1240~2000nm DFB Lasers

High Power DFB Laser for Communication


The HST-DFB-BF14-x-x laser modules are designed for optical sensing and optical communication applications. These modules incorporate high output power while maintaining high linearity. The narrow line width and the option of using polarization maintaining optical fiber make it especially ideal for external modulation development.


• Standard OC-48 pin compatible

• Narrow spectral linewidth

• Low noise

• Compliant GR-468 reliability regulation


Absolute Operation Conditions:

Parameter Symbol Value Unit
Laser Forward Current, Max If(LD) 100 mA
Laser Reverse Voltage, Min Vr(LD) 2 V
Monitor PD Current, Max If(PD) 2 mA
Monitor PD Reverse Bias Voltage,Max Vr(PD) 20 V
TEC Current, Max ITEC 2.4 A
TEC Voltage, Max VTEC 2.9 V
Operation Tempaerature Topr -20~+70
Storage Temperature Tstg -40~+85
PIN Solder Temperature/Period Tsld 260/10 ℃/s

Operation Specification:

Parameter Symbol Test Conditions Min Typ Max Unit
Optical Output Power PO CW 3 5 mW
Threshold Current Ith CW 12 18 mA
Operation Current Iop CW,5mW 50 mA
Operation Forward Voltage Vop CW,5mW 1.5 2 V
Slope Efficiency η CW,5mW 0.05 0.1 mW/mA
Central Wavelength λc CW,5mW,25℃ λc-1 λc λc+1 nm
Side-mode Suppresion Ratio SMSR CW,5mW 35 dB
Spectral Width(20dB) ∆λ CW,5mW 0.2 nm
Wavelength Stability λs CW,5mW,25℃ -0.1 +0.1 nm
Wavelength VS Temperature Coefficient Δλ/T Constant laser operation current 0.1 nm/℃
Wavelength VS Laser Current Coefficient Δλ/I Constant laser operation temperature 0.01 nm/mA
Thermistor Resistance Rth Ttherm = 25℃ 9.5 10 10.5 kΩ

Absorption lines relate with special gas molecular:

Gas Molecular Absorption Line
HF 1268.7nm、1278nm、1273nm
HBr 1343nm
H2O 1368nm、1392nm、1800nm
NH3 1512nm、1531nm
C2H2 1532.68nm
N2O 1521nm
CO 1567nm、2332nm
H2S 1576nm、1578nm、1590nm
CO2 1580nm、1998nm、2004nm
C2H4 1620nm、1627nm
CH4 1647nm、1650.9nm、1653.7nm、1660nm
HCl 1742nm


• Optical communication, wavelength division multiplexing (WDM) application

• Opto-electrical instrument

• Light source


• Gas sensing