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The LINK-PP LS-BL49311G-20I 1G BiDi SFP transceiver provides a data transmission speed of 1.25 Gbps over a distance of up to 20 km using single-mode fiber. It operates at 1490nm for transmission and 1310nm for reception. This industrial-grade module offers stable, reliable connectivity, even in challenging environments.
| LINK-PP Part Number | LS-BL49311G-20I | Vendor Name | LINK-PP |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 1490nm-TX/1310nm-RX | Max Cable Distance | 20km |
| Connector | Simplex LC | Media | SMF |
| Transmitter Type | DFB BiDi | Receiver Type |
PIN |
| TX Power | -9 to 0dBm | RX Power | -23 to -1dBm |
| Receiver Sensitivity | <-23dBm | Receiver Overload | -1dBm |
| Operating Temperature Range | -40 to 85°C | Protocols |
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
Featuring reliable 1.25 Gbps performance and true plug-and-play ease, this LINK-PP LS-BL49311G-20I 1G BiDi SFP module allows for simple deployment. It includes a high-reliability DFB laser, a sensitive PIN/TIA receiver, a simplex LC interface, and an integrated DOM. Its BiDi technology enables full-duplex communication over a single fiber, boosting fiber utilization and cutting cabling complexity and infrastructure costs.
This LINK-PP LS-BL49311G-20I BiDi SFP optical module employs complementary transmit and receive wavelengths to achieve simultaneous bidirectional communication over a single fiber. Its efficient design enhances fiber efficiency and presents a cost-effective pathway to expand network capacity while avoiding incremental fiber deployment.
The LINK-PP LS-BL49311G-20I module is designed to provide consistent and stable performance, with data transfer speeds of up to 1.25 Gbps, ensuring Gigabit connectivity across a wide range of applications.
The LINK-PP LS-BL49311G-20I 1G BiDi SFP module uses 1490nm transmission and 1310nm reception wavelengths to achieve simultaneous bidirectional communication over a single fiber. This design improves fiber utilization and simplifies long-distance network connections.
Delivering link distances of up to 20 km over single-mode fiber, this LINK-PP LS-BL49311G-20I 1G BiDi module excels in industrial networking, campus connectivity, and other remote link applications requiring consistent, long-range performance.
Designed with a simplex LC port, the LINK-PP LS-BL49311G-20I BiDi SFP module supports bidirectional communication over one fiber, reducing infrastructure needs and simplifying cable management.
With DOM integrated, this LINK-PP LS-BL49311G-20I 1G BiDi SFP module offers continuous visibility into critical parameters such as temperature, voltage, and optical power, accelerating fault diagnosis and enhancing network dependability.
Compliant with ISO 9001, CE, RoHS, and FCC standards, every LINK-PP module delivers safe, compliant, and eco-friendly performance across global deployments.
Each LINK-PP module undergoes detailed performance validation and environmental testing to ensure reliability in practical network environments.
Quality assurance processes confirm compliance with international standards and long-term durability.
Tested for interoperability with LINK-PP systems to deliver dependable, plug-and-play performance.
Every LINK-PP module is evaluated through strict testing to ensure reliable operation and signal stability. For more details, visit the LINK-PP Test Support Center.
Confirms precise wavelength output for compliant operation.
Eye pattern analysis reveals a clear and stable signal.
Reports the frequency of bit errors to judge signal quality.
Examines resistance to thermal stress for long-term reliability.
With a focus on speed and security, LINK-PP provides ready-to-install modules supported by a robust worldwide logistics network.
Anti-static safeguard packaging reduces electrostatic risks to internal components.
Transit-ready protective packing helps prevent damage during shipping.
Quick order dispatch for quicker delivery.
Worldwide logistics support enables efficient cross-border distribution.
This LINK-PP LS-BL49311G-20I 1G BiDi SFP module offers a straightforward setup for industrial networks and long-distance links. Simply insert it into a compatible SFP port, connect a single strand of single-mode fiber, pair it with a complementary BiDi module, and you're ready for stable bidirectional communication.
LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.
Professional technical guidance to help customers select the most suitable LS-BL49311G-20I modules based on network architecture and application requirements.
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.
LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.
15-day no-reason return and refund
Free replacement for dead-on-arrival (DOA) or defective items within the initial period
Free repair services for manufacturing defects throughout the warranty period
Warranty exclusions and conditions apply
Compatible | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP |
Data Rate (Max) | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps |
Wavelength | 1490nm-TX/1310nm-RX | 1490nm-TX/1310nm-RX | 1490nm-TX/1310nm-RX | 1550nm-TX/1310nm-RX | 1550nm-TX/1310nm-RX | 1550nm-TX/1490nm-RX |
Connector | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC |
Cable Distance (Max) | 20km | 10km | 40km | 60km | 3km | 150km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
TX Power | -9 to 0dBm | -9 to 0dBm | -5 to 0dBm | -5 to 0dBm | -15 to -8dBm | 0 to +5dBm |
Receiver Sensitivity | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -28 to -1dBm |
Operating Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
Form Factor | SFP | SFP | SFP | SFP | SFP | SFP |
Transmitter Type | DFB BiDi | DFB BiDi | DFB BiDi | DFB | FP | DFB |
Receiver Type | PIN | PIN | PIN | PIN | PIN | APD |
Receiver Overload | -1dBm | -1dBm | -1dBm | -1dBm | ||
Protocols | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | SFP MSA、SFF-8472 |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: Can this 1G BiDi SFP module work with Cisco, Huawei, and H3C gigabit switches? By J***r on 2025-12-01
A: Yes. The LS-BL49311G-20I is designed for multi-brand compatibility and can be customized with OEM coding for major network platforms. It supports standard SFP MSA compliance and is widely used with Cisco, Huawei, H3C, MikroTik, and other gigabit Ethernet equipment. By admin on 2025-12-02
Q: Does the module support outdoor or industrial environments with temperature changes? By J***k on 2025-05-21
A: Yes. This industrial-grade 1G BiDi SFP supports a wide operating temperature range of -40°C to +85°C. It also includes DOM/DDM monitoring for real-time tracking of optical power, temperature, and voltage, helping engineers maintain remote network connections. By admin on 2025-05-21
Q: What fiber type and distance can this industrial BiDi SFP support? By R***t on 2024-04-13
A: This module uses simplex LC single-mode fiber (SMF) and supports up to 20km transmission. It uses 1490nm-TX and 1310nm-RX BiDi wavelength technology, making it suitable for long-distance campus networks, industrial links, and telecom access applications. By admin on 2024-04-13
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