T92-Type 10 Gbits/s 1300 nm
Uncooled DFB Laser Transmitter

Advance Data Sheet

March 2001

Offering SONET/SDH compatibility, the T92-Type Uncooled
Laser Transmitter is manufactured in a 24-pin DIP assembly
with a single-mode fiber pigtail.

Features

Multisource compliant

Data rates to 10 Gbits/s

SONET and ITU-T compliant at OC-192 and
STM-64 (see footnote 7 on page 4)

Uncooled, field-proven InGaAsP MQW laser

1300 nm DFB

Clocked or nonclocked operation with single-ended
or differential inputs

ac-coupled 500 mVp-p--1000 mVp-p single-

ended data and clock inputs

Operation from single 5.2 V or +5.0 V power sup-
ply

Low profile, 24-pin PWB assembly

Automatic optical power control

Wide operating case temperature range: 0 °C to
70 °C

Laser bias monitor output

Normalized laser back-facet monitor output

Laser degrade alarm

Clock-select input (next generation)

Transmitter disable input

SC, FC-PC, and LC optical connector options

Applications

Telecommunications:

-- SONET/SDH
-- Subscriber loop
-- Metropolitan area networks

High-speed data communications

Description

The T92-Type 10 Gbits/s laser transmitters are
designed for use in transmission systems and high-
speed data communication applications. The trans-
mitter operates at the SONET OC-192 rate, as well
as, the ITU-T SDH rate of STM-64.

The transmitters meet all present

Telcordia Technolo-

gies

* GR-253-CORE requirements and the ITU-T

G.691 recommendations (see footnote 7, p.4). The
transmitters are also ideally suited for extended dis-
tance data and networking applications.

Manufactured in a 24-pin DIP assembly, the transmit-
ter uses an hermetic MQW isolated 1300 nm DFB
laser, an InGaAs PIN photodiode back-facet monitor
and a GaAs laser driver IC. The transmitter requires
a single power supply (5.2 V or +5.0 V). Clocked
operation can be enabled for those applications
where jitter is critical.

Pin information is listed in Table 1.

Telcordia Technologies

is a trademark of Telcordia Technologies,

Inc.

T92-Type 10 Gbits/s 1300 nm

Advance Data Sheet

Uncooled DFB Laser Transmitter

March 2001

Agere Systems Inc.

Description

(continued)

Transmitter Processing

The transmitter can withstand normal wave soldering
processes. The complete transmitter module is not her-
metically sealed; therefore, it should not be immersed
in or sprayed with any cleaning solution or solvents.
The process cap and fiber pigtail jacket can deform at
temperatures greater than 85 °C. The transmitter pins
can be wave-soldered at a maximum temperature of
250 °C for 10 seconds.

Installation Considerations

Although the transmitter has been designed with rug-
gedness in mind, care should be used during handling.
The optical connector should be kept free from dust,
and the process cap should be kept in place as a dust
cover when the device is not connected to a cable. If
contamination is present on the optical connector, the
use of canned air with an extension tube should
remove any debris. Other cleaning procedures are
identified in the

Cleaning Fiber-Optic Assemblies

Tech-

nical Note (TN95-010LWP).

Laser Degrade-mode Alarm

An output of the transmitter that indicates when the
laser bias has reached its end-of-life condition. The
transmitter will still function, but may not meet all speci-
fications. The transmitter should be replaced when this
alarm is active (active low). Specifically, this alarm indi-
cates that the bias of the laser has changed more than
50% from its original value.

Back-facet Monitor Output

This is an analog output that indicates whether the
transmitter has the correct optically generated back-
facet current. It may be used for alarm purposes. It is
referenced to V

. Under normal operating conditions,

this monitor will output a voltage that is nominally
500 mV above V

. When the optical output power of

the transmitter increases or decreases, this voltage will
move proportionately.

Bias Monitor Output

This is an optional analog output voltage that indicates
the bias current being supplied to the laser. It is refer-
enced to V

. The conversion for this monitor output is

20 mV for every 1 mA of bias current to the laser. For
example, a 400 mV output above V

would indicate

20 mA of bias current to the laser.

Table 1. Pin Descriptions

1. Laser back-facet function is a customer-use option that is not

required for normal operations of the transmitter and is normally
used during manufacture and for diagnostics.

