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The LINK-PP LS-BL27331G-80C is a high-reach, 1.25-Gbps BiDi SFP transceiver designed for efficient point-to-point connections via single-mode fiber. With a simplex LC interface, it utilizes transmit and receive wavelengths of 1270 and 1330 nanometers, respectively, to enable full-duplex communication on a single fiber with a link distance of up to 80 kilometers.
| LINK-PP Part Number | LS-BL27331G-80C | Vendor Name | LINK-PP |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 1270nm-TX/1330nm-RX | Max Cable Distance | 80km |
| Connector | Simplex LC | Media | SMF |
| Transmitter Type | DFB BiDi | Receiver Type | PIN |
| TX Power | 0 to +5dBm | RX Power | -26 to -1dBm |
| Receiver Sensitivity | <-26dBm | Receiver Overload | -1dBm |
| Operating Temperature Range | 0 to 70°C | Protocols | IEEE 802.3ae, SFP+ MSA, SFF-8431, SFF-8472, CPRI |
The LINK-PP LS-BL27331G-80C 1G BiDi SFP cuts fiber use while ensuring reliable Gigabit performance for long-distance links. Its bidirectional design (1270nm-TX/1330nm-RX) enables two-way transmission over a single fiber, reaching up to 80km on standard single-mode fiber. Featuring a simplex LC connector, DOM monitoring, and a 1.25 Gbps data rate, it delivers cleaner cabling, easier deployment, and higher efficiency for campus, metro-edge, and inter-building applications.
The BiDi WDM architecture of the LINK-PP LS-BL27331G-80C module allows transmit and receive traffic to travel in opposite directions on a single strand of fiber. This results in fewer fibers, less cable congestion, and more room for future expansion in demanding network environments.
With a 1.25 Gbps data rate, the LINK-PP LS-BL27331G-80C BiDi module is a practical fit for networks that need stable Gigabit connectivity over long distances. It offers a straightforward way to extend optical links without increasing fiber count or complicating the physical layer design.
The LINK-PP LS-BL27331G-80C 1G BiDi SFP module transmits at 1270nm and receives at 1330nm, making it suitable for paired BiDi deployments with complementary wavelengths at each link end. This arrangement enables efficient single-mode fiber communication and reliable signal separation.
With support for an 80 km reach, the LINK-PP LS-BL27331G-80C 1G BiDi transceiver is ideal for long-distance installations where standard short-reach optics are insufficient. It is well-suited for inter-building links, metro-edge networks, and other long-span applications requiring a compact, reliable optical module.
The simplex LC port keeps the installation neat and efficient by using just one fiber for bidirectional traffic. This design helps reduce cabling costs, simplify routing, and make patch panel management easier in space-conscious environments.
With real-time tracking of key parameters such as optical power, temperature, voltage, and bias current, the Digital Optical Monitoring (DOM) function helps preserve link health, identify issues early, and simplify proactive day-to-day maintenance.
Manufactured in accordance with ISO 9001 excellence standards and validated by CE, RoHS, and FCC compliance, every LINK-PP module guarantees high reliability and broad global acceptance.
The quality testing program inspects each unit thoroughly to ensure reliable operation across a range of deployment scenarios.
Certified manufacturing standards help guarantee strong performance and consistent network dependability.
Completely tested with LINK-PP networking equipment to assure seamless plug-and-play operation.
LINK-PP's exhaustive validation process guarantees high uptime and consistent performance. Browse the LINK-PP Test Support Center for more details.
Ensures the module meets wavelength specifications and optical transmission requirements.
Analyzes signal patterns for better waveform definition and reduced interference.
Confirms dependable transmission quality by minimizing signal errors.
Guarantees stable performance under both low and high temperature conditions.
Ready for immediate use, LINK-PP modules are shipped through a streamlined logistics network that emphasizes speed, security, and global reach.
Specialized anti-static materials help minimize ESD-related damage throughout transportation and warehousing.
Durable transport packaging adds an extra layer of defense to maintain product condition throughout shipment.
Efficient processing systems enable faster order preparation, packing, and shipment release.
A dependable international shipping network ensures reliable global product distribution.
The LINK-PP LS-BL27331G-80C 1G BiDi SFP delivers reliable long-reach BiDi connectivity for 1.25 Gbps optical systems, Gigabit Ethernet, and 1.063Gbps Fibre Channel, perfect for applications prioritizing fiber conservation, clean cabling, and dependable transmission.
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-BL27331G-80C 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 | 1270nm-TX/1330nm-RX | 1550nm-TX/1490nm-RX | 1550nm-TX/1490nm-RX | 1550nm-TX/1490nm-RX | 1550nm-TX/1490nm-RX | 1550nm-TX/1490nm-RX |
Connector | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC |
Cable Distance (Max) | 80km | 10km | 150km | 160km | 100km | 120km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
TX Power | 0 to +5dBm | 0 to +5dBm | 0 to +5dBm | 0 to +5dBm | 0 to +5dBm | 0 to +5dBm |
Receiver Sensitivity | -26 to -1dBm | -26 to -1dBm | -28 to -1dBm | -28 to -1dBm | -28 to -1dBm | -28 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 | DFB BiDi | DFB | DFB | DFB | DFB | DFB |
Receiver Type | PIN | PIN | APD | APD | PIN | APD |
Receiver Overload | -1dBm | |||||
Protocols | IEEE 802.3ae, SFP+ MSA, SFF-8431, SFF-8472, CPRI | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | SFP MSA、SFF-8472 | SFP MSA、SFF-8472 | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: Can I use this module for long-distance enterprise fiber links? By J***z on 2026-03-15
A: Yes. It's designed for commercial networking environments such as enterprise campuses, office buildings, ISP access networks, and data centers. The module supports 1.25Gbps Gigabit Ethernet transmission up to 80km over single-mode fiber and includes DOM diagnostics for convenient monitoring. By admin on 2026-03-16
Q: Does the module support DOM or DDM monitoring? By D***t on 2025-12-25
A: Yes. Digital Optical Monitoring is supported, allowing you to monitor transmit power, receive power, temperature, voltage, and laser bias current from supported switches. By admin on 2025-12-25
Q: Can I use this module over one fiber instead of two? By N***s on 2024-10-01
A: Yes. This is a BiDi optical transceiver that transmits at 1270nm and receives at 1330nm through a single LC simplex connection on single-mode fiber. It must be paired with the complementary 1330nm TX / 1270nm RX module. By admin on 2024-10-01
Q: Is this module compatible with Cisco Catalyst and other OEM switches? By P***n on 2024-03-09
A: Yes. It is designed for broad OEM compatibility and is commonly deployed in Cisco-compatible environments as well as many other major switch brands. Always verify your switch model and coding requirements before ordering. By admin on 2024-03-09
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