AGERE D372-20GS

Data Sheet
December 2000
D372-Type Digital Uncooled DFB
Laser Module for 2.5 Gbits/s Applications
Applications
■
SONET OC-48/STM-16 systems
■
Telecommunications
■
Secure digital data systems
Benefits
The low-profile D372-Type Laser Module is ideally suited for
OC-48 SONET and other high-speed digital applications.
Features
■
8-pin package suitable for SONET applications
■
Narrow linewidth, distributed feedback, multiquantum-well (DFB-MQW)1.3 µm laser with singlemode fiber pigtail
■
Choice of wide operating temperature ranges:
–40 °C to +85 °C or 0 °C to +85 °C
■
No TEC required
■
High output power: typical 2.0 mW peak power
coupled into single-mode fiber
■
Hermetically sealed active components
■
Internal back-facet monitor
■
Built-in thermistor and bias T
■
25 Ω input impedance
■
Internal isolator
■
Qualification program: Telcordia Technologies *
TA-983
* Telcordia Technologies is a registered trademark of Telcordia
Technologies, Inc.
■
Easily board mounted
■
Gull wing leads
■
No additional heat sinks required
■
Low-cost alternative to industry-standard, 14-pin
isolated laser module (ILM)
■
Highly efficient DFB-MQW laser structure allows
for lower threshold and drive currents, and reduced
power consumption
Description
The D372-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
applications.
The module includes a narrow linewidth (<1 nm),
DFB-MQW single-mode laser and an InGaAs PIN
photodiode back-facet monitor in a hermetically
sealed package.
This package is optimized for a 25 Ω input impedance and allows for dc biasing through an internal
bias T. A thermistor has been included for feedback
to board-level bias circuitry, if needed.
D372-Type Digital Uncooled DFB
Laser Module for 2.5 Gbits/s Applications
Description (continued)
Data Sheet
December 2000
Table 1. Pin Descriptions
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
photodiode 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 new laser 2000 manufacturing process from the Optoelectronic Products unit of
Agere Systems Inc.. Laser 2000 is a low-cost platform
that targets high-volume manufacturing and tighter
product distributions on all optical subassemblies. This
platform incorporates an advanced optical design that
is produced on one of the highly automated production
lines at the Opotelectronic manufacturing facility. 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
Pin Number
Connection
1
2
3
4
5
6
7
8
Thermistor
Thermistor, package GND
Laser dc bias cathode (–) choke
Photodiode cathode
Photodiode anode
Laser diode anode (+)
Laser RF input cathode (–) 25 Ω
Laser diode anode (+)
1-900.b
Figure 1. D372-Type Digital Uncooled DFB Mini 8-Pin 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
D372-Type Digital Uncooled DFB
Laser Module for 2.5 Gbits/s Applications
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).
Although protection circuitry is designed into the device, take proper precautions to avoid exposure to ESD.
Electrical/Optical Characteristics
Table 2. D372-20 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
Dispersion Penalty
Optical Return Loss
Forward Voltage
Input Impedance
Monitor Current
Monitor Dark Current
Wavelength Temperature Coefficient
Symbol
Test Conditions
Min
Typ
Max
Unit
T
—
–40
—
85
°C
PF
ITH
—
5
2
13
7.5
61
1280
—
30
2
11
—
20
—
—
—
—
40
—
15
50
33
55
154
1335
1
—
mW
mA
mA
mA
SE
λC
∆λ
SMSR
CW, peak
T = 25 °C
T = full range
CW, PF = 2.0 mW, T = 25 °C
CW, IMON = const.,T = full range
CW, PF = 2.0 mW, T = 25 °C
PF = 2.0 mW, CW
PF = 2.0 mW
CW, PF = 2.0 mW
µW/mA
nm
nm
dB
TE
PTH
tR, tF
DP
ORL
VF
R
IMON
ID
—
IMON = constant, CW
I = (0.9) ITH
10%—90% pulse†, T = 25 °C
<60 km, 256 ps/nm
CW
At bias coil
—
VR‡ = 5 V
VR‡ = 5 V
—
—
—
—
—
18
—
—
100
—
—
0.5
—
0.125
—
—
1.1
25
—
10
0.09
1.25
50
0.150
1.0
—
1.6
—
1000
200
0.1
dB
µW
ns
dB
dB
V
Ω
µA
nA
nm/°C
IMOD
* 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.
† Corrected for electrical pulse fall time.
‡ VR = reverse voltage.
Agere Systems Inc.
