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    • 1557.4nm DFB Tunable Laser diode（TO39 Package）     


    The PL-DFB-1557.4-A-A81 1557.4nm DFB laser diode module made by LD-PD is a cost effective, highly coherent laser source. The DFB laser diode chip is packaged in an industry standard hermetically sealed TO39 package with TEC and PD Built in.



    Product model


    Name Model Price
    1557.4nm DFB SM Laser diode（TO39）   [PDF]  [RFQ]

    PL-DFB-1557.4-A-A81-TO39
    Stock NO.: A80011150     		[Please inquire]
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    Parameter



    Features

    ● Narrow Linewidth < 2MHz

    ● Excellent wavelength control and stability

    ● Industry Standard TO39 package

    ● Mode-Hop free tuning

    ● Excellant reliability

    ● Customer specific wavelengths available

    Laser Specifications

    Electrical/Optical Characteristics (Tsub=25°C, CW bias unless stated otherwise)

    Parameter

    Symbol

    Min

    Typ

    Max

    Unit

    Centre Wavelength

    λ

    1556.5

    1557.0

    1558.5

    nm

    Side Mode Suppression Ratio

    SMSR

    30

    40


    dB

    Threshold Current

    Ith


    20

    30

    mA

    Operating Current

    Iop


    80

    120

    mA

    Chip output Power

    Pf

    15

    20

    30

    mW

    Quantum Efficiency

    η

    0.08

    0.12


    mW/mA

    Current Tuning Coefficient

    ∆λ/∆I


    0.015


    nm/mA

    Temperature Tuning Coefficient

    ∆λ/∆T


    0.12


    nm/K

    Forward Voltage

    Vf


    1.3

    2

    V

    Thermistor Resistance

    RT

    9.5

    10

    10.5

    KΩ

    Thermistor Temp. Coefficient



    -4.4


    %/°C


    Spectrum

    1557.4.png

    L-I Curve

    1571.png

    DFB Linewidth Testing Result

    3F}3~5GMTW8F9$)8_GB@VSG.png


    Dimensions and Pin definitions

    Uinte（mm）

    0230105161326777.png

    Absolute  Maximum Ratings

    Item

    Unit

    Min

    Typ

    Max

    Case Temperature

      ℃

    -5

    25

    70

    Chip Temperature

    ℃

    +10

    25

    40

    Operating Current

    mA

    0

    80

    120

    Forward Voltage

    V

    0.8

    1.2

    1.8

    TEC Current

    A

    -

    -

    1.2

    Reverse Voltage（LD）

    V

    -

    -

    2.0

    Reverse Voltage(PD)

    V

    -

    -

    20


    Application

    ● Tunable diode laser absorption spectroscopy

    ● H2O Monitoring

    Ordering Info

    PL-DFB-□□□□-☆-A8▽-TO39

    □□□□：Wavelength

    1557.4: 1557.4nm

    *****

    1653.7: 1653.7nm

    ☆ ：Output Power

    A：10mW

    B：20mW

    ▽：Wavelength Tolerance

    1：±1nm

    2：±2nm



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