Data Sheet
October 2005
D371-Type Digital, Uncooled DFB
Laser Module
Applications
Long-reach SONET OC-3/OC-12 systems
Telecommunications
Secure digital data systems
Benefits
Easily board mounted
Requires no lead bending
No additional heat sinks required
The low-profile D371-type laser module is ideally suited for
short- and long-haul SONET and other high-speed digital appli-
cations.
Pin compatible with industry-standard, 14-pin laser
module
Highly efficient DFB-MQW laser structure allows for
lower threshold and drive currents, and reduced
power consumption
Features
Eight-pin package suitable for SONET applications
Narrow linewidth, distributed-feedback, multiquan-
tum-well (DFB-MQW)1.3 µm laser with single-mode
fiber pigtail
Wide operating temperature range:
–40 °C to +85 °C
No TEC required
High output power: typical 2.0 mW peak power cou-
pled into single-mode fiber
Hermetically sealed active components
Internal back-facet monitor
Qualification program:
Telcordia Technologies
™
TA-983
.
Description
The D371-type uncooled laser module consists of a
laser diode coupled to a single-mode fiber pigtail. The
device is available in a standard, 8-pin configuration
(see Figure 1 and/or Table 1) and is ideal for long-
reach (SONET) and other high-speed digital applica-
tions.
The laser diode is a narrow linewidth (<1 nm) DFB-
MQW single-mode laser and an InGaAs PIN photo-
diode back-facet monitor in an epoxy-free, hermetically
sealed package.
D371-Type Digital, Uncooled DFB
Laser Module
Data Sheet
October 2005
Table 1. Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
Connection
NC/reserved
Case ground
NC/reserved
Photodiode cathode
Photodiode anode
Laser diode cathode
Laser diode anode
NC/reserved
Description
(continued)
The device characteristics listed in this document are
met at 2.0 mW output power. Higher- or lower-power
operation is possible. Under conditions of a fixed pho-
todiode current, the change in optical output is typically
±0.5 dB over an operating temperature range of –40 °C
to +85 °C.
This device incorporates the CyOptics Laser 2000
manufacturing process. Laser 2000 is a low-cost plat-
form that targets high-volume manufacturing and
tighter product distributions on all optical subassem-
blies. The platform incorporates an advanced optical
design that is produced on a highly automated produc-
tion line. The Laser 2000 platform is qualified for the
central office and uncontrolled environments, and can
be used for applications requiring high performance
and low cost.
4
3
2
1
5
6
7
8
1-900 (C)
Figure 1. D371-Type Digital Uncooled DFB Laser Module Schematic, Top View
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter
Maximum Peak Laser Drive Current or
Maximum Fiber Power*
Peak Reverse Laser Voltage:
Laser
Monitor
Monitor Forward Current
Operating Case Temperature Range
Storage Case Temperature Range
Lead Soldering Temperature/Time
Relative Humidity (noncondensing)
* Rating varies with temperature.
Symbol
I
OP
P
MAX
V
RL
V
RD
I
FD
T
C
T
stg
—
RH
Min
—
—
—
—
—
–40
–40
—
—
Max
150
10
2
20
2
85
85
260/10
85
Unit
mA
mW
V
V
mA
°C
°C
°C/s
%
2
For additional information and latest specifications, see our website:
www.cyoptics.com
Data Sheet
October 2005
D371-Type Digital, Uncooled DFB
Laser Module
Handling Precautions
CAUTION: This device is susceptible to damage as a result of electrostatic discharge (ESD). Take proper
precautions during both handling and testing. Follow guidelines such as JEDEC Publication
No. 108-A (Dec. 1988).
CyOptics employs a human-body model (HBM) for ESD-susceptibility testing and protection-design evaluation.
ESD voltage thresholds are dependent on the critical parameters used to define the model. A standard HBM (resis-
tance = 1.5 kΩ, capacitance = 100 pF) is widely used and can be used for comparison purposes.
Laser Safety Information
Class IIIb Laser Product
FDA/CDRH Class IIIb laser product. All versions are Class IIIb laser products per CDRH, 21 CFR 1040 Laser Safety
requirements. All versions are classified Class 3B laser products consistent with
IEC
®
60825-1: 1993. This device
family has been classified with the FDA under accession number 8720010. Measurements were made to classify
the product per
IEC
60825-1: 1993.
