QLD156N-5050

Preliminary

1550 nm 50mW DFB Laser Butterfly Package

C00177-01 October 2015

1. DESCRIPTIONThe QLD156N-5050 is a 1550-nm distributed feedback (DFB) laser for use in seeder for fiber lasers, sensing
applications and telecom/data communications. The laser is assembled into a 14-pin butterfly package with an opticalisolator, a monitor PD and a thermo-electric cooler.
2.

FEATURES 50-mW fiber output power Single longitudinal mode operation at 1550 nm
 Fiber-pigtailed 14-pin butterfly package with a TEC

3.

APPLICATION Seeder for fiber lasers
 Sensing Telecom/data communication

4.

ABSOLUTE MAXIMUM RATINGPARAMETER
LD Forward Current (CW)LD Reverse Voltage
PD Forward Current
PD Reverse Voltage
TEC Drive Current
TEC Drive Voltage
Operation Temperature
Storage Temperature
Lead Soldering Temperature (10 s)

SYMBOL
IF
VRLD
IVFPD
VRPD
ITEC
VTEC
Tc
Tstg
Tsld

1/3

(TC = 25°C, unless otherwise specified)
RATING
UNIT
500mA
2V
10mA
20V
2A
4.3
V
-20 to 70
C-40 to 85
C260
C

QLD156N-5050
5.

C00177-01

OPTICAL AND ELECTRICAL CHARACTERISTICSPARAMETER
Peak Wavelength
Spectral Width (FWHM)
Temperature Coefficient of p
Current Coefficient of p
Threshold Current
CW Fiber Output PowerOperation Current
Operation Voltage
Sidemode Suppression Ratio
Polarization Extinction Ratio

SYMBOLpdp/dTdp/dI
IthPf
Iop
Vop
SMSR
PER

Monitor PD Current

Im

Thermistor ResistanceRth

TEC Drive Current
TEC Drive Voltage

ITEC
VTEC

6.

TEST CONDITION
CW, Pf =50 mW
CW, Pf =50 mW
CW
CW
CW
CW, If=300 mA
CW, Pf =50 mW
CW, Pf =50 mW
CW, Pf =50 mW
CW
CW, Pf =50 mW,
Vr=5V
TLD = 25°C,
B=3900+/-100K
Pf=50 mW, TC= 70°C,
Pf=50 mW, TC= 70°C

OUTLINE DRAWING

2/3(TLD = 25°C, unless otherwise specified)
MIN
TYP
MAX
UNIT
1547
1550
1553
nm
25
MHz
0.1
nm/K
0.01
nm/mA
40mA
50mW
300
mA
2.5
V
35dB
20dB
100-2000

A

9.5

1010.5k

--

1.2
2.5

A
V

QLD156N-5050
7.

C00177-01

PIN CONFIGURATION
No.
1234567

Description
Thermistor
Thermistor
Laser CathodePD Anode
PD CathodeTEC (+)TEC (-)

No.
891011121314Description
NCNC
NC
Laser AnodeNC
Case GroundNC

8. NOTICE Safety Information
This product is classified as Class 3B laser product, and complies with 21 CFR Part 1040.10.
Please do not take a look at laser lighting in operations since laser devices may cause troubles to human eyes.
Please do not eat, burn, break and make chemical process of the products since they contain GaAs material.
 Handling products
Semiconductor lasers are easily damaged by external stress such as excess temperature and ESD.
Please pay attention to handling products, and use within range of maximum ratings.
QD Laser takes no responsibility for any failure or unusual operation resulting from improper handling, or unusualphysical or electrical stress.
 RoHSThis product conforms to RoHS compliance related EU Directive 2011/65/EU.

QD Laser, Inc.
Contact : info@qdlaser.com

http://www.qdlaser.com

Copyright 2015 All Rights Reserved by QD Laser, Inc.
Keihin Bldg. 1F 1-1 Minamiwatarida-cho, Kawasaki-ku, Kawasaki, Kanagawa Zip 210-0855 JapanAll company or product names mentioned herein are trademarks or registered trademarks of their respective owners. Information
provided in this data sheet is accurate at time of publication and is subject to change without advance notice.

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