NEC NDL7705P, NDL7705P1, NDL7705P2 Datasheet
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 Pf = 2.0 mW
• Wide operating temperature range TC =
•/4-phase-shifted DFB
• InGaAs monitor PIN-PD
• Internal optical isolator
p = 1 550 nm
40 to +85 C
NDL7705P
Optical Fiber
SM-9/125
Length: 1 m
φ
7±0.2
3.4±0.8
6±0.1
φ
PIN CONNECTIONS
φ
P.C.D. = 2
43
1
2
3.2±0.25
φ
7±0.2
φ
15
27.8±1.0
8.2
4.6±0.8
20±1.0
4
1
Case
PACKAGE DIMENSIONS
in millimeters
NDL7705P1
φ
0.45
±0.05
3
2
Optical Fiber
SM-9/125
Length: 1 m
φ
7±0.2
Optical Fiber
3
2
SM-9/125
Length: 1 m
φ
0.45
±0.05
P.C.D. = 2
φ
7±0.2
φ
φ
2– 2.2
6±1.0
φ
12.7±0.2
17.0±0.2
PIN CONNECTIONS
φ
43
2
1
3.2±0.25
15
8.2
1.0±0.1
4.0±0.2
20±1.0 27.8±1.0
2.0±0.2
3.7±0.3
0.9
φ
4
1
7.2±0.3
Case
PD
LD
φ
0.9
PD
LD
0.5±0.2
φ
16
NDL7705P2
15
8.2
2.5±1.0
–
φ
2
2.5
φ
28.1±1.0
19.5±1.0
φ
7±0.2
3.2±0.25
φ
0.3
PIN CONNECTIONS
P.C.D. = 2
2
1
3
4
12±0.15
16.0
0.9
3
PD
0.3
2
LD
4
φ
4– 0.45
±0.05
1
Case
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
ORDERING INFORMATION
Part Number Available Connector Flange Type
NDL7705P Without Connector No flange
NDL7705PC With FC-PC Connector
NDL7705PD With SC-PC Connector
NDL7705P1 Without Connector Flat Mount Flange
NDL7705P1C With FC-PC Connector
NDL7705P1D With SC-PC Connector
NDL7705P2 Without Connector Vertical Mount Flange
NDL7705P2C With FC-PC Connector
NDL7705P2D With SC-PC Connector
NDL7705P Series
ABSOLUTE MAXIMUM RATINGS (TC = 25
Parameter Symbol Ratings Unit
Optical Output Power P
Forward Current of LD I
Reverse Voltage of LD V
Forward Current of PD I
Reverse Voltage of PD V
Operating Case Temperature T
Storage Temperature T
Lead Soldering Temperature (10 s) T
f
F
R
F
R
C
stg
sld
C, unless otherwise specified)
5.0 mW
Ith+50 mA
2.0 V
2.0 mA
15 V
40 to +85
40 to +85
260
C
C
C
2
NDL7705P Series
ELECTRO-OPTICAL CHARACTERISTICS (TC =
40 to +85
C, unless otherwise specified)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
Forward Voltage V
Threshold Current I
Differential Efficiency form Fiber
F
IF = 30 mA 0.9 1.3 V
th
TC = 25 C15mA
C
T
= 85 C3550
d
TC = 25 C 0.070 0.120 W/A
TC = 85 C 0.035 0.075
Temperature Dependence of
Differential Effi c i ency from Fiber
Peak Emission Wavel ength
d
d = 10 log
p
Pf = 1 mW 1 530 1 550 1 570 nm
d (85 C)
d
(25 C)
3
2dB
Side Mode Suppression Ratio SMSR Pf = 1 mW 30 dB
Rise Time t
Fall Time t
Monitor Current I
Monitor Dark Current I
Tracking Error
r
Ib = 0.9 I
f
Ib = 0.9 I
m
VR = 5 V, Pf = 2 mW 300 2 500
D
VR = 5 V, TC = 25 C0.15nA
*1
Im = const. (Pf = 2 mW, TC = 25 C) 1.0 dB
Relative Intensity Noise RIN Ref = 14 dB, Pf = 1 mW
th
th
140
0.5 ns
0.5 ns
130 dB/Hz
A
*1
= 10 log
f
P
2.0 mW
(mW)
P
f
2
P
f
0
I
m
(@ P
f
(25 ˚C) = 2 mW)
TC = 25 ˚C
T
C
= –40 to +85 ˚C
I
m
3
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