2. Laser temperature (°C) = (V

TEMP

0.5 V)/0.01 V, where V

TEMP

the temperature monitor voltage.

3. This pin can be tied to ground.
4. For single-ended operation, data signal must be on pin 16, and

DATA

(pin 18) must 50

terminated to ground; for single-ended

clocked operation, clock signal must be on pin 20, and

CLOCK

(pin

22) must be 50

terminated to ground.

Pin Number

Name

Back-facet Monitor

Bias Monitor

Tx Enable

Clock Select

Ground

Temperature Monitor

Laser Degrade Alarm

NUC

Ground

DATA

Ground

DATA

Ground

CLOCK

Ground

CLOCK

Ground

Advance Data Sheet

T92-Type 10 Gbits/s 1300 nm

March 2001

Uncooled DFB Laser Transmitter

Agere Systems Inc.

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.

Characteristics

(Minimum and maximum values specified over operating case temperature range at 50% duty cycle data signal.
Typical values are measured at room temperature unless otherwise noted.)

1. With V

connected to 5.2 V, V

must be at 0 V; With V

connected to +5.0V, V

must be at 0 V.

2. Inputs are ac-coupled into an equivalent input impedance of 50

3. Single-ended or differential operation may be used. If the inputs are driven single-ended, the unused inputs (

Clock

and

Data

) must be 50

ter-

minated to ground.

4. Clocked operation is normally enabled and only requires an external voltage to disable. For nonclocked operation, pin 5 must be tied to V

5. With clocked operation, the optical output changes state with the rising edge of the input clock signal. The skew is measured with the rising

edge of the clock centered in the middle of the data eye.

6. The transmitter is normally enabled and only requires an external voltage to disable.
7. This alarm will go active when the bias current to the laser has increased 50% or more from its beginning-of-life (BOL) value.
8. This voltage is measured from Pin 3 to V

and is converted to laser bias current with the ratio of 20 mV/mA.

9. This voltage is measured from Pin 2 to V

Parameter

Symbol

Min

Max

Unit

Supply Voltage

5.5

Operating Case Temperature Range

°C

Storage Case Temperature Range

stg

°C

Lead Soldering Temperature/Time

250/10

°C/s

Relative Humidity (noncondensing)

Minimum Fiber-Bend Radius

1.00 (25.4)

in. (mm)

Table 2. Electrical Characteristics

Parameter

Symbol

Min

Typ

Max

Unit

dc Power Supply Voltage

5.5/+4.75

5.2/+5.0

4.9/+5.25

dc Power Supply Current Drain

250

400

Input Data/Clock Voltage:

2, 3

Single-ended Input

500

700

1000

mVp-p

Clocked/Nonclocked Select Voltage:

Clocked Operation
Nonclocked Operation

SEL_CLK

SEL CLK

2.0

--
--

+ 0.8

V
V

Clock/Data Input Impedance

Clock/Data RF Return Loss (50 kHz to 10 Ghz)

S11

Clock/Data Input Skew

SKEW

Transmitter Disable Voltage

DIS

2.0

Transmitter Enable Voltage

+ 0.8

Degrade Mode Alarm VoltageNormal

NORMAL

2.0

Degrade Mode Alarm VoltageAlarmed

ALARMED

+ 0.8

Laser Bias Voltage

500

2400

Back-facet Monitor Voltage (50% duty cycle)

460

500

540

T92-Type 10 Gbits/s 1300 nm

Advance Data Sheet

Uncooled DFB Laser Transmitter

March 2001

Agere Systems Inc.

Characteristics

(continued)

1. Output power definitions and measurements per proposals to the ITU-T Recommendation G.691.
2. Full spectral width measured 20 dB down from the maximum of the central wavelength peak under fully modulated conditions.
3. Ratio of the peak output power in the dominant longitudinal mode to the power in the most significant side mode under fully modulated condi-

tions.

4. Ratio of logic 1 output power to logic 0 output under fully modulated conditions.
5. GR-253-CORE,

Synchronous Optical Network (SONET) Transport Systems: Common Generic Criteria

6. ITU-T Recommendation G.691,

Optical Interfaces for Equipment and Systems Relating to the Synchronous Digital Hierarchy

7. The 10 Gbits/s mask has not been currently agreed to by the standards committee. Proposal is to use the 2.5 Gbits/s SONET eye mask test

scaled to 10 Gbits/s. The inner mask will be met, however, the outer mask will not be met.

