STL81004N - Infineon Technologies

Data Sheet 1 2002-01-01

Low Power

1550 nm FP Laser

STL81004x

STL81005x

Fiber Optics

Features

• Designed for applications in fiber optic networks

• Laser Diode with Multi-Quantum Well structure

• Suitable for bit rates up to 1 Gbit/s

• Ternary Photodiode at rear mirror for monitoring

and control of radiant power

• Hermetically sealed subcomponents,

similar to TO 46

• SM pigtail with optional connector

STL81004x

STL81005x

Pin Configuration and Flange

Data Sheet 2 2002-01-01

Pin Configuration and Flange

Figure 1 Transmitter

Available Pinnings with and without Flange

Type Transmitter Flange

STL81004x 1 without

STL81005x 1 with

2.54 mm

Transmitter (bottom view)

Pinning 1

STL81004x

STL81005x

Description

Data Sheet 3 2002-01-01

Description

Differences between a Fabry-Perot and a DFB Laserdiode

A conventional laser consists of an amplifying medium and two end mirrors. The cavity

is longer than one wavelength, and a standing wave is created. The number n of half

wavelengths λ is . If L >> λ then we speak of a Fabry-Perot Laser because the

laserdiode emits multi-longitudinal modes. Typically the laserdiode is 250 µm long. For

λ = 1310 nm/1550 nm n is about 350. Therefore for many neighboring wavelengths the

“standing wavelength” condition specified above is fulfilled. For a DFB-Laser a special

grating acts as a distributed filter allowing only one of the cavity’s longitudinal modes to

propagate. This can be described with a reduced oscillator length which is in the range

of λ. For such a reduced oscillator length the standing wavelength condition will be

fulfilled for n ≈ 2 what means for only one wavelength.

Figure 2 Fabry-Perot Laserdiode

---

×=

Wavelength

Intensity

0012345

STL81004x

STL81005x

Description

Data Sheet 4 2002-01-01

Figure 3 DFB Laserdiode

Regulatory Compliance

Feature Standard Comments

Electrostatic

Discharge (ESD) to the

Electrical Pins

MIL-STD 883D

Method 3015.7

Class 1 (<500 V)

Wavelength

Intensity

0012345

STL81004x

STL81005x

Technical Data

Data Sheet 5 2002-01-01

Technical Data

The electro-optical characteristics described in the following tables are only valid for use

within the specified maximum ratings or under the recommended operating conditions.

Absolute Maximum Ratings

Parameter Symbol Limit Values Unit

min. max.

Module

Operating temperature range at case TC–40 85 °C

Storage temperature range Tstg –40 85

Soldering temperature ( tmax = 10 s,

2 mm distance from bottom edge of case)

TS260

Laser Diode

Direct forward current IF max 120 mA

Radiant power CW PF, rad 1mW

Reverse Voltage VR2V

Monitor Diode

Reverse Voltage VR10 V

Forward Current IF2mA

Transmitter Electro-Optical Characteristics

Parameter Symbol Limit Values Unit

min. typ. max.

Optical output power

(maximum)

PF, max 0.4 mW

Emission wavelength center of

range, PF = 0.5 PF, max.

λtrans 1510 1590 nm

Spectral width (RMS) σλ5

Temperature coefficient of

wavelength TC 0.5 nm/K

Threshold current

(whole temperature range)

Ith 255mA

Forward voltage, PF = 0.5 PF, max. VF1.5 V

Radiant power at Ith Pth 10 µW

STL81004x

STL81005x

Technical Data

Data Sheet 6 2002-01-01

Slope efficiency (–40...85°C) η860mW/A

Variation of 1st derivative of P/I

(0.1 to 0.4 mW)

Svar –30 30 %

Differential series resistance RS8Ω

Rise time (10%–90%) tr100 200 ps

Fall time (10%–90%) tf270 500

Monitor Diode Electro-Optical Characteristics

Parameter Symbol Limit Values Unit

min. max.

