LD-PD's DWDM DFB(Distributed feedback type) semiconductor laser is a 14PIN butterfly package, with built-in TEC, lens, thermistor and PD integrated in the 14PIN butterfly package. The airtight design meets the requirements of telecommunications grade work. It has the characteristics of narrow line width and high power (20mW). It supports pigtail PM1550 or SMF-28E device output, and also supports customer-specified pin definition customization.
Product model
Name
Model
Description
Parameter
Price
Parameter
Features
● 14PIN Butterfly Fulll sealed package
● C+L Band DWDM 100GHZ ITU Channel
● Built-in TEC, Thermistor & Monitor PD
● DWDM DFB Chip,Narrow linewidth
● PM1550/SMF-28E Pigtail optional
Laser Specifications
Tsub=25°C, CW bias unless stated otherwise
Optical Electrical Characteristics (TCHIP = 15 - 35 °C, TCASE = 25 °C, Iop = 150 mA)
Parameters
Min
Typ.
Max
Unit
Central wavelength
1515
1516
1517
nm
Side Mode Suppression Ratio（SMSR）
40
50
-
dB
Linewidth*1
-
3
-
MHz
Power In fiber
10
20
-
mW
Forward Voltage
-
2.0
2.5
V
Forward Current
-
120
150
mA
Mode hope free tuning current
20
50
-
mA
Threshold Current
-
15
-
mA
Quantum Efficiency
-
0.25
-
W/A
Current Tuning Coefficient
-
0.002
-
nm/mA
Temperature Tuning Coefficient
-
0.08
-
nm/°C
MPD Responsivity
-
0.5
-
A/W
PER(PM Version)
-
18
-
dB
*1 reference below linewidth testing value.
Pigtail parameters
Fiber Type
SM15-PS-U25D
Mode Field Diametera
10.5 ± 0.5 µm @ 1550nm
Numerical Aperture
0.12
Fiber Length
1.0m
Connector
FC/APC (2.0 mm Narrow Key)
Jacket
Ø900 µm
Maximum rating values
Parameters
Typical value
unit
Power in fiber
10
mW
Max Driving Current
150
mA
LD Reverse Voltage
2
V
PD Reverse Voltage
15
V
Operation case temp
0 to 50
°C
Storage Temp
-10 to 65
°C
TEC Current
2.5
A
TEC Voltage
4.0
V
Thermistor Resitance value
10
kohms
Optical Spectrum
Wavelength Vs Current and temp Tuning
DFB Linewidth Testing Result(50KM Delay）
L-I-V Curve
PER Value testing（PM Version）
Package Size
TYPE A
TYPE B
Pin definition
Schematic Diagram (Top View)
TYPE A
TYPE A Pin Connection
PIN#
Function
PIN#
Function
1
Thermistor
8
Case Ground
2
Thermistor
9
Case Ground
3
LD(-)
10
NC
4
Detector (+)
11
LD(+)
5
Detector (-)
12
LD (–), RF
6
TEC (+)
13
LD (+)
7
TEC (–)
14
NC
TYPE B
TYPE B Pin Connection
1
Thermoelectric Cooler (+)
8
N/C
2
Thermistor
9
N/C
3
PD Monitor Anode (-)
10
Laser Anode (+)
4
PD Monitor Cathode (+)
11
Laser Cathode (–)
5
Thermistor
12
N/C
6
N/C
13
Case Ground
7
N/C
14
Thermoelectric Cooler (–)
Application
● DWDM Test source
● DTS seed laser
Ordering Info
DWDM-DFB- □□□□-☆-A8▽- XX
□□□□: Wavelength
1530: 1530nm
1535: 1535nm
1548.5: 1548.5nm
1550: 1550nm
*****
1610: 1610nm
☆ : Pin Definition
A: Telecom A
B: Pump B
▽: Wavelength Tolerance
1: ±1nm
2: ±2nm
XX: Fiber and Connector Type
SA=SMF-28E+ FC/APC
SP=SMF-28E+ FC/PC
PA=PM1550 Fiber+ FC/APC
PP=PM1550 Fiber+ FC/PC
(Our DWDM DFB Standard with isolator built insid,customers who do not need isolato,please add “-WOI”in the end of our PN#）
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