AGERE D374

Data Sheet
December 2000
D374-Type Digital Uncooled 2.5 Gbits/s
Laser Module
Applications
■
Short-reach SONET OC-48 systems
■
SDH STM-16 systems
■
Telecommunications
■
Secure digital data systems
Benefits
The low-profile D374-Type Laser Module is ideally suited for
short- and long-reach SONET and other high-speed digital
applications.
Features
■
2.5 Gbits/s operation
■
Eight-pin package suitable for SONET/SDH applications
■
MQW F-P 1.3 µm laser with single-mode fiber pigtail
■
Wide operating temperature range:
–40 °C to +85 °C
■
No TEC required
■
25 Ω input impedance
■
High output power: typically 1.0 mW peak power
coupled into single-mode fiber; 0.2 mW versions
available
■
Hermetically sealed active components
■
Internal back-facet monitor
■
Qualification program: Telcordia Technologies * TA983
* Telcordia Technologies is a registered trademark of Telcordia
Technologies, Inc.
■
Easily board mounted
■
Gull wing leads
■
No additional heat sinks required
Description
The D374-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
short-reach and other high-speed digital applications. It is developed specifically for 2.5 Gbits/s applications.
The module includes a multiquantum-well FabryPerot (MQW F-P) laser and an InGaAs PIN photodiode back-facet monitor in an epoxy-free, hermetically sealed package.
Data Sheet
December 2000
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
Description (continued)
and uncontrolled environments, and can be used for
applications requiring high performance and low cost.
The device characteristics listed in this document are
met at 1.0 mW output power. Higher- or lower-power
operation is possible. Under conditions of a fixed photodiode current, the change in optical output is typically
±0.5 dB over an operating temperature range of –40 °C
to +85 °C.
Table 1. Pin Descriptions
Pin Number
Connection
1
2
3
4
5
6
7
8
NC/reserved
Case ground
NC/reserved
PD cathode
PD anode
Laser diode anode (+)
Laser RF input cathode (–), 25 Ω
Laser diode anode (+)
This device incorporates the new Laser 2000 manufacturing process developed by the Optoelectronic unit of
Agere Systems Inc. Laser 2000 is a low-cost platform
that targets high-volume manufacturing and tight product distributions on all optical subassemblies. This platform incorporates an advanced optical design that is
produced on a highly automated production line. The
Laser 2000 platform is qualified for the central office
4
3
2
1
5
6
7
8
1-900
Figure 1. D374-Type Digital Uncooled 2.5 Gbits/s 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 absolute 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)
Symbol
Min
Max
Unit
IOP
PMAX
—
—
150
10
mA
mW
VRL
VRD
IFD
TC
Tstg
—
RH
—
—
—
–40
–40
—
—
2
20
2
85
85
260/10
85
V
V
mA
°C
°C
°C/s
%
* Rating varies with temperature.
2
Agere Systems Inc.
Data Sheet
December 2000
D374-Type Digital Uncooled 2.5 Gbits/s 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. 108A (Dec. 1988).
Although protection circuitry is designed into the device, take proper precautions to avoid exposure to ESD.
Electrical/Optical Characteristics
Table 2. Electrical/Optical Characteristics (over operating temperature range unless otherwise noted)
Parameter
Operating Temperature
Range
Optical Output Power*
Threshold Current
Symbol
Test Conditions
Min
Typ
Max
Unit
T
—
–40
—
85
°C
PF
ITH
CW, nominal
T = 25 °C
T = full range
CW, PF = 1.0 mW, T = 25 °C
CW, IMON = constant,
T = full range
CW, PF = 1.0 mW, T = 25 °C
PF = 1.0 mW, CW
PF = 1.0 mW, 155 Mbits/s
IMON = constant, CW
I = (0.9) ITH
10%—90% pulse
T = 25 °C
At bias coil
—
VR ‡ = 5 V
VR ‡ = 5 V
—
—
4.5
1
10
8
1
9
—
15
—
—
15
45
20
35
mW
mA
mA
mA
mA
50
1270
—
—
—
—
75
—
2
0.5
—
0.125
100
1350
3
±1
50
0.150
µW/mA
nm
nm
dB
µW
ns
—
—
150
—
—
1.1
25
—
10
0.4
1.6
—
750
200
0.5
V
Ω
µA
nA
nm/°C
Modulation Current
IMOD
Slope Efficiency†
Center Wavelength
RMS Spectral Width
Tracking Error
Spontaneous Emission
Rise/Fall Times
SE
λC
∆λ
TE
PTH
tR, tF
Forward Voltage
Input Impedance
Monitor Current
Monitor Dark Current
Wavelength Temperature
Coefficient
VF
R
IMON
ID
—
* Higher and lower powers 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.
