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    • 1840nm DFB Tunable Laser Diode     


    The PL-DFB-1840-A1 1840nm 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 14 pin butterfly package with TEC and PD Built in.



    Product model


    Name Model Price
    1840nm DFB SM Laser diode   [PDF]  [RFQ]

    PL-DFB-1840-A-A81-SA     		[Please inquire]
     Call us 
    1840nm DFB PM Laser diode   [PDF]  [RFQ]

    PL-DFB-1840-A-A81-PA     		[Please inquire]
     Call us 

    Parameter


    Features

    ● Narrow Linewidth < 2MHz

    ● Excellent wavelength control and stability

    ● Industry Standard 14 pin Butterfly package

    ● Mode-Hop free tuning

    ● Excellent 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

    1839

    1840

    1841

    nm

    Side Mode Suppression Ratio

    SMSR

    30

    40


    dB

    Threshold Current

    Ith


    20

    25

    mA

    Operating Current

    Iop


    100

    120

    mA

    Chip output Power

    Pf

    3

    4

    5

    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

    Polarization Extinction RatioPER≥1827.4
    		dB

    Thermistor Temp. Coefficient



    -4.4


    %/°C

    Connector

    FC/APC


    Spectrum

    1840nm DFB Laser.png

    L-I Curve

    1840nm DFB Laser1.png


    Tuning Characteristics

    1840nm DFB Laser2.png

    Beam Quality

    D)XRNI6(B736%L%HB68S3.jpg    

    2D 


     ZUYY5)4Z332N5V9_ZJ`JF.png

    3D


    Package Size

    1798.2.png

    Pin definition

    p1.png

    Pin Connection

    PIN#

    Function

    PIN#

    Function

    1

    Thermistor

    8

    Case Ground

    2

    Thermistor

    9

    Case Ground

    3

    LD(-)

    10

    NC

    4

    NC

    11

    LD(+)

    5

    NC

    12

    LD(-)

    6

    TEC (+)

    13

    LD (+)

    7

    TEC (–)

    14

    NC


    Absolute  Maximum Ratings

    Item

    Unit

    Min

    Typ

    Max

    Case Temperature

      ℃

    -5

    25

    70

    Chip Temperature

    ℃

    +10

    25

    40

    Operating Current

    mA

    0

    100

    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

    ● Gas Monitoring

    Ordering Info

    PL-DFB-□□□□-☆-A8▽-XX

    □□□□：Wavelength

    1512: 1512nm

    *****

    1653.7: 1653.7nm

    1840: 1840m

    ☆ ：Output Power

    A：5mW

    B：10mW

    ▽：Wavelength Tolerance

    1：±1nm

    2：±2nm

    XX: Fiber and Connector Type

    SA=SMF-28E+ FC/APC

    SP=SMF-28E+ FC/PC

    PP=PM Fiber+ FC/PC

    PA=PM Fiber+ FC/APC




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    10+
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    50+
    50 + Countries Bussiness
    10000+
    10k + Diodes sold worldwide
    30+
    30+ Invention patent
    1
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    10
    10+ Advanced Optical Solutions
    Add : 288 Woodlands Loop #04-00, Singapore 738100 Email : info@ld-pd.com Tel : （+65)31638599 Fax : (+65)31588700 Copyright © 2012-2026 LD-PD PTE. LTD. All Rights Reverved  LD-PD PTE. LTD. is proud to be RoHS certified through SGS and ISO9001 certified through GIC.
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