Dark current, VR = 5 V, PF = 0, T = Tmax IR500 nA

Photocurrent, VR = 5 V, PF = 0.5 PF, max IP100 1000 µA

Capacitance, VR = 5 V, f = 1 MHz C510 pF

Tracking error1), VR = 5 V

1) The tracking error TE is the maximum deviation of PF at constant current Imon over a specified temperature

range and relative to the reference point: Imon, ref = Imon (T = 25°C, PF = 0.5 PF, max.). Thus, TE is given by:

TE –1 1 dB

End of Life Time Characteristics

Parameter Symbol Limit Values Unit

min. max.

Threshold current at T = Tmax Ith 60 mA

Current above threshold, over full

temperature range, at Imon, ref = Imon

(T = 25°C, PF = 0.5 PF, max., BOL)

∆IF770

Tracking Error TE –1.5 1.5 dB

Monitor Dark Current, VR = 2 V, T = Tmax IR1µA

Transmitter Electro-Optical Characteristics (cont’d)

Parameter Symbol Limit Values Unit

min. typ. max.

TE dB[]10 PFTC

[]

PF25°C[]

-------------------------

log×=

STL81004x

STL81005x

Fiber Data

Data Sheet 7 2002-01-01

Fiber Data

The mechanical fiber characteristics are described in the following table.

Fiber Characteristics

Parameter Limit Values Unit

min. typ. max.

Mode Field Diameter 8 9 10 µm

Cladding Diameter 123 125 127

Mode Field/Cladding Concentricity Error 1

Cladding Non-circularity 2 %

Mode Field Non-circularity 6

Cut off Wavelength 1270 nm

Jacket Diameter 0.8 1 mm

Bending Radius 30

Tensile Strength Fiber Case 5 N

Length 0.8 1.2 m

STL81004x

STL81005x

Eye Safety

Data Sheet 8 2002-01-01

Eye Safety

Ensure to avoid exposure of human eyes to high power laser diode emitted laser beams.

Especially do not look directly into the laser diode or the collimated laser beam when the

diode is activated.

Class 3B Laser Product According to IEC 60825-1

Figure 4 Required Labels

Class IIIb Laser Product According to FDA Regulations Complies with

21 CFR 1040.10 and 1040.11

Figure 5 Required Label

Laser Data

Wavelength 1550 nm

Maximum total output power less than 50 mW

Beam divergence (1/e2)10°

INVISIBLE LASER RADIATION

AVOID EXPOSURE TO BEAM

Class 3B Laser Product

SEMICONDUCTOR LASER

INVISIBLE RADIATION

CLASS IIIb LASER PRODUCT

LASER RADIATION - AVOID

DIRECT EXPOSURE TO BEAM

STL81004x

STL81005x

Package Outlines

Data Sheet 9 2002-01-01

Package Outlines

Figure 6

Connector Options

Model Connector Type

STL81004G

STL81005G

SM FC/PC

STL81004N

STL81005N

SM SC/PC 0°

STL81004Z

STL81005Z

without connector

Dimensions in mm

STL81005G

Edition 2002-01-01

Published by Infineon Technologies AG,

St.-Martin-Strasse 53,

D-81541 München, Germany

Attention please!

The information herein is given to describe certain components and shall not be considered as warranted

characteristics.

Terms of delivery and rights to technical change reserved.

We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding

circuits, descriptions and charts stated herein.

Infineon Technologies is an approved CECC manufacturer.

Information

For further information on technology, delivery terms and conditions and prices please contact your nearest

Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide.

Warnings

Due to technical requirements components may contain dangerous substances. For information on the types in

question please contact your nearest Infineon Technologies Office.

Infineon Technologies Components may only be used in life-support devices or systems with the express written

approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure

of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life-support

devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain

and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may

be endangered.

For questions on technology, delivery and prices please contact the Infineon

Technologies Offices in Germany or the Infineon Technologies Companies and

Representatives worldwide: see our webpage at http://www.infineon.com.

STL81004x

STL81005x

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