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Электронный компонент: D374

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D374-Type Digital Uncooled 2.5 Gbits/s
Laser Module
Data Sheet
December 2000
The low-profile D374-Type Laser Module is ideally suited for
short- and long-reach SONET and other high-speed digital
applications.
Features
s
2.5 Gbits/s operation
s
Eight-pin package suitable for SONET/SDH appli-
cations
s
MQW F-P 1.3
m laser with single-mode fiber pig-
tail
s
Wide operating temperature range:
40
C to +85
C
s
No TEC required
s
25
input impedance
s
High output power: typically 1.0 mW peak power
coupled into single-mode fiber; 0.2 mW versions
available
s
Hermetically sealed active components
s
Internal back-facet monitor
s
Qualification program:
Telcordia Technologies
* TA-
983
*
Telcordia Technologies
is a registered trademark of Telcordia
Technologies, Inc.
Applications
s
Short-reach SONET OC-48 systems
s
SDH STM-16 systems
s
Telecommunications
s
Secure digital data systems
Benefits
s
Easily board mounted
s
Gull wing leads
s
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 configu-
ration (see Figure 1 and/or Table 1) and is ideal for
short-reach and other high-speed digital applica-
tions. It is developed specifically for 2.5 Gbits/s appli-
cations.
The module includes a multiquantum-well Fabry-
Perot (MQW F-P) laser and an InGaAs PIN photo-
diode back-facet monitor in an epoxy-free, hermeti-
cally sealed package.
Data Sheet
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
December 2000
2
2
Agere Systems Inc.
Description
(continued)
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 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 new Laser 2000 manufac-
turing process developed by the Optoelectronic unit of
Agere Systems Inc. Laser 2000 is a low-cost platform
that targets high-volume manufacturing and tight prod-
uct distributions on all optical subassemblies. This plat-
form incorporates an advanced optical design that is
produced on a highly automated production 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.
Table 1. Pin Descriptions
Pin Number
Connection
1
NC/reserved
2
Case ground
3
NC/reserved
4
PD cathode
5
PD anode
6
Laser diode anode (+)
7
Laser RF input cathode (), 25
8
Laser diode anode (+)
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 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.
* Rating varies with temperature.
Parameter
Symbol
Min
Max
Unit
Maximum Peak Laser Drive Current or
Maximum Fiber Power*
I
OP
P
MAX
--
--
150
10
mA
mW
Peak Reverse Laser Voltage:
Laser
Monitor
V
RL
V
RD
--
--
2
20
V
V
Monitor Forward Current
I
FD
--
2
mA
Operating Case Temperature Range
T
C
40
85
C
Storage Case Temperature Range
T
stg
40
85
C
Lead Soldering Temperature/Time
--
--
260/10
C/s
Relative Humidity (noncondensing)
RH
--
85
%
5
6
8
7
4
3
1
2
1-900
Data Sheet
December 2000
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
3
Agere Systems Inc.
Handling Precautions
Caution: This device is susceptible to damage as a result of electrostatic discharge (ESD). Take proper pre-
cautions 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
* 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.
V
R
= reverse voltage.
Table 2. Electrical/Optical Characteristics
(over operating temperature range unless otherwise noted)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Operating Temperature
Range
T
--
40
--
85
C
Optical Output Power*
P
F
CW, nominal
--
1
--
mW
Threshold Current
I
TH
T = 25
C
T = full range
4.5
1
9
--
15
45
mA
mA
Modulation Current
I
MOD
CW, P
F
= 1.0 mW, T = 25
C
CW, I
MON
= constant,
T = full range
10
8
15
--
20
35
mA
mA
Slope Efficiency
SE
CW, P
F
= 1.0 mW, T = 25
C
50
75
100
W/mA
Center Wavelength
C
P
F
= 1.0 mW, CW
1270
--
1350
nm
RMS Spectral Width
P
F
= 1.0 mW, 155 Mbits/s
--
2
3
nm
Tracking Error
TE
I
MON
= constant, CW
--
0.5
1
dB
Spontaneous Emission
P
TH
I = (0.9) I
TH
--
--
50
W
Rise/Fall Times
t
R
, t
F
10%--90% pulse
T = 25
C
--
0.125
0.150
ns
Forward Voltage
V
F
At bias coil
--
1.1
1.6
V
Input Impedance
R
--
--
25
--
Monitor Current
I
MON
V
R
= 5 V
150
--
750
A
Monitor Dark Current
I
D
V
R
= 5 V
--
10
200
nA
Wavelength Temperature
Coefficient
--
--
--
0.4
0.5
nm/
C
Data Sheet
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
December 2000
4
Agere Systems Inc.
Characteristic Curve
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 environ-
ments.
Table 3. D374-Type Laser Module Qualification Test Plan
Qualification Test
Conditions
Sample Size
Reference
Mechanical Shock
500 G
11
MIL-STD-883, Method 2002
Vibration
20 g, 20 Hz--2,000 Hz
11
MIL-STD-883, Method 2007
Solderability
--
11
MIL-STD-883, Method 2007
Thermal Shock
Delta T = 100
C
11
MIL-STD-883, Method 2003
Fiber Pull
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
Damp Heat
40
C, 95% RH,
1344 hrs.
11
MIL-STD-202, Method 103
Internal Moisture
<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
0
25
50
150
0
1.0
3.0
TEMP = 25
o
C
75
100
125
2.0
VOLTAGE (mV)
CURRENT (A)
0
500
1000
1500
2000
2500
LASER CURRENT (mA)
FORWARD LASER
VOLTAGE
LASER POWER (mW)
MONITOR DIODE
CURRENT
L/I CURVE
V
O
L
T
A
GE (mV)
CURRENT (
A)
1-884 (C)
Data Sheet
December 2000
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
5
Agere Systems Inc.
Outline Diagram
Dimensions are in inches and (millimeters).
39.37 (1000) MIN
(PIGTAIL LENGTH)
0.52 (13.21)
1.06 (27.0)
MIN
0.29 (7.37)
TRADEMARK, CODE, LASER SERIAL NUMBER,
AND/OR DATE CODE IN APPROXIMATE AREA SHOWN
0.300 (7.62)
0.100 (2.54)
0.169 (4.30)
0.169 (4.30)
0.20 (5.00)
0.02 (0.50)
0.045 (1.143)
0.17
(4.32)
1.925.e
Data Sheet
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
December 2000
6
Agere Systems Inc.
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 classi-
fied with the FDA under accession number 8720010.
This product complies with 21 CFR 1040.10 and 1040.11.
8.3
m single-mode pigtail with optional connector.
Wavelength = 1.3
m.
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.
*
IEC
is a registered trademark of The International Electrotechnical Commission.
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
m
Data Sheet
December 2000
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
7
Agere Systems Inc.
Ordering Information
Table 4. Ordering Information
Code
Comcode
Pfiber
Connector
D374-10A
108200601
1.0 mW
SC-PC
D374-10F
108226911
1.0 mW
FC-PC
D374-02A
108321456
0.2 mW
SC-PC
D374-02F
108321464
0.2 mW
FC-PC
D374-02N
108320144
0.2 mW
None
Data Sheet
D374-Type Digital Uncooled 2.5 Gbits/s Laser Module
December 2000
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
DS99-010LWP-1 (Replaces DS99-010LWP)