Table 3. Optical Characteristics

Parameter

Symbol

Min

Typ

Max

Unit

Average Power Output, T923xFAA

6 2 1

dBm

Center Wavelength Range, T923xFAA

1290

1330

Spectral Width

Wavelength Shift with Temperature

0.1

nm/°C

Side-mode Suppression Ratio

SMSR

Dispersion Penalty (D = 12 km, max.)

Extinction Ratio

Eye Mask of Optical Output

5, 6, 7

See Note 7.

Advance Data Sheet

T92-Type 10 Gbits/s 1300 nm

March 2001

Uncooled DFB Laser Transmitter

Agere Systems Inc.

Outline Drawings

Dimensions are in inches and (millimeters).

1.450

(36.83)

2.015

(51.18)

1.055

(26.80)

0.260

(6.60)

0.392

(9.96)

0.125

(3.18)

0.100

(2.54)

0.018

(0.46)

0.015

(0.38)

1.100

(27.94)

0.720

(18.29)

1.000

(25.40)

1-1256(F)

Outline Drawings

Dimensions are in inches and (millimeters).

1.450

(36.83)

2.015

(51.18)

1.055

(26.80)

0.260

(6.60)

0.392

(9.96)

0.125

(3.18)

0.100

(2.54)

0.018

(0.46)

0.015

(0.38)

1.100

(27.94)

0.720

(18.29)

1.000

(25.40)

1-1256(F)

T92-Type 10 Gbits/s 1300 nm

Advance Data Sheet

Uncooled DFB Laser Transmitter

March 2001

Agere Systems Inc.

Qualification and Reliability

To help ensure high product reliability and customer satisfaction, Agere Systems is committed to an intensive qual-
ity program that starts in the design phase and proceeds through the manufacturing process. Optoelectronics mod-
ules are qualified to Agere Systems internal standards using MIL-STD-883 test methods and procedures and using
sampling techniques consistent with

Telcordia Technologies

requirements. This qualification program fully meets

the intent of Bellcore reliability practices TR-NWT-000468 and TA-TSY-000983. In addition, the Agere Systems
Technologies Microelectronics Group Optoelectronics design, development, and manufacturing facility has been
certified to be in full compliance with the latest

ISO

* 9001 Quality System Standards.

Laser Safety Information

Class I Laser Product

All versions of the T92-type transmitters are classified as Class I laser products per FDA/CDRH, 21 CFR 1040
Laser Safety requirements. The transmitters are classified with the FDA under accession number 8720009. All ver-
sions are classified as Class I laser products per

IEC

60825-1:1993.

This product complies with 21 CFR 1040.10 and 1040.11.
Wavelength = 1.5

Maximum power = 10 mW

Connector Options

The standard optical fiber pigtail is 8

m core single-mode fiber having a 0.036 in. (914 mm) diameter tight-buffered

outer-jacket. The standard length is 39 in. ± 4 in. (1 m ± 10 cm) and can be terminated with an SC, FC-PC, or LC
optical connector.

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.

NOTICE

Unterminated optical connectors can emit laser radiation.

Do not view with optical instruments.

ISO

is a registered trademark of The International Organization for Standardization.

IEC

is a registered trademark of The International Electrotechnical Commission.

Advance Data Sheet

T92-Type 10 Gbits/s 1300 nm

March 2001

Uncooled DFB Laser Transmitter

Agere Systems Inc.

Ordering Information

Ordering Code Definitions

Table 4. Ordering Information

Product Code

Connector

Comcode

T923CFAA

108749748

T923FFAA

FC-PC

108749755

T923WFAA

108749763

Table 5. Related Product Information

Product Code

Description

Document Number

R192-Type 10 Gbits/s

Optical Receiver

10 Gbits/s

Optical Receiver

DS00-261OPTO

ORDER CODE:

T923

3 = 1.3

m DFB

Optical Connector:

Customer Options:

Typical Power:

C = SC
F = FC-PC
W = LC

Laser Type:

F = 2 dBm

AA--ZZ

T92-Type 10 Gbits/s 1300 nm

Advance Data Sheet

Uncooled DFB Laser Transmitter

March 2001

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. No rights
under any patent accompany the sale of any such product(s) or information.

March 2001
DS01-085OPTO

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