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The LINK-PP LS-BL55311G-03C is a 1.25 Gbps BiDi SFP optical transceiver that transmits at 1550nm and receives at 1310nm to provide full-duplex data communication over a single simplex LC fiber, with link distances of up to 3 km via single-mode fiber.
| LINK-PP Part Number | LS-BL55311G-03C | Vendor Name | LINK-PP |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 1550nm-TX/1310nm-RX | Max Cable Distance | 3km |
| Connector | Simplex LC | Media | SMF |
| Transmitter Type |
FP | Receiver Type |
PIN |
| TX Power | -15 to -8dBm | RX Power | -23 to -1dBm |
| Receiver Sensitivity | <-23dBm | DOM Support | Yes |
| Operating Temperature Range | 0 to 70°C | Protocols |
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
This LINK-PP LS-BL55311G-03C 1G BiDi SFP is hot-pluggable and features a BiDi design (1550nm TX/1310nm RX) for 1.25 Gbps bidirectional transmission over a single simplex LC fiber, supporting Fast Ethernet and Gigabit-class links with a reach of up to 3 km over single-mode fiber, thereby reducing fiber count and cabling complexity.
The LINK-PP LS-BL55311G-03C module uses a FP laser for transmission and a PIN photodiode paired with a trans-impedance amplifier (TIA) for reception, delivering reliable optical output and receiver sensitivity suitable for medium-range SMF links.
This LINK-PP LS-BL55311G-03C BiDi SFP module supports 1.25 Gbps operation for common applications, including Ethernet and fiber aggregation, where a single-fiber solution is preferred.
The standard wavelength pairing of 1550nm (TX) / 1310 nm(RX) provides compatibility with other BiDi modules using the complementary wavelength assignment, as well as with SFP MSA-compliant equipment.
This LINK-PP LS-BL55311G-03C BiDi transceiver is specified for up to 3km transmission on standard single-mode fiber under normal link conditions, providing reliable bidirectional connectivity for metro access, campus network interconnects, and point-to-point links.
The simplex LC interface provides a single, compact connector for bidirectional operation, driving down fiber consumption, streamlining cable management, and lowering the overall deployment cost.
The onboard DOM of the LINK-PP LS-BL55311G-03C module gives access to live telemetry, temperature, supply voltage, and transmitted/received optical power, facilitating early fault detection and easy troubleshooting.
Each LINK-PP module combines ISO 9001 quality assurance with CE, RoHS, and FCC certifications to ensure premium reliability and seamless deployment.
Precision testing ensures performance consistency across real-world applications.
Aligned with global standards for safety, durability, and performance assurance.
Validated for reliable use with LINK-PP networking equipment.
Thorough inspection procedures ensure that every LINK-PP module runs smoothly and efficiently. To find out more, visit the LINK-PP Test Support Center.
Spectrum analysis verifies precise wavelength alignment for stable and standards-compliant optical transmission.
Signal waveform analysis ensures clean eye patterns for improved transmission stability and quality.
BER testing ensures minimal transmission errors and supports dependable network communication.
Thermal performance testing ensures reliable operation under both high and low temperature conditions.
LINK-PP ensures every module arrives deployment-ready, backed by a logistics system built for fast, safe, and dependable international delivery.
Protective anti-static layers help prevent damage caused by unwanted electrical charges.
Vibration-resistant packaging ensures the secure delivery of fragile components.
Rapid shipping preparation ensures timely delivery and customer satisfaction.
Cross-border logistics solutions facilitate the delivery of goods to customers worldwide.
The LINK-PP LS-BL55311G-03C 1G BiDi SFP transceiver demonstrates reliable single-fiber transmission for short-distance network links. With 1550nm TX/1310nm RX support, a 3km reach, and DOM monitoring, it is ideal for enterprise access switches, campus network connections, security monitoring systems, and Ethernet links.
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-BL55311G-03C 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 | 1550nm-TX/1310nm-RX | 1550nm-TX/1310nm-RX | 1550nm-TX/1310nm-RX | 1550nm-TX/1310nm-RX | 1550nm-TX/1310nm-RX | 1550nm-TX/1310nm-RX |
Connector | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC |
Cable Distance (Max) | 3km | 2km | 10km | 60km | 40km | 20km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
TX Power | -15 to -8dBm | -15 to -8dBm | -9 to 0dBm | -5 to 0dBm | -5 to 0dBm | -9 to 0dBm |
Receiver Sensitivity | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm |
Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
Form Factor | SFP | SFP | SFP | SFP | SFP | SFP |
Transmitter Type | FP | FP | DFB | DFB | DFB | DFB |
Receiver Type | PIN | PIN | PIN | PIN | PIN | PIN |
DOM Support | Yes | Yes | Yes | Yes | Yes | Yes |
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 | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: What type of fiber optic cable is required for this 3km transceiver? By J***n on 2026-01-31
A: It requires standard Single-Mode Fiber with a Simplex LC connector. You only need a single strand of fiber for both transmitting and receiving data, which maximizes your cabling infrastructure. By admin on 2026-01-31
Q: Will this simplex LC module work with standard Cisco Catalyst edge switches? By R***t on 2025-11-20
A: Yes, it is fully MSA compliant and codes seamlessly with mainstream commercial switches including Cisco, HPE, and Juniper without triggering unauthorized optic warnings. By admin on 2025-11-20
Q: Does this LS-BL55311G-03C module require a specific pairing on the other end? By N***z on 2025-08-05
A: Yes, since it transmits at 1550nm and receives at 1310nm, you must pair it with a 1310nm-TX/1550nm-RX BiDi transceiver on the other end of the single-mode fiber to establish the link. By admin on 2025-08-06
Q: Is this 1G optical module suitable for outdoor unconditioned enclosures? By P***r on 2025-08-01
A: This specific model features a commercial temperature range of 0 to 70C. For outdoor unconditioned cabinets, we advise using the industrial grade version (LS-BL55311G-03I) to ensure hardware stability in extreme weather. By admin on 2025-08-02
Q: Does the transceiver support digital diagnostic monitoring for optical health? By A***s on 2024-06-07
A: Yes, it fully supports standard DDM/DOM parameters. You can monitor real-time RX power, TX power, voltage, and temperature directly through your network management system. By admin on 2024-06-07
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