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1.25G BiDi 1310nm/1550nm LC 20km SFP Transceiver

By C-LIGHT Marketing 丨 Sep 4, 2025
Table of Contents

    1.25G BiDi SFP transceiver features an LC interface and supports transmission distances of up to 20 kilometers. Its core innovation lies in the use of Wavelength Division Multiplexing technology, enabling bidirectional communication over a single fiber by transmitting and receiving optical signals on different wavelengths. This design effectively optimizes fiber infrastructure utilization. It is primarily designed for enterprise networks, fiber access applications, and 5G mobile fronthaul, where efficient fiber capacity usage is essential.


    -40℃~85℃ 丨 1.25G 1310nm/1550nm BiDI 丨

    TX :-9~-3dBm丨RX:< -19dBm  丨< 1.5w丨Factory warranty


    CLSFPGEBD131520DI/ CLSFPGEBD151320DI

    1.25G-BIDI-20KM

    ●Up to 1.25Gbps data links

    ●20Km with 9/125µm SMF

    ●1310nm FP /1550nm DFB laser/ PIN receiver    

    ●Simplex LC Connector

    ●Hot-pluggable SFP footprint             

    ●Single 3. 3V power supply              

    ●Operating temperature: -40℃~85℃

    ●RoHS  



     Specification

    Number

    CLSFPGEBD131520DI

    CLSFPGEBD151320DI

    VendorC-LIGHT
    Form FactorSFPData Rate Max

    1.25Gbp

    Wavelength1310nm/1550nmDistance

    20km

    ConnectorBIDI LCMediaSMF
    Transmitter TypeDFB BIDIReceiver TypePIN
    TX Power-9dBm~3dBmReceiver Sensitivity< -19dbm
    Power Budget10dBmReceiver Overload>-2dBm
    Power Consumption≤1.5WExtinction Ratio>9dB
    DDM/DOMSupportedIndustrial Temperature Range-40°C to 85°C
    ProtocolsFast Ethernet, Gigabit Fibre Channel, MSA CompliantWarranty3 Years


     System Test

    1.25G-BIDI-20KM-Transceiver.jpg

    1.25G-BIDI-20KM-test.jpg

    1.25G-BIDI-20KM-DDM.png


     Test video


     Related Products
    Number

    CLSFPGEBD131520DI

    CLSFPGEBD151320DI

    CLSFPGEBD131510DI

    CLSFPGEBD151310DI

    Wavelength1310nm/1550nm1310nm/1550nm
    ConnectorSimplex LCSimplex LC

    Cable Distance (Max.)

    20km

    10Km

    Data Rate

    1.25Gbps1.25Gbps

    Transmitter Type

    DFB BIDIDFB BIDI

    TX Power

    -9dBm~3dBm

    -2dBm~-6dBm

    Receiver Sensitivity

    < -19dBm

    <  -23dBm

    Power Consumption≤ 1.5W≤ 1.5W

    Receiver Overload

    >-2dBm>1dBm
    Extinction Ratio>9dB>9dB


     Application Graph
    1.25G-BIDI-20KM-application.jpg


    For any questions, please contact us by email or WhatsApp.

    Email: sales@c-light.com

    WhatsApp: +86 132 6656 7067

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