-9/125
Length: 1 m
NX8501BC
3.2±0.25
7±0.2
0.9
Optical Fiber
SM-9/125
Length: 1 m
NX8501CC
3.2±0.25
7±0.2
0.9
5
15
27.4±1.0
2– 2.2
27.4±1.0
5
2.0±0.2
4.0±0.2
0.5±0.2
5
15
27.7±1.0
15
7±0.2
2.5±1.0
19.5±1.0
20±1.0
20±1.0
0.45±0.05
0.45±0.05
4– 0.45
±0.05
0.3
6±0.1
6±1.0
12.7±0.2
17.0±0.2
PIN CONNECTIONS
PD
PIN CONNECTIONS
PD
PIN CONNECTIONS
1.0±0.1
3.7±0.3
7.2±0.3
3 P.C.D. = 2
2
4 3
12
16
3
2
3
4
2
1
P.C.D. = 2
2– 2.5
0.3
PD
3
4
2
φ
7±0.2
4 3
12
7±0.2
P.C.D. = 2
4
1
Case
LD
4
1
LD
Case
1
LD Case
12±0.15
16.0
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. P13854EJ3V0DS00 (3rd edition)
Date Published March 1999 NS CP(K)
Printed in Japan
The mark
•
shows major revised points.
©
1998, 1999
NX8501 Series
OPTICAL FIBER DIMENSIONS
in millimeters
φ
900
µ
m Nylon pipe
φ
250
µ
m Corning SMF-28
φ
900
µ
m Nylon pipe
-BA: FC-PC connector
-CA: SC-PC connector
267±10
10
1 000 MIN.
Nylon pipe
Cave
Primary coat
φ
9
µ
m core
125
250
500
900
(
µ
m)
2
Data Sheet P13854EJ3V0DS00
NX8501 Series
ORDERING INFORMATION
Part Number
NX8501AC
NX8501AC-BA
NX8501AC-CA
NX8501BC
NX8501BC-BA
NX8501BC-CA
NX8501CC
NX8501CC-BA
NX8501CC-CA
NX8501AG
NX8501AG-BA
NX8501AG-CA
NX8501BG
NX8501BG-BA
NX8501BG-CA
NX8501CG
NX8501CG-BA
NX8501CG-CA
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
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 Flange
Flat Mount Flange
No Flange
Standard SMF
Vertical Flange
Flat Mount Flange
Flange Type
No Flange
Fiber Type
φ
250
µ
m Corning
SMF-28 with loose tube
*1
*1
Please refer to
OPTICAL FIBER DIMENSIONS.
ABSOLUTE MAXIMUM RATINGS (T
C
= 25
°
C, unless otherwise specified)
Parameter
Optical Output Power from Fiber
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
200
2.0
10
20
0 to +65
−40
to +85
260
Unit
mW
mA
V
mA
V
°C
°C
°C
Data Sheet P13854EJ3V0DS00
3
NX8501 Series
ELECTRO-OPTICAL CHARACTERISTICS (T
C
= 0 to +65
°
C, unless otherwise specified)
Parameter
Forward Voltage
Operating Current
Threshold Current
Differential Efficiency from Fiber
Peak Emission Wavelength
Side Mode Suppression Ratio
Spectral Line Width
Relative Intensity Noise
Rise Time
Fall Time
Monitor Current
Monitor Dark Current
Tracking Error
Symbol
V
F
I
op
I
th
Conditions
P
f
= 2.0 mW, T
C
= 25
°C
P
f
= 2.0 mW
P
f
= 0.2 to 1.0 mW, T
C
= 25
°C
P
f
= 2.0 mW
P
f
= 2.0 mW
P
f
= 2.0 mW
P
f
= 2.0 mW, 3 dB down, T
C
= 25
°C
P
f
= 2.0 mW, T
C
= 25
°C
10-90 %, T
C
= 25
°C,
P
f
= 2.0 mW
90-10 %, T
C
= 25
°C,
P
f
= 2.0 mW
V
R
= 5 V, P
f
= 2.0 mW, T
C
= 25
°C
V
R
= 5 V, T
C
= 25
°C
I
m
= const. (@ P
f
= 2.0 mW, T
C
= 25
°C)
−1.0
100
0.04
1 500
30
MIN.
TYP.
1.6
80
20
0.08
1 510
35
2
−155
0.3
0.3
1 000
10
−150
0.5
0.5
2 000
10
1.0
1 520
MAX.
2.0
100
30
Unit
V
mA
mA
W/A
nm
dB
MHz
dB/Hz
ns
ns
η
d
λ
p
SMSR
∆½
RIN
t
r
t
f
I
m
I
D
γ
*1
µ
A
nA
dB
*1
γ
= 10 log
P
f
2.0 mW
(mW)
P
f
T
C
= 25 ˚C
2.0
P
f
T
C
= 0 to +65 ˚C
0
I
m
(@ P
f
(25 ˚C) = 2.0 mW)
I
m
4
Data Sheet P13854EJ3V0DS00
NX8501 Series
TYPICAL CHARACTERISTICS (T
C
= 25
°
C, unless otherwise specified)
OUTPUT POWER FROM FIBER vs.
FORWARD CURRENT
3.0
Output Power from Fiber P
f
(mW)
OPERATING CURRENT AND THRESHOLD
CURRENT vs. CASE TEMPERATURE
60
Operating Current I
op
(mA),
Threshold Current I
th
(mA)
2.5
T
C
= 0 ˚C
2.0
25 ˚C
1.5
65 ˚C
1.0
0.5
50
40
30
20
I
th
10
0
–10
I
op
@P
f
= 2.0 mW
0
10
20
30
40
50
60
0
10
20
30
40
50
60
70
Forward Current I
F
(mA)
Case Temperature T
C
(˚C)
TEMPERATURE DEPENDENCE OF
DIFFERENTIAL EFFICIENCY FROM FIBER
Differential Efficiency from Fiber
η
d
(W/A)
FORWARD CURRENT vs.
FORWARD VOLTAGE
50
0.20
Forward Current I
F
(mA)
0.16
40
0.12
30
0.08
20
0.04
10
0
–10
0
10
20
30
40
50
60
70
0
0.5
1.0
1.5
2.0
Case Temperature T
C
(˚C)
Forward Voltage V
F
(V)
OUTPUT POWER FROM FIBER vs.
LD MONITOR CURRENT
3.0
Output Power from Fiber P
f
(mW)
LONGITUDINAL MODE FROM FIBER
0
–10
Relative Intensity (dB)
2.5
2.0
1.5
1.0
0.5
–20
–30
–40
–50
–60
0
0.5
1.0
1.5
–70
1 500
1 510
Wavelength
λ
(nm)
1 520
LD Monitor Current I
m
(mA)
Data Sheet P13854EJ3V0DS00
5
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