LSC2110-622-SA - Agilent / Hewlett-Packard

468

Laser Safety Warning

This device is a Class IIIb (3b) Laser Product. It may emit invisible laser radiation if operated with the fiber pigtail disconnected. To avoid

possible eye damage do not look into an unconnected fiber pigtail during laser operation. Do not exceed specified operating limits.

Features

• 2.5 Milliwatt Peak Optical

Power Output

• Center Wavelength between

1294 nm and 1329 nm

• Narrow Linewidth: <1.7 nm

• Modulation Bandwidth:

>1 Ghz

• Wide Operating Tempera-

ture Range: -40°C to +85°C

• Industry Standard Hermetic

14 Pin Dual-In-Line Package

Applications

• 622 Mbit/s SONET/SDH

• Local Area and Metropolitan

Area Networks

• Point-to-Point Data

Communications

• Fiber Optic Sensors

• Cable Television

• Military Communications

and Control Systems

• Instrumentation

2.5 mW 14 Pin DIL Cooled Laser

Module

Technical Data

LSC2110-622

Description

LSC2110-622 laser modules are

highly reliable fiber optic light

sources operating in the 1300

nanometer band. The internal

semiconductor lasers are based

upon InGaAsP buried hetero-

structure (BH) technology and

fabricated by the Metal Organic

Vapor Phase Epitaxy (MOVPE)

process, resulting in long

lifetimes and modest threshold

currents.

LSC2110-622 package includes a

photodiode for monitoring the

laser output, a thermistor for

monitoring the laser submodule

temperature and a Peltier effect

thermoelectric cooler (TEC). A

heatsink mounting flange is

incorporated into the industry

standard 14 pin package.

The LSC2110-622 has been

specifically designed to meet the

requirements of STM4.1 and

SONET OC12 LR1 applications.

5962-9398E (1/95)

469

Pin Connections

Top View

Mechanical Outline

TEC 14 TEC CATHODE (-ve SUPPLY TO COOL)

13 NOT CONNECTED

12 THERMISTOR

11 THERMISTOR

10 LASER ANODE (+ve SUPPLY) CASE GROUND

9 LASER CATHODE (-ve SUPPLY)

8 MONITOR PHOTODIODE ANODE (-ve SUPPLY)

TEC ANODE (+ve SUPPLY TO COOL) 1

NOT CONNECTED 2

NOT CONNECTED 3

RESERVED - DO NOT CONNECT 4

CASE GROUND 5

RESERVED - DO NOT CONNECT 6

MONITOR PHOTODIODE CATHODE (+ve SUPPLY) 7

BFIBER PIGTAIL

∅U

CKL

∅N

∅H

DIM. MIN. MAX.

∅H

20.68

0.90

12.55

8.51

6.10

7.62 NOM.

2.54 NOM.

0.457 NOM.

7.01

20.98

1.10

13.00

9.60

6.60

7.21

ALL DIMENSIONS IN MILLIMETERS

DIM. MIN. MAX.

∅N

∅U

19.05 NOM.

25.10

30.00 NOM.

–

1000

5.80

6.00 NOM.

–

3.17 NOM.

25.70

4.20

–

6.20

6.00

470

LSC2110-622 Typical Operating Characteristics

RELATIVE POWER

WAVELENGTH (nm)

1315

100

1300 1305

1310

SPECTRAL CONTENT

OUTPUT POWER (mW)

FORWARD CURRENT (mA)

1.5

2.5

20 40

1.0

OUTPUT POWER

vs. FORWARD CURRENT

2.0

0.5

FORWARD VOLTAGE (V)

FORWARD CURRENT (mA)

1.0

1.2

302010 40 70

0.5

LASER FORWARD VOLTAGE

vs. FORWARD CURRENT

MONITOR DIODE PHOTOCURRENT (µA)

OUTPUT POWER (mW)

4.0

500

800

1.5 2.5

300

MONITOR PHOTOCURRENT

vs. OUTPUT POWER

600

100

00.5 1.0 2.0 3.0 3.5

700

400

200

471

Absolute Maximum Ratings

Absolute maximum limits mean that no catastrophic damage will occur if the product is subjected to these ratings for short periods, provided

each limiting parameter is in isolation and all other parameters have values within the performance specification. It should not be assumed that

limiting values of more than one parameter can be applied to the product at the same time.