‡ VR = reverse voltage.
Agere Systems Inc.
3
Data Sheet
December 2000
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
Characteristic Curve
3.0
2500
2000
2.0
1500
1000
FORWARD LASER
VOLTAGE
1.0
MONITOR DIODE
CURRENT
VOLTAGE
(mV)
VOLTAGE
(mV)
CURRENT
CURRENT(µA)
(µA)
LASER POWER (mW)
L/I CURVE
500
0
0
0
25
50
75
100
125
150
TEMP = 25 oC
LASER CURRENT (mA)
1-884 (C)
Figure 2. Typical D374-Type Laser Module L/I Curve
Qualification Information
The D374-Type Laser Module has completed and passed the following qualification tests and meets the intent of
Telcordia Technologies TR-NWT-000468 for interoffice environments and TA-TSY-000983 for outside plant environments.
Table 3. D374-Type Laser Module Qualification Test Plan
Qualification Test
Mechanical Shock
Conditions
500 G
Sample Size
11
Reference
MIL-STD-883, Method 2002
20 g, 20 Hz—2,000 Hz
11
MIL-STD-883, Method 2007
—
11
MIL-STD-883, Method 2007
Delta T = 100 °C
11
MIL-STD-883, Method 2003
1 kg; 3 times
11
Bellcore 983
Accelerated (biased) Aging
85 °C, 5,000 hrs.
25
Telcordia Technologies 983,
Section 5.18
High-temperature Storage
85 °C, 2,000 hrs.
11
Telcordia Technologies 983
Temperature Cycling
500 cycles
11
Telcordia Technologies 983,
Section 5.20
Cyclic Moisture Resistance
10 cycles
11
Telcordia Technologies 983,
Section 5.23
40 °C, 95% RH,
1344 hrs.
<5,000 ppm water vapor
11
MIL-STD-202, Method 103
11
MIL-STD-883, Method 1018
Flammability
—
—
TR357, Section 4.4.2.5
ESD Threshold
—
6
Telcordia Technologies 983,
Section 5.22
Vibration
Solderability
Thermal Shock
Fiber Pull
Damp Heat
Internal Moisture
4
Agere Systems Inc.
Data Sheet
December 2000
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
Outline Diagram
Dimensions are in inches and (millimeters).
0.300 (7.62)
0.100 (2.54)
TRADEMARK, CODE, LASER SERIAL NUMBER,
AND/OR DATE CODE IN APPROXIMATE AREA SHOWN
0.169 (4.30)
0.29 (7.37)
0.169 (4.30)
1.06 (27.0)
MIN
0.52 (13.21)
39.37 (1000) MIN
(PIGTAIL LENGTH)
0.045 (1.143)
0.20 (5.00)
0.02 (0.50)
0.17
(4.32)
1.925.e
Agere Systems Inc.
5
Data Sheet
December 2000
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
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 Class 3B laser products per IEC * 60825-1:1993. The device has been classified with the FDA under accession number 8720010.
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, laser safety 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
hazardous 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 3B Laser Product IEC-60825M 1993
Max. Output: 10 mW
Wavelength: 1.3 µm
* IEC is a registered trademark of The International Electrotechnical Commission.
6
Agere Systems Inc.
Data Sheet
December 2000
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
Ordering Information
Table 4. Ordering Information
Code
Comcode
Pfiber
Connector
D374-10A
D374-10F
D374-02A
D374-02F
D374-02N
108200601
108226911
108321456
108321464
108320144
1.0 mW
1.0 mW
0.2 mW
0.2 mW
0.2 mW
SC-PC
FC-PC
SC-PC
FC-PC
None
Agere Systems Inc.
7
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
Data Sheet
December 2000
For additional information, contact your Agere Systems Account Manager or the following:
INTERNET:
http://www.agere.com
E-MAIL:
[email protected]
N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286
1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106)
ASIA PACIFIC: Agere Systems Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256
Tel. (65) 778 8833, FAX (65) 777 7495
CHINA:
Agere Systems (Shanghai) Co., Ltd., 33/F Jin Mao Tower, 88 Century Boulevard Pudong, Shanghai 200121 PRC
Tel. (86) 21 50471212, FAX (86) 21 50472266
JAPAN:
Agere Systems Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan
Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700
EUROPE:
Data Requests: DATALINE: Tel. (44) 7000 582 368, FAX (44) 1189 328 148
Technical Inquiries: OPTOELECTRONICS MARKETING: (44) 1344 865 900 (Ascot UK)
Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application.
Copyright © 2001 Agere Systems Inc.
All Rights Reserved
December 2000
DS99-010LWP-1 (Replaces DS99-010LWP)