This product complies with 21 CFR 1040.10 and 1040.11
8.3
µm
single-mode pigtail with optional connector
Wavelength = 1.3
µm
Maximum power = 10 mW
Because of size constraints, labeling is not affixed to the module but attached to the outside of the shipping carton.
Product is not shipped with power supply.
Caution: Use of controls, adjustments, and procedures other than those specified herein may result in haz-
ardous laser radiation exposure.
DANGER
INVISIBLE LASER RADIATION
IS EMITTED FROM THE END
OF FIBER OR CONNECTOR
Avoid direct exposure to beam
Do not view beam directly with
optical instruments
INVISIBLE LASER RADIATION EMITTED FROM END OF FIBER OR CONNECTOR
Avoid exposure to beam
Class IIIb Laser Product
per CDRH, 21 CFR 1040
Max. Output: 10 mW
Wavelength: 1.3
µm
For additional information and latest specifications, see our website:
www.cyoptics.com
3
D371-Type Digital, Uncooled DFB
Laser Module
Data Sheet
October 2005
Electrical/Optical Characteristics
Table 2. Electrical/Optical Characteristics
(over operating temperature range unless otherwise noted)
Parameter
Operating Temperature
Range
Optical Output Power*
Threshold Current
Modulation Current
Slope Efficiency
†
Center Wavelength
Spectral Width (–20 dB)
Side-mode Suppression
Ratio
Tracking Error
Spontaneous Emission
Rise/Fall Times
Forward Voltage
Input Impedance
Monitor Current
Monitor Dark Current
Wavelength Tempera-
ture Coefficient
Symbol
T
P
F
I
TH
I
MOD
SE
λ
C
∆λ
SMSR
TE
P
TH
t
R
, t
F
V
F
R
I
MON
I
D
—
‡
Test Conditions
—
CW, nominal
T = 25 °C
T = full range
CW, P
F
= 2.0 mW, T = 25 °C
CW, I
MON
= const. T = full range
CW, P
F
= 2.0 mW, T = 25 °C
P
F
= 2.0 mW, CW
P
F
= 2.0 mW, 622 Mb/s
CW, P
F
= 2.0 mW
I
MON
= constant, CW
I = (0.9) I
TH
10%—90% pulse
T = 25 °C
CW
—
V
R
= 5 V
V
R‡
= 5 V
—
Min
–40
—
4
2
10
7.5
67
1280
—
30
—
—
—
—
3
50
—
—
Typ
—
2
11
—
20
—
—
—
—
40
0.5
—
0.25
1.1
—
—
10
0.09
Max
85
—
15
50
30
55
200
1335
1
—
—
50
0.5
1.6
8
1000
200
0.1
Unit
°C
mW
mA
mA
mA
µW/mA
nm
nm
dB
dB
µW
ns
V
Ω
µA
nA
nm/°C
* 1 mW power option also available. See Table 4 for more information.
† The slope efficiency is used to calculate the modulation current for a desired output power. This modulation current plus the threshold current
comprise the total operating current for the device.
‡ V
R
= reverse voltage.
4
For additional information and latest specifications, see our website:
www.cyoptics.com
Data Sheet
October 2005
D371-Type Digital, Uncooled DFB
Laser Module
Outline Diagram
Dimensions are in inches and (millimeters).
TRADEMARK, CODE, LASER SERIAL NUMBER,
AND/OR DATE CODE IN APPROXIMATE AREA SHOWN
4
3
2
1
5
6
7
8
1.06 (27.0)
MAX
MIN
0.52 (13.2)
39.37 (1000) MIN
PIGTAIL LENGTH
0.045 (1.143)
0.20 (5.00)
0.010
(0.254)
0.29
(7.37)
0.165 (4.20)
0.016 (0.410)
0.100 (2.54)
0.300
(7.62)
0.110 (2.79)
0.085
(2.16)
0.17
(4.32)
0.30
(7.62)
For additional information and latest specifications, see our website:
www.cyoptics.com
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