Limits

Parameter Symbol Conditions Min. Max. Units

Laser Forward Current If DC - 150 mA

Laser Reverse Current Ir DC - 100 µA

Laser Reverse Voltage Vlr DC - 2 V

Photodiode Reverse Voltage Vr DC - 10 V

Photodiode Forward Current Ipf DC - 1 mA

Operating Temperature Tc Pf min. -40 +85 °C

Storage Temperature Ts -40 +85 °C

Relative Humidity RH 0.0 non- %RH

condensing

Fiber Pull Strength - 10 N

Mechanical Shock Mil Std 883, Method 2002,

Condition A

Vibration Mil Std 883, Method 2007,

Condition A

Performance Specification

Parameter Symbol Test Conditions Min. Max. Units

LASER Tc = -40°C to +85°C, ∆T = +65°C (heating)

∆T = -40°C (cooling), CW, Pf = 2.5 mW

unless otherwise stated

Threshold Current Ith 5 25 mA

Peak Optical Pf 2.5 - mW

Output Power Pf 4 - dBm

Optical Output Pth Pth = Pf @ Ith -2 mA - 50 µW

Power

Slope Efficiency ηTc = 25°C, Rt = 10 kΩ0.05 0.12 mW/mA

Forward Voltage Vf - 1.8 V

Differential Rd dV/dI - 10 Ω

Resistance

Centre Wavelength λc Mod @ 622 Mbit/s, 50% duty cycle, 1294 1329 nm

ORL 20 dB

λc Change with ∆λc/∆T From Tc = 65°C to 85°C, ∆T = -40°C - 0.5 nm/°C

Temperature

Spectral Width ∆λ Modulated as for λc, 1 x σ, RMS - 1.7 nm

Rise Time τr 10% to 90%: Ith to Pf = 2.5 mW - 0.4 ns

Fall Time τf 90% to 10%: Pf = 2.5 mW to Ith - 0.4 ns

Small Signal Bw ±3 dB 1.0 - GHz

Freq. Response

472

Performance Specifications (cont’d.)

Ratings

Parameter Symbol Test Conditions Min. Max. Units

MONITOR Tc = -40°C to +85°C, ∆T = +65°C (heating)

PHOTODIODE ∆T = -40°C (cooling), CW, Pf = 2.5 mW

Vr = 5 V (Note 1), unless otherwise specified

Photocurrent Im 0.1 2.0 mA

Responsivity R 0.04 0.8 A/W

Dark Current Id Pf = 0 mW, Tc = ~25°C, Rt = 10 kΩ-20nA

Tracking Error ∆R Im = Im @ (Pf = 2.5 mW, Tc = 25°C) - ±0.5 dB

Note:

1. Monitor Photodiode will also operate under zero bias conditions.

Fiber Pigtail: Tight jacketed, self-mode stripping, single mode fiber

Parameter Minimum Maximum Units

Length 1.0 - m

Spot Size (Mode Radius) 4.5 5.5 µm

Cladding Diameter 122 128 µm

Core/Cladding Concentricity - 1.0 µm

Secondary Jacket Diameter 0.8 1.0 mm

Effective Cutoff Wavelength 1150 1240 nm

Ratings

Parameter Symbol Test Conditions Min. Max. Units

THERMISTOR Tc = 25°C, unless otherwise

specified

Resistance Rt 9.5 10.5 kΩ

Temperature Coefficient of Rt ∆Rt/∆T Typ -4.4 %dR/°C

β Constant β0°C to 50°C Typ 3900 °K

Ratings

Parameter Symbol Test Conditions Min. Max. Units

TEC Pf = 2.5 mW, unless otherwise

specified

TEC Cooling Current Ic ∆T = -40°C, Tc = 85°C - 1.0 A

TEC Heating Current Ih ∆T = 65°C, Tc = -40°C - 1.0 A

Voltage Vc ∆T = -40°C to 65°C - 2.0 V

473

Ordering Information

LSC2110 - 622 - XX

Connector Type:

FP = FC/PC

ST = ST®

SC = SC

DN = DIN

BI = Biconic

SA = SMA

SF = Super Polish FC/PC

CDRH Certification

Hewlett-Packard Ltd

Whitehouse Road

Ipswich, Suffolk IP1 5PB

England

Manufactured: _______ Serial No. _______

Model No. ____________

This product conforms to the applicable

requirements of 21 CFR 1040 at the date of

manufacture.

Laser Warning

ST® is a Registered Trademark of AT&T.

Handling Precautions

1. The LSC2110-622 can be

damaged by current surges or

overvoltage.

2. Power supply transient

precautions should be taken.

3. Normal handling precautions

for electrostatic sensitive

devices should be taken.