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1.25G BiDi LC 20km SFP Transceiver
Posted on 2025-09-04

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


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