3
D372-Type Digital Uncooled DFB
Laser Module for 2.5 Gbits/s Applications
Data Sheet
December 2000
Electrical/Optical Characteristics (continued)
Table 3. D372-21 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
Dispersion Penalty
Optical Return Loss
Forward Voltage
Input Impedance
Monitor Current
Monitor Dark Current
Wavelength Temperature Coefficient
Symbol
Test Conditions
Min
Typ
Max
Unit
T
—
0
—
85
°C
PF
ITH
CW, peak
T = 25 °C
T = full range
CW, PF = 2.0 mW, T = 25 °C
CW, IMON = const.,T = full range
CW, PF = 2.0 mW, T = 25 °C
PF = 2.0 mW, CW
PF = 2.0 mW
CW, PF = 2.0 mW
(See Reliability Information, below)
IMON = constant, CW
I = (0.9) ITH
10%—90% pulse†, T = 25 °C
<60 km, 256 ps/nm
(See Reliability Information, below)
CW
At bias coil
—
‡
VR = 5 V
VR‡ = 5 V
—
—
5
2
13
7.5
61
1280
—
30
2
11
—
20
—
—
—
—
—
—
15
50
33
55
154
1335
1
—
mW
mA
mA
mA
µW/mA
nm
nm
dB
—
—
—
—
0.5
—
0.125
—
1.25
50
0.150
1.0
dB
µW
ns
dB
18
—
—
100
—
—
—
1.1
25
—
10
0.09
—
1.6
—
1000
200
0.1
dB
V
Ω
µA
nA
nm/°C
IMOD
SE
λC
∆λ
SMSR
TE
PTH
tR, tF
DP
ORL
VF
R
IMON
ID
—
* 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.
† Corrected for electrical pulse fall time.
‡ VR = reverse voltage.
Reliability Information
Note, the D372-21 product does not undergo any routine dynamic testing.
A 2000-piece sample was tested at 2.5 Gbits/s for SMSR at 0 °C. In that sample, 99.5% of the devices had SMSR
values greater than 30 dB. Within the failures, 90% were for inability to achieve an extinction ration of 10 dB or
more.
Surveillance samples are tested to verify that the failure rate has not changed,
4
Agere Systems Inc.
Data Sheet
December 2000
D372-Type Digital Uncooled DFB
Laser Module for 2.5 Gbits/s Applications
Qualification Information
The D372-type laser module is scheduled to complete 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 4. D372-Type Laser Module Qualification Test Plan
Qualification Test
Conditions
Sample Size
Reference
500 G
11
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
Telcordia Technologies
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.
11
MIL-STD-202
Method 103
<5,000 ppm water vapor
11
MIL-STD-883
Method 1018
Flammability
—
—
TR357
Section 4.4.2.5
ESD Threshold
—
6
Telcordia Technologies
983, Section 5.22
Mechanical Shock
Vibration
Solderability
Thermal Shock
Fiber Pull
Damp Heat
Internal Moisture
Agere Systems Inc.
5
D372-Type Digital Uncooled DFB
Laser Module for 2.5 Gbits/s Applications
Data Sheet
December 2000
Outline Diagram
Dimensions are in inches and (millimeters).Laser Safety Information
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
6
Agere Systems Inc.
Data Sheet
December 2000
D372-Type Digital Uncooled DFB
Laser Module for 2.5 Gbits/s Applications
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 or 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
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.
Agere Systems Inc.
7
D372-Type Digital Uncooled DFB
Laser Module for 2.5 Gbits/s Applications
Data Sheet
December 2000
Ordering Information
Table 5. D372-20 Ordering Information
Device Code*
Comcode
Pfiber
Connector
D372-20AS
D372-20BS
D372-20FS
D372-20GS
108088048
108224973
108130469
108332032
2.0 mW
2.0 mW
2.0 mW
2.0 mW
SC-PC
SC-APC
FC-PC
FC-APC
* Trailing S in code indicates that the module contains an isolator.
Table 6. D372-21 Type Ordering Information
Device Code*
Comcode
Pfiber
Connector
D372-21AS
D372-21BS
D372-21FS
D372-21GS
D372-21SS
108898073
108898081
108898099
108898107
108898114
2.0 mW
2.0 mW
2.0 mW
2.0 mW
2.0 mW
SC-PC
SC-APC
FC-PC
FC-APC
FC-APC
* Trailing S in code indicates that the module contains an isolator.
For additional information, contact your Agere Systems Account Manager or the following:
INTERNET:
http://www.agere.com
E-MAIL:
docmaster@micro.lucent.com
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
DS01-020OPTO (Replaces DS99-023LWP)