1.25G BiDi SFP Optical Transceiver, 20km

Single-Fiber Bidirectional Communication for Efficient Network Connectivity

The DTECH BiDi SFP Optical Transceiver is designed for fiber-optic networking applications that require bidirectional data transmission over a single optical fiber. By using different transmit and receive wavelengths, BiDi technology enables two-way communication while helping reduce fiber usage and cabling complexity.

The DTECH SFP-155M-BX20D1 is labeled for 1.25G operation, a 20km transmission distance, 1550nm transmission, 1310nm reception, and Digital Diagnostic Monitoring (DDM). Its compact SFP form factor supports deployment in compatible network switches, routers, and fiber-optic networking equipment.

Key Features

• • Single-fiber bidirectional transmission

• • 1550nm Tx / 1310nm Rx wavelength configuration

• • Labeled transmission distance of up to 20km

• • Digital Diagnostic Monitoring (DDM)

• • Compact, hot-pluggable SFP form factor

• • Metal housing with a color-coded bail latch

• • OEM/ODM support for qualifying projects

Need a Compatible BiDi SFP Pair?

Contact DTECH with your equipment model, required transmission distance, and interface specifications. Our team can help you identify the appropriate wavelength pair and discuss your project requirements.

Single-Fiber Bidirectional Transmission

BiDi technology uses separate transmit and receive wavelengths to carry two-way optical communication over one fiber strand. It can help reduce fiber consumption in suitable network deployments.

Complementary Wavelength Pairing

The 1550nm Tx / 1310nm Rx configuration requires a compatible counterpart with the opposite wavelength arrangement. Check both ends before ordering.

DDM for Optical Diagnostics

Digital Diagnostic Monitoring can provide supported optical and operating measurements. The available parameters depend on the module implementation and host equipment.

Compact Metal Housing

The metal enclosure and compact SFP form factor are designed for integration into compatible networking equipment. Verify the host's interface and operating requirements before installation.

• Why choose BiDi SFP modules?

  • • Reduce the number of fiber strands needed for a bidirectional link.

  • • Simplify fiber allocation in existing network infrastructure.

  • • Support point-to-point optical links between compatible switches, routers, and other networking devices.

  • • Help network operators manage fiber resources in campus, enterprise, and access networks.

    Applications

    

    Enterprise Network Connectivity

    Connect compatible network switches across buildings or network segments where a suitable single-fiber optical link is available.

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    Telecommunications and Access Networks

    Use complementary BiDi transceivers in suitable fiber access and aggregation deployments, subject to the required optical budget and equipment compatibility.

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    Industrial Network Infrastructure

    Integrate into compatible industrial switches or other network equipment when the transceiver's environmental specifications meet the installation requirements.

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    Compatibility and Selection Guide

    What to check before ordering

    1. Host equipment: Confirm the switch, router, or other device supports the selected SFP transceiver.

    2. Wavelength pairing: Match a 1550nm Tx / 1310nm Rx module with a compatible 1310nm Tx / 1550nm Rx counterpart.

    3. Transmission distance: Verify that the required link distance falls within the specified optical budget.

    4. Fiber and connector: Confirm the supported fiber type, LC interface details, and connector configuration.

    5. Data rate: Ensure the transceiver's data rate meets the network requirements.

    6. Environmental conditions: Check the rated operating temperature and other installation limits in the datasheet.

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    Q1: What is a BiDi SFP optical transceiver?

    A BiDi SFP is a small form-factor pluggable optical transceiver that uses different transmit and receive wavelengths to enable bidirectional communication over a single optical fiber.

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     Q2: What does 1550nm Tx / 1310nm Rx mean?

    It means the module transmits optical signals at 1550nm and receives signals at 1310nm. The opposite end must use a compatible wavelength configuration.

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    Q3: Can a BiDi SFP communicate over 20km?

    The supplied product label specifies a 20km transmission distance. Actual link performance depends on the optical budget, fiber attenuation, connector losses, and other network conditions.

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    Q4: What is DDM in an SFP transceiver?

    DDM stands for Digital Diagnostic Monitoring. Depending on the module, it can provide information such as temperature, supply voltage, transmit optical power, receive optical power, and laser bias current.

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    Q5: How do I check SFP compatibility with my switch?

    Check the switch model, supported SFP types, data rate, wavelength configuration, connector, and vendor compatibility requirements. Consult the equipment documentation before ordering.

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    Q6: Can I order DTECH BiDi SFP modules in bulk?

    Contact DTECH to discuss product availability, order quantity, packaging, and OEM/ODM requirements for your project.

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    Looking for the Right BiDi SFP Transceiver?

    Tell us your equipment model, required transmission distance, and order quantity. DTECH can help you check the appropriate optical transceiver configuration for your application.