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The LINK-PP LS-BL49551G-A0C 1G BiDi SFP transceiver is a high-performance optical module that enables reliable long-distance data transmission. It supports 1.25 Gbps over single-mode fiber for distances of up to 100 km, with transmit and receive wavelengths of 1490nm and 1550nm respectively.
| LINK-PP Part Number | LS-BL49551G-A0C | Vendor Name | LINK-PP |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 1490nm-TX/1550nm-RX | Max Cable Distance | 100km |
| Connector | Simplex LC | Media | SMF |
| Transmitter Type | DFB BiDi | Receiver Type |
PIN |
| TX Power | 0 to +5dBm | RX Power | -28 to -1dBm |
| Receiver Sensitivity | <-28dBm | Receiver Overload | -1dBm |
| Operating Temperature Range | 0 to 70°C | Protocols |
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
The LINK-PP LS-BL49551G-A0C 1G BiDi SFP module provides reliable, plug-and-play performance at speeds of up to 1.25 Gbps over distances of up to 100 km. It features a high-quality DFB laser, a sensitive PIN/TIA receiver, a simplex LC interface, and integrated digital optical monitoring (DOM). Its BiDi technology enables full-duplex communication over a single fiber, reducing cabling complexity and infrastructure costs.
With precisely matched wavelengths for full-duplex over a single fiber, the LINK-PP LS-BL49551G-A0C 1G BiDi module maximizes fiber utilization and provides cost-effective network expansion without additional fiber.
With a transmission rate of 1.25 Gbps, there is ample bandwidth for Gigabit Ethernet and many legacy applications.
The optimized pairing of wavelengths at 1490nm for transmission and 1550nm for reception enables efficient bidirectional communication over a single fiber, reducing interference and maintaining strong signal integrity for long-distance deployments.
Supporting transmission up to 100 km over standard single-mode fiber, the LINK-PP LS-BL49551G-A0C module maintains reliable signal quality and low error rates across extended links.
The LINK-PP LS-BL49551G-A0C module’s simplex LC connector enables bidirectional transmission over a single fiber, streamlining network design and significantly cutting down on fiber and installation costs.
With built-in DOM support, the LINK-PP LS-BL49551G-A0C BiDi SFP module provides real-time insight into key operating conditions. Temperature, voltage, and transmit/receive optical power can be monitored for easier maintenance and faster fault diagnosis.
Every LINK-PP module is designed in accordance with ISO 9001 quality standards and validated through CE, RoHS, and FCC compliance, ensuring reliable operation and consistent quality.
To guarantee dependable operation, every module is put through extensive testing for optical performance, environmental resilience, and thermal stability.
LINK-PP maintains compliance with ISO 9001, CE, RoHS, and FCC requirements to support long-term reliability and standards-aligned manufacturing.
Each unit is individually verified on LINK-PP platforms to ensure seamless integration and steady performance throughout deployment.
LINK-PP uses a comprehensive validation process to assure high performance and dependability. For further information, go to the LINK-PP Test Support Center.
Delivers exact optical output aligned with high-performance standards.
Ensures clean, stable waveforms for reliable transmission.
Maintains high data accuracy with minimal transmission errors.
Ensures stable functionality across varying environmental conditions.
Each LINK-PP module is meticulously packed, shielded against transit risks, and shipped globally through established logistics providers.
Electrostatic-protected packaging shields components from static interference.
Protective cushioning ensures safe transit.
Fast and efficient order processing reduces lead times.
Comprehensive logistics solutions support global distribution.
Typically deployed as matched BiDi pairs with complementary wavelengths on a single fiber, the LINK-PP LS-BL49551G-A0C 1G BiDi SFP module connects switches, routers, or media converters for long-distance Gigabit communication while conserving fiber resources in telecom, ISP, metro, remote monitoring, and enterprise WAN applications.
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-BL49551G-A0C 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/1550nm-RX | 1490nm-TX/1550nm-RX | 1490nm-TX/1550nm-RX | 1490nm-TX/1550nm-RX | 1490nm-TX/1550nm-RX | 1490nm-TX/1550nm-RX |
Connector | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC |
Cable Distance (Max) | 100km | 150km | 160km | 120km | 80km | 10km |
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 | -9 to 0dBm |
Receiver Sensitivity | -28 to -1dBm | -28 to -1dBm | -28 to -1dBm | -28 to -1dBm | -26 to -1dBm | -23dBm |
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 | DFP BiDi |
Receiver Type | PIN | APD | TIA+APD | APD | PIN | |
Receiver Overload | -1dBm | -1dBm | ||||
Protocols | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | SFP MSA、SFF-8472 | 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: Will it work with OEM-compatible switches from different vendors? By E***s on 2026-04-24
A: Yes. The module is designed for broad OEM compatibility. It has been widely deployed on various mainstream networking platforms. If you need a specific coding option, LINK-PP can usually provide compatible programming before shipment. By admin on 2026-04-24
Q: Can this 1G BiDi SFP really support a full 100km optical link? By S***t on 2026-04-01
A: Yes. This module is designed for Gigabit Ethernet transmission over single-mode fiber up to 100km, provided the fiber quality and overall optical link budget meet the required specifications. By admin on 2026-04-01
Q: What module should I use on the opposite end of the fiber? By E***r on 2025-07-16
A: This model transmits at 1490nm and receives at 1550nm. It must be paired with the complementary BiDi transceiver that transmits at 1550nm and receives at 1490nm (such as LS-BL55491G-A0C)to establish a working fiber link. By admin on 2025-07-17
Q: Does this module support DOM or DDM monitoring? By B***h on 2025-06-08
A: Yes. It supports Digital Optical Monitoring (DOM/DDM), allowing you to monitor transmit power, receive power, temperature, voltage, and laser bias current in real time. By admin on 2025-